Latest Pipes, Pumps and Valves Africa Jan/Feb 2021 by Lifting Africa

JAN/FEB 2021

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If If its its not notINVAL, INVAL,it’s it’snot notInvincible Invincible

Tips for sustainable water management

We offer valves for precision processes - and demanding applications Our valves fulfill the highest of standards and are designed for many years of safe and reliable operation. Our service specialists regularly check, monitor and maintain all relevant system components - depending on what has been agreed. Our modular framework agreements offer you individual service and spare parts concepts. And we even go one step further. We additionally check systems for efficiency in order to reduce operating costs and increase productivity. For example, with the SES System Efficiency Service.

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CONTENT COVER STORY Summiting the pandemic peak

BEARINGS Lubrication and fluid seal damage

PIPES Tips for sustainable water management in construction

SAPPMA’s pipe survey shows decline in infrastructure investment The devastating consequences of not properly managing residential wastewater

10 12

INDUSTRY NEWS Lincoln Lubrication SA develops first international qualification

Going green with water

VALVES Ithuba Valves & Industrial Supplies earned a fine reputation Apex valves South Africa

18 19

All sleeves and parts are interchangeable

All about Valve Coefficient

PUMPS BMG’s SEIM spindle screw pumps efficiently handle a wide range of liquids

Regular desilting vital for mine ponds Hilton Hotel upgrades with Grundfos pump set

26 27

Vert Energy to supply and support Yanmar industrial engines and power products in Southern Africa

Wilo Rexa SOLID-Q with Nexos Intelligence for a smart sewage pump station

Troubleshooting a pump all you need to know

Pump intelligence to your system

Gear Pump Manufacturing has solid expertise

The digital sensor age is here

What is dissolution testing?

Werner pumps launches 6-inch 4-cylinder suction trailer

BUYERS GUIDE

Disclaimer

Opinions in this Publication are those of the authors and do not necessarily reflect those of this publication, its editorial board, its editor or its Publishers SAPMA or VAMCOSA The mention of specific products in articles and advertisements does not imply that they are endorsed or recommended by this Publication or its publishers in preference to others of a similar nature, which are not mentioned or advertised. Reliance on any information contained in this journal is at your own risk. While every effort is made to ensure the accuracy of editorial board makes no representations or warranties, express or implied, as to the correctness or suitability contained and/or the products advertised in this publication. The Publisher shall not be liable for any damages or loss, howsoever arising, incurred by readers of this publication or any other person/s. The Publisher disclaims all responsibility and liability for any damages, includes pure economic loss and any consequential damages, resulting from the use of services or products advertised in this publication. Readers of this publication indemnify and hold harmless the publisher, its officers, employees, and servants for any demand action, application or other proceedings made by any third party and arising out or in connection with the use of any services and/or products or the reliance on any information contained in this publication.

On the cover Invincible Valves, +27 (0) 11 822 1777, enquiries@invalve.co.za, www.invalve.co.za

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Managing Editor: Surita Marx Tel: +27 (0) 87 153-1217 Cell: +27 (0) 83 281-5761 Email: info@pumpsandvalves.co.za Web: www.pumpsandvalves.co.za Sales: Elma Heuer Email: Elma@pumpsandvalves.co.za Production Manager: Xane Roestroff Email: adverts@pumpsandvalves.co.za

Advertisers Air & Vacuum Technologies 9 AMD Rotolok 29 bauma Conexpo Africa 37,IBC Billfinger 13 Bray 15 C.R.I Fluid Systems 41 Cyclone Industries 17 Fluid Power Valve Technologies 21 IFAT Africa 39 Impellers CC 27 Industrial Valve Summit 33 Integrated Pump Rental 11 Integrated Pump Technology OBC Invincible valves OFC KSB IFC Macsteel Fluid Control 25 Pamodzi Unique 7 Sam Engineering 19

Pipes, Pumps and Valves Africa - Jan/Feb 2021

COVER STORY

Summiting the pandemic peak Within months, the spread around the globe of the effects of the COVID-19 pandemic triggered the worst health, financial, social and emotional emergency in a century. It has sparked an economic crisis, not seen since the Great Depression of the 1930’s. More than 113 million people have been reported to be infected with the virus, more than 2,5 million people have since died and millions of dollars have been pumped into the world economy to protect lives and livelihoods. We are now also seeing different strands of this dreaded virus. In the face of this challenge, how have we all fared? It seems that what has taken businesses decades to build, could quite easily unravel through the months and years in front of us. With so many ‘firsts’ for most people when dealing with a challenge such as the pandemic, the obstacles have seemed insurmountable. The immediate response to the pandemic has been unprecedented in scale and scope. As countries move out of lockdown, rehabilitation will be critical to protect many jobs. Reciprocity, with everyone contributing to rehabilitation with a sense of responsibility, will also be key to the recovery. The COVID-19 crisis has exposed gaps in the labour market that must be closed up to boost resilience. Those that are in the low-income bracket, youth, self-employed and temporary workers are among the hardest hit by the crisis, and as a result, the burden of the pandemic has been

shouldered disproportionately by the most vulnerable. Countries around the world have taken major steps to deal with the crisis quickly and effectively. From a public health perspective, the primary objective has been to “flatten the curve” of the virus, contain the otherwise overwhelming pressure on hospitals and ultimately save millions of lives. Intervention was swift with many countries adopting drastic lockdown measures which resulted in an unprecedented shutdown of most non-essential activities. For the majority of the globe, this was a first-time experience. Lockdown became a new turn of phrase that affected the very way that the thinking behind everyday chores such as buying groceries, cleaning one’s house, using an ATM, eating in restaurants, visiting medical facilities such as dentists was approached. The big questions being asked daily are how have we all coped, what have we changed in order to survive, what will be changed for the future and how do we all adapt to the ‘new normal’ that will filter into every day business and personal life? 2020 saw Invincible Valve steadfastly going with the zero-tolerance approach to COVID-19, the pandemic and lockdown restrictions as a whole. Management initiated a protocol that adapted according to the lockdown level, but ultimately each protocol is about the unmitigated safety of our staff, suppliers, and customers. With the ethos of ‘be a friend’, Invincible Valves has taken on a responsibility for each and every person that enters our premises, minimizing physical contact on all accounts and at most potential touch points. Screening and gathering information is our first priority, however along with that we implemented an education program to keep everyone informed and up to date with the latest information relating to the virus and the statistics. Self-care is probably the most important requirement to keep one safe, and when we talk about keeping our staff safe this extends to their family and close contacts, so we therefore chose to supply all our staff with excessive amounts of safety equipment that they could take home to keep their environment safe. Acknowledging that Invincible Valves as a company could not control every aspect of our employees daily life made us realize that it was inevitable that indeed some would become infected. Therefore, we chose to engage with all staff and communicated our desire to support them no matter what, and reassured them that they would not be penalized if they tested positive.

Keeping a company financially sound during this turbulent time took its toll. Invincible Valves made some tough calls. • Instead of paying out profit share bonuses we chose to pay our staff throughout lockdown in an effort to minimize their financial stress knowing that the virus itself would create stress on many other levels. • We also engaged with the groups through different media platforms to keep everyone engaged and positive through this trying time of lockdown. For those with comorbidities we extended a work from home policy which will remain in effect throughout the pandemic. In the nature of continuing with our good business we decided to remain true to our values and we continued a form of payment because ultimately “we are all in this together”. • We have been transparent with everyone employed by and associated with Invincible Valves: we have discouraged long distance travel, discouraged use of public transport, discouraged social events

enquiries@invalve.co.za +27 11 822 1777 invalve.co.za

To date we have been fortunate in the overall high standard of health and work ethic from all Invincible Valves employees. We have had very few positive COVID-19 cases and in most instances identified the risk upon arrival and been able to contain it effectively. Our staff, their families and acquaintances are continuously being empowered with updates, educational material, and personal protection equipment. Who would have ever thought we could operate our business in this way? That a health scare could change the very fabric of how a business is run. The pandemic has opened our minds to alternative ways of operating, which in turn could lead to massive savings, less costs to company and more engaged staff. Invincible Valves is a business that is labour intensive and so when lockdown restrictions were implemented we initially believed that it was not possible to function at the level we had to that point. Interestingly enough social distancing is easier than you expect when you apply your mind to the positive impact that can be created without isolating people to the extent that they start feeling like they don’t belong.

If its not INVAL, it’s not Invincible

Invincible Valves changed operational routines, have staggered breaks and an outside canteen area. Our management are deliberately engaged with staff members and strive to understand their circumstances to be able to pick signs of distress, depression and workrelated anxiety. From a personal and business perspective, the lockdown experience caused by COVID-19 has been a surprisingly positive one for Invincible Valves creating many unforeseen and unexpected opportunities along the way. Our management team remains engaged, working together and taking responsibility for all protocols and decisions made. In turn, the negative impact on our business is far less brutal than anticipated and we have chosen to embrace the impact (and the results) that have so far proven effective.

TRUST IS WHAT MAKES OUR NAME OUR PROMISE.

Lubrication and fluid seal damage

BEARINGS

Seal failure or leakage can be catastrophic, causing equipment damage and ultimately failure. It’s important to understand lubrication and seal compatibility to avoid these issues. Callum Ford, National Marketing Manager at Lubrication Engineers (LE) South Africa, explains that different seals have different tolerances in terms of temperature and pressure, and the different materials are compatible with different applications. It’s critical to ensure you are not using a lubricant that is incompatible with your seal. “We normally divide fluid seals into two main classes: static seals and dynamic seals,” he says. Static seals include gaskets, o-ring joints, packed joints, welded joints, and similar devices used to seal static connections or openings with little or no relative motion between mating parts. A dynamic seal, on the other hand, is any device used to restrict the flow of fluid through an aperture closed by relatively moving surfaces, although certain dynamic seals include static sealing elements in their design. Ford says seals are also frequently classified as contact seals or clearance seals. “Some seal elements may operate as clearance seals under certain conditions and as contact seals under others,” he says. “In fact, when we say ‘seal’, we might even be referring to the whole sealing system as opposed to a single device.” While seal components and gland ring parts for noncorrosive fluids (such as gasoline, hydrocarbons and oils) are usually made from ferritic stainless steel, applications that require moderate corrosion resistance (for example those in environments such as water, seawater, diluted acids, fatty acids and alkalis), austenitic stainless steels are widely used. “For highly corrosive environments, such as strong mineral acids and strong alkalis, seals tend to be

Pipes, Pumps and Valves Africa - Jan/Feb 2021

made from nickel-copper base materials,” says Ford. “We find that when people choose to change the lubricant, they typically focus on minimising friction and wear in the gears and bearings, but they might forget to consider how the change may affect the seal.” The wrong lubricant choice can result in several problems, including: • Chemical attack of radial shaft seals, causing blistering, filler erosion and breakdown of polymers. • Lubricant deposit formation around the sealing lip, which later causes seal lip wear. • Carbon deposits, caused by thermal overloading of the lubricant, which can tear the sealing edge or create holes. • Rapid wear, resulting in lower equipment lifespan. “LE South Africa has developed a lubrication and seal compatibility chart to assist our customers in choosing the right lubricant for their particular seals,” says Ford. “We are also able to assist in matching a lubricant to a particular application, operating environment and seal type. If you’re unsure about what you need, I would highly recommend speaking to a qualified tribologist (tribology is the science and engineering of interacting surfaces in relative motion, including lubrication). They will be able to ensure your lubrication does what it needs and helps you protect your machinery,” he concludes. Lubrication Engineers, +27 (0) 11 464 1735, info@lubricationengineers.co.za, www.lubricationengineers.co.za

Tips for sustainable water management in construction Water damage has superseded fire when it comes to risks on construction sites. This won’t come as a surprise to many construction professionals: water can cause immense damage and do so slowly over a long time or in one flash flood.

PIPES

Water problems can occur in multiple places at once, and damage can be widespread. Even though insurance can mitigate some of those risks, water damage can create considerable and unexpected costs on a project. “The problem with water for construction sites is how it can appear in different ways,” explains Chetan Mistry, Strategy and Marketing Manager for Xylem Africa. “It can come from groundwater or rain, or a burst pipe on the site. It can cause a big flood or small leaks start causing unseen damage. Depending on the damage, it can take additional time and resources to dry and repair such areas and remove raw materials - usually with the help of suitable professionals.” Water damage occurs in two general areas: water intrusion and water escape. Intrusion is external water entering the site, such as rising groundwater or rain. Water escape comes from pipes or other equipment that transport water around the site. Four areas of focus There are multiple ways water can access a site, summarised into four areas. Addressing these places with the appropriate use of inspection, equipment and technology can help prevent damage, identify the source of a problem, and prevent further damage. ● Groundwater: This is water from the surrounding

Pipes, Pumps and Valves Africa - Jan/Feb 2021

area. It could be located underground or result from nearby catchments. These concerns are most prevalent in the early stages of a project and can be mitigated with thorough inspections of the site - particularly foundation locations. You certainly don’t want to breach a water table underneath. Other than inspections, a sound stormwater drainage system can redirect and remove excess groundwater. It’s also prudent to use equipment such as Flygt dewatering pumps or mobile Godwin dri-prime pumps to dewater sites even if no-one is on-site. ● Rain: Rain is the element projects have the least control over: if a storm is coming, there is nothing you can do to stop it. But a site can be prepared to manage any water damage that might occur. If possible, temporary roofs should be built over areas such as elevator shafts or stairwells. If these cannot be roofed, surround then with dykes to prevent water from flooding down them. Ditto for areas where the building envelope isn’t complete, such as crane mounting points. It’s good practice to partition sites to water can collect in certain areas, then use mobile dri-pumps such as from Godwin to drain these temporary dams. Leak detectors, such as from the Pure Technologies brand, can help discover weak spots in new pipes. ● Piping and fixtures: Even though rain and groundwater can cause a lot of damage, pipes and fixtures are the riskiest. They can produce many small leaks or unseen leaks, and they typically cause problems when the

PIPES

construction project is at an advanced stage with many elements and raw materials that can be damaged. Fixtures and pipe connections should be regularly inspected, especially if crimping is used instead of soldering to affix pipes. Brands such as Pure Technologies and Visenti offer several hardware and software products to test if pipes and joins are sufficient. Other detection systems, including Sensus flow meters, can alert you on whether there is too little or too much water in a particular family of pipes. These help alert to problems early, helping mitigate the damage. ● Drains: Drains are often overlooked because they don’t seem to pose a significant risk. After all, aren’t they meant to accommodate water and reduce problems? Yes, providing they are not clogged. But often on construction sites, detritus can fall down open drains, causing blockages just when you have water problems that need urgent draining. This area, though, has a very low-tech and inexpensive answer: place grills over drain openings. These steps should be complemented with regular inspections and a water-aware culture on the site, adds Chetan Mistry:

“By combining technology and awareness, you can avoid most water problems and greatly reduce the damage in case something does go wrong. It’s important to train personnel to identify signs of potential water problems, such as moisture damage or low pressure on pipes. You should have regular inspections of the site, checking pipe connections, as well as the condition of equipment such as pump generators and warning sensors.” Water damage can be very harmful to a project’s budgets. The damage can be widespread, difficult to contain, and ongoing. Even a minor leak can result in long-term damage that will sully reputations and leave customers very unhappy. In contrast, buying or renting water management equipment represent a fraction of those costs. Investing in sustainable water management today can save you enormously in excess payments and brand damage Xylem, +27 (0) 11 966 9311, Chetan.Mistry@Xyleminc.com www.xylem.com

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Pipes, Pumps and Valves Africa - Jan/Feb 2021

SAPPMA’s pipe survey shows decline in infrastructure investment

PIPES PIPES

The Southern African Plastic Pipe Manufacturers Association (SAPPMA) has released the findings of a qualitative and quantitative survey into the plastic pipe market that was conducted earlier this year by LHA Management Consultants. This was the third quantitative survey they conducted for the plastic pipes standards body, following on previous studies in 2009, 2012 and 2017 to assess the size of the plastic pipes market vis-à-vis pipes made from alternative materials such as concrete or galvanised steel. Highlights of Quantitative Survey Results According to Jan Venter, CEO of SAPPMA, it was important for them to gauge how the SAPPMA brand is perceived in the market place, as well as whether decision makers are aware of SAPPMA mission and activities. In order to do this, LHA conducted interviews with municipalities, contractors, consultants and other decision makers around South Africa. “We wanted to hear from the industry if our training, communication and efforts to maintain standards are making an impact on the ground. We were also eager to find out from them if there any gaps exist and what we could do to offer more technical support or information to

Pipes, Pumps and Valves Africa - Jan/Feb 2021

the decisionmakers,” Venter said. 80% of the respondents indicated that they were very familiar with SAPPMA and its role in the plastic pipe industry, with 20 % stating they were only vaguely familiar. SAPPMA scored high for delivering technical support. (84 %), professionalism (82 %), neutrality (80 %) and Quality Assurance (80 %). 54 % of the respondents indicated that they give preference to (or only use) suppliers that are accredited members of SAPPMA, and/or carry the SAPPMA logo, albeit with some exceptions. 33 % said confirmed that they use SAPPMA members exclusively. Highlights of Qualitative Survey Results Based on the latest available data, PVC pipes continue to enjoy the biggest share of the local market, with approximately 78,000 tons currently in use (72 % pressure and 28 % non-pressure). 48,000 tons of HDPE pipes are used in SA (84 % pressure, 4 % non-pressure and 12% telecoms), followed by 220,000

tons of concrete pipe (78 % stormwater and 22 % sewer). What became clear from the research, was that significantly fewer funds have been invested in infrastructure and building projects over the past six years – causing the pipe market to shrink by an alarming 15% since 2014. Although South Africa recorded average GDP growth of 0.8 % per annum during the same period, the amount of money that was invested in building and construction projects as a percentage of GDP had declined sharply.

We are very concerned that the pipe infrastructure provision is declining on a per capita basis. This is a clear indication that the taxpayer’s money is not being spent where it is supposed to go - despite the promises made by politicians," Venter reported. Looking ahead Valuable and insightful feedback was received from the respondents, which SAPPMA will use to set its agenda and priorities for the next few years. “It is clear that there is a need for ongoing training, communication and skills transfer in the industry Our annual PIPES conferences, quality workshops and technical manual play an important role in this regard. We will continue educating engineers and other decision makers about pipe selection, pipes standards and pipeline design through these platforms, but will also be offering

Recognising the importance of educating future engineers with practical and relevant information about plastic pipe materials, SAPPMA has begun engaging with the Department of Civil Engineering of the University of Pretoria to include basic technical info into the curriculum for the third-year students. Unfortunately, Venter said he was not too optimistic about the possibility of a quick recovery for his industry. “We know from experience that implementation and roll-out take long.” Even if the decisions are taken and approved today to invest in new infrastructure or to upgrade the existing pipe networks, it will still take several months before we start seeing the impact and results. What is more concerning to us, is that we have also not yet calculated the full impact of the COVID-19 pandemic on the country’s economy, infrastructure spend and therefore also on the pipe industry.

PIPES PIPES

“Reliable infrastructure is desperately needed in our country to ensure the supply of clean drinking water, uninterrupted sewage services and the provision of electricity, telecommunication and gas services to communities around South Africa.

roadshows to the various provinces once the COVID-19 pandemic is over and life has returned to normal,” Venter said.

Optimistic expectations are that South Africa's GDP will only recover to 2019 levels by 2023. Rapid recovery. www.sappma.co.za/images/documents/Press/SAPPMA_ RESULTS_OF_PIPE_SURVEY_NOV2020.pdf

SAPPMA, +27 (0) 11 314 4021, admin@sappma.co.za, www.sappma.co.za

Pipes, Pumps and Valves Africa - Jan/Feb 2021

The devastating consequences of not properly managing residential wastewater Two years ago, the National Construction Authority said more than 70 percent of buildings in Nairobi were unsafe for occupation. A rough estimate shows this is about three out of every four buildings.

PIPES

The authority depicted a worrying situation regarding the safety of the buildings in the city and its environs. The authority attributed this to the collapse of some buildings, including poor workmanship, lack of adherence to construction regulations, lack of professional input and use of poor quality construction materials. But there remains one area of safety rarely looked at in some buildings in Nairobi and other parts of the country, the drainage and sanitation systems. The last decade has seen a boom in private property development in upmarket Nairobi and other parts of the town, but a keen observer will realise that little attention is being placed on how the sewerage system has been set up, or where the sewage ends up. The home is important for psychosocial reasons as well as its protection against the elements. It is the environment in which most people spend the majority of

their time. But it can also be the source of a wide range of hazards (physical, chemical, biological). Many people have contracted diseases in the homes, but few realise these are as a result of poor drainage and sanitation systems in the places they live. The lack of proper sewer infrastructure outside of central urban areas means that vast quantities of wastewater are simply not treated. And this, in turn, results in sanitation waste being abundant in urban communities – with a devastating impact on health, dignity, education and economic development. Sewage is wastewater which contains human excreta (faeces and urine), laundry waste, and often the kitchen, bathing and other forms of wastewater too. It is highly pathogenic, meaning that it contains many diseasecausing organisms. In Kenyan capital Nairobi, only 40% is connected to a sewerage system and as the city has grown, more poor urban dwellers have been pushed into low-income settlements, where there is little or no water or sanitation. Most sewerage projects have focused on the ‘large investment items’ - trunk sewers and sewage treatment facilities - with scant attention, plans or investment in tertiary street drains and sewers or the house connections to collect the wastewater from homes. Unfortunately due to the use of poor quality materials and installation allow vast amounts of stormwater with hardly any ‘real’ sewage flowing into the treatment plants Essentially what happens is that the sewage treatment plants receive little more than ‘dirty stormwater’ – with negligible benefits to public health and the environment and high processing costs to the water companies. The household faecal wastes remain mostly untouched and uncollected – under or nearby to the home or local drains and waterways – when they should have been connected and removed by the new sewers and delivered to the plants for safe treatment and disposal. In some parts of the country, the challenge is that many residents’ septic tanks are connected directly to open drains – so that all their waste flows directly into the environment, often without residents even knowing. In other areas, residents pay for their waste to be collected by a vacuum tank operator which then simply dumps the waste into a river a few miles away. The problem is shifted from the house, but very much remains in the environment. It is therefore important that policies, strategies, plans, designs, and financing mechanisms always need to include the ‘last mile connecting infrastructure’ so that households connect to the sewers

Pipes, Pumps and Valves Africa - Jan/Feb 2021

SDG 6.3 is vitally important because poor sanitation waste management in urban areas has a catastrophic impact on the health of urban dwellers. It affects the whole city – even richer residents are not immune, for example when they eat vegetables irrigated by water mixed with sewage But, for the poorer residents, the risks are far higher. They will live in communities where harmful bacteria are rife. They might have to wash their clothes in dirty, polluted water. They will almost certainly be reliant on water from damaged pipes, increasing the risk of contamination as they drink (especially where depressurisation from water

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rationing has weakened the system). Through various International Development Association (IDA) investments in the Nairobi City Water and Sewerage Company (NCWSC), Athi Water Services Board (AWSB) and Kenya Informal Settlements Improvement Project (KISIP), the World Bank has had a long-established involvement in helping increase water access and sanitation services in Kenya – but there is still much more work to be done. It is therefore important that while urban regions continue to grow, attention is also placed on building a sustainable sewerage system.

PIPES

lve

and transport it to plants for treatment. The world is significantly off track for all of Sustainable Development Goal 6, and poor management of sanitation waste has a particular impact on SDG 6.3:

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Pipes, Pumps and Valves Africa - Jan/Feb 2021

INDUSTRY NEWS

Lincoln Lubrication SA develops first international qualification Lincoln Lubrication SA, a SKF Group company, has developed the first nationally registered qualification for Lubrication Equipment Mechanic Artisans. This new Occupational qualification is now available to any employee with experience in the automated lubrication field. Successful candidates will be certified as Lubrication Equipment Mechanic Artisans and will be awarded the nationally recognised Artisan Certificate by the Quality Council of Trades and Occupation (QCTO). This landmark achievement is the result of eight years of hard work and dedication by the Technical Working Group, a team of forward-thinking stakeholders, spearheaded by Human Resource Professional, Michael Mogogabe, Skills Development Provider (SDP) & Trade Test Centre (TTC) Training Management provider to Lincoln Lubrication SA. Members of the Technical Working Group include representatives from companies that are involved in the lubrication field as well as training providers who were appointed to develop the trade test tasks and national assessment instruments. “Membership also includes the Community of Experts who was responsible for the development of the Lubrication Equipment Mechanic qualification and curriculum,” explains Mogogabe, adding that the appointment of these members was facilitated by the Department of Higher Education and Training under Artisan Development. “While the journey in developing this qualification was never an easy one, the sense of achievement following the completion of the trade testing overshadows all challenges encountered throughout the years,” notes Mogogabe who,

Pipes, Pumps and Valves Africa - Jan/Feb 2021

together with William Van Rooyen and Roy Grobler, are the first candidates to have successfully completed their assessment and have been declared competent by the National Artisan Moderation Body (NAMB). The development of the qualification as well as the curriculum content commenced in 2012 and was registered with the South African Qualifications Authority (SAQA) in 2015. The process of developing the trade test tasks and National Assessment Instruments started one year later and was concluded in early 2020. According to Mogogabe, the entire assessment process as well as the development of all the Assessment Instruments was under the strict guidance and authority of NAMB officials which is an Advanced Qualification Partner for trade qualifications. “We also appreciate the support that was provided by MerSETA who kindly assisted us in getting the lubrication field occupation registered in the Organising Framework of Occupations (OFO) and recognised as a Trade Qualification by NAMB,” notes Mogogabe. All big machinery and equipment imported into South Africa by the mining, printing, food & beverage, agriculture, steel, wind turbine, cement and transport sectors are equipped with a standard automated lubrication system. “It is the responsibility of the qualified Lubrication Equipment Mechanic Artisan to repair, maintain, install and commission these lubrication systems so the

development of this first-of-its-kind artisan qualification which gives recognition to this essential industry is indeed a milestone,” says Mogogabe.

Qualified artisans are also in the advantageous position of being able to enter occupations such as Lubrication Analyses and Lubrication Condition Monitoring. They further have the opportunity to enrol in courses provided by the International Council of Machinery Lubrication (ICML) such as Machine Lubricant Analyst and Machinery Lubrication Technician. The two-day trade test is conducted at Lincoln Lubrication’s 400m² Test Centre which comprises both practical and theoretical areas. The Centre is equipped with all lubrication systems training panels fitted with specialised lubrication tools and equipment, an electrical testing training panel, work benches, drilling and grinding machinery as well as hydraulic, electrical, and pneumatic lubrication equipment and pumps. The curriculum includes the following key content: Hand skills, lubrication theory, and lubrication systems and equipment repair, maintenance, installation and commissioning. Single line, two line, progressive and spray oil/grease lubrication systems as well as oil circulation systems are applied in the course. ”We have capacity to offer pre-assessments and training facilitation for up to twelve candidates at any given time,”

“Throughout the year we offer ARPL (Artisan Recognition of Prior Learning) pre-assessment and training for people with experience in the lubrication field to have a qualification. We are able to tailor the training session to meet each person’s needs and we welcome all enquiries.” He adds that Lubrication Equipment and Systems specialised training is also offered to candidates who need in-depth specialised knowledge and skills. During the qualification and curriculum development phase, a global comparability study was conducted with similar qualifications and industry practices that are available internationally. “It was found that South Africa is the only country in the world that currently has this qualification. Notwithstanding advanced practices in various countries, there is no qualification comparable to this one. As the Lubrication Equipment Mechanic Artisan qualification is the first in the world, we are confident that it can be applied and will be relevant anywhere internationally.”

INDUSTRY NEWS

Another area of pride for Mogogabe and his team is that this portable qualification achieves the objective of lifelong learning as it offers employees involved in the lubrication field the opportunity to study further as well as to articulate into other registered qualifications.

says Mogogabe.

Mogogabe says that this momentous achievement cannot be fully celebrated without acknowledging all those who shared and contributed to the visionary objective of making such a national qualification possible. “I am privileged to acknowledge each and every person who has contributed to this qualification and I extend a sincere thank you for their support, dedication and passion.” SKF Group, +27 (0) 11 821 3500, sales.za@skf.com, www.skf.com

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Pipes, Pumps and Valves Africa - Jan/Feb 2021

Going green with water INDUSTRY NEWS

The equitable and sustainable use and management of water resources can support poverty alleviation, socio-economic development, regional cooperation, and the environment. This is the 2025 vision that was proposed by the UN, Economic Commission for Africa, African Union and African Development Bank. Dubbed the Water Vision for Africa, it’s a framework for helping Africans access potable and other water sources that are reliable, and sustainable. Often summarised as going green, such concepts are about much more than the environment. It’s about survival. Africa, particularly the sub-Saharan region, is urbanising faster than any other part of the world. This trend is good for growth, but also creates a hidden problem: urban populations are more likely to treat water as a neverending commodity. Waste levels are very high, and centralised water management systems struggle to coordinate and prioritise water issues. Sub-Saharan Africa is one of the most waterscarce regions in the world, worsened by shortfalls in smart water-related practices and development. By 2025, 25 of the estimated water-short countries of the world will be African. Factor in water’s importance for agriculture, industry and many other economically-productive sectors, and it’s one of Africa’s biggest weaknesses. Fortunately, there is much we can do, explains Chetan Mistry, Strategy and Marketing Manager at Xylem Inc, “There isn’t a magic wand or silver bullet to fix water problems. But there are many individual actions that, when they combine, will change the picture drastically. These are affordable and often easily deployable

Pipes, Pumps and Valves Africa - Jan/Feb 2021

interventions. Usually, we find people just aren’t aware of what can be done about water situations.” Two specific areas can address water issues. The first focuses on how we approach these issues. It’s clear that a top-down, wholly centralised approach to water management is insufficient, and we need a broader inclusive culture to tackle different situations. The Water Vision for Africa recommends the following changes: • Openness and transparency in decision-making processes • Ability to generate and receive knowledge and information • Cooperation and teamwork by all countries in the region to achieve common and mutually beneficial objectives • Readiness to take tough decisions on the future direction and course of action consistent with the aspirations in the shared Water Vision • Proper appreciation at all times of “where we are”, “where we want to be”, and “how to get there” The second area regards specific interventions that will help empower different stakeholders within Africa: Water continuity plans - African cities and countries generally lack water continuity plans, perhaps because they don’t seem necessary. But what happened in Cape Town, South Africa, the first modern major city to run out of water supplies, is a reminder that we cannot take water for granted. Sovereign states, municipalities and even individual businesses should develop water continuity plans with the cooperation of service providers such as

Xylem, that can apply best practices and experiences. Improve agricultural practices - Most of the interventions here are broadly-focused. But agriculture is such a prolific consumer of freshwater - up to 70% of supplies - that it deserves special attention.

But maintenance must also happen across major infrastructure, using modern technologies such as Xylem Smartball to spot even micro leaks acoustically. Above all, maintenance and monitoring is a choice: many of us don’t even notice if our water consumption goes up, yet that is a perfect sign of leak problems. Recycle water - Water capture and recycling have already been mentioned above, underscoring their necessity. In South Africa, for example, there is abundant rainfall - but it is spread unevenly, and catchment areas don’t serve the majority of the country. Nor do African countries take care of their aquifers, even though these resources could hold 100 times more volumes than groundwater. Rainwater harvesting, greywater recycling and aquifer rehabilitation are not common practices. Such systems are often easy to introduce, but we need more emphasis on them. Awareness - Africa’s biggest water challenge is perhaps that we take it for granted. This isn’t the case in most rural communities, where people often have to walk many kilometres to get water. They appreciate it more, yet often are stuck in a poverty trap where they spend too much time on water collection. In urban areas, people are more prone to take water for granted: taps might be

closed, but leaks aren’t taken seriously. Companies and cities don’t have robust water conservation strategies. Most municipalities don’t even employ hydrologists. The answer is education: not just state-led campaigns, but also water strategies within companies. Water is a hidden risk: it doesn’t seem like a problem until something happens, such as a drought, at which point intervention comes too late. Everyone must work on being more water aware, through sensible and pragmatic strategies.

INDUSTRY NEWS

Strategies vary from improved irrigation using modern technologies, such as highly-efficient Flygt irrigation pumps, to broader use of water capturing and recycling. Agriculture is often the canary for water: if it does things efficiently and has a reliable water supply, that reflects an overall water-conscious society. Better maintenance & monitoring - Water wastage is an enormous yet very unseen and unacknowledged problem. Problems vary from leaks in infrastructure to poorly-maintained outlets. Numerous things that can be done here: aerators, dualflush toilets, and lower-volume cisterns are a few.

Africa is not doing well in terms of water conservation. The continent mostly missed the 2015 Millennium Development Goal milestone of reducing by half the proportion of the population without sustainable access to safe drinking water. This shortfall didn’t happen due to a lack of capacity or resources. Instead, we’re still too bullish about water’s future and believe that the taps will run forever. There are opportunities to turn the tide around: let’s take them! Xylem, +27 (0) 11 966 9311, Chetan.Mistry@Xyleminc.com www.xylem.com

CMY

Pipes, Pumps and Valves Africa - Jan/Feb 2021

Ithuba Valves & Industrial Supplies earned a fine reputation

VALVES

Ithuba Valves & Industrial Supplies cc was established in 2000 and shelved for some reasons, then commenced trading in August 2003 and we earned a fine reputation as a refurbishment company in the valve industry. This resulted in the successful completion of various large contracts, including phase one and two of the demothballing of Camden Power Station and Phase one of Grootvlei Power Station. In January 2006 Ithuba Valves acquired a manufacturing facility, as part of its strategy of becoming South Africa's first fully-black owned valve manufacturer. In December 2008 Ithuba Valves acquire designs, drawings and patterns of Metal Seated Wedge Gate valves from 500mm to 1700mm and for the Reflux Non Return valves Multi Door and Single Door, ranging from 500mm to 1500mm from a well known valve manufacture in South Africa. Ithuba Valves manufacture the above valves from 80mm to 3000mm. We have our own designs from 300mm to 450mm. Ithuba Valves has launched a new Butterfly valve which range from 1000mm to 2800mm (PHOENIX Butterfly Valve). Its features include a dish disk that reduces the weight of the valve by 20% and the valve is able to handle seven to ten litres of fluid a second. Mission Statement • Focuses on being a product leader in the Water Works.

Pipes, Pumps and Valves Africa - Jan/Feb 2021

• Passionate about manufacturing high quality products and on time delivery for our customers. • Educating and creating awareness about quality to all our employees. • We strive to satisfy our internal and external stakeholders. Vision Statement To be: Africa's leading Water Works valve manufacture, refurbishment, supplier and site service, to customer specification and quality. Values • Honesty, transparency and responsibility are our game. • Quality passion in everything we do. Employment Equity Policy Ithuba Valves distances itself from any form of discrimination and commits itself to the promotion and achievement of equal opportunity and fair treatment in the work environment. Ithuba Valves & Industrial Supplies cc, +27 (0) 11 864 2582, sales@ithubavalves.co.za, www.ithubavalves.co.za

Apex Valves South Africa

Apex Valves South Africa (Pty) Ltd was established in 1997 in Centurion as a joint venture with Apex Valves New Zealand.

History It was founded on the premise that excellent products, reliable service, and a commitment to customer satisfaction would grow its client base. The company is now located in Krugersdrop, South Africa, and forms part of the LIXIL Africa brand portfolio.

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Apex Valves South Africa (Pty) Ltd, +27 (0) 86 121 2121, sales.africa@lixil.com, www.lixil.co.za

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SABS Apex Valves adheres to the most stringent global quality standards and has consistently achieved South Africa Bureau of Standards (SABS) certification for all most of its products. We are SABS mark holders to SANS198 functional-control valves and safety valves for domestic hot water supply systems and the SANS1808-53 drain cocks for hot water storage containers.

• Horizontal Split Water Pumps • CPX/HMX Type • SP Type • Vertical Turbine • CPW Type • CSR Type

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Responsibility Apex Valves designs its products and manufacturing processes with sustainability and care for the environment as top priorities.

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Quality Apex Valves nurtures an unrelenting quest for excellence, and continues to research improved product design and manufacturing processes. Apex Valves provides detailed installation information and ongoing product support to customers, and are covered by a the standard LIXIL twoyear warranty.

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Our range of pump products include: • CP/CPO Series • CP7 Type • Vertical Spindle/ Cantilever Pump • HM Process Pumps • CSW Type • CSY Type • Process Pumps

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Technology Apex Valves’ culture is anchored in innovation and quality in product design and manufacture, producing high quality, innovative products that are internationally recognised.

Design Apex Valves designs and manufactures control valves for domestic hot water installations i.e. pressure control, vacuum breakers, temperature and pressure safety valves, tempering valves and various solar geysers valve variations.

Over 25 years of experience in designing and manufacturing a complete range of centrifugal pumps for a broad spectrum CSO/CP of industrial, process and general applications.

Providing customised pump solutions to various industries

Pump design techniques that ensure our pumps are manufactured to last

High performance - high quality products, excellent service

Alloys to suit all applications Proud Manufacturers of SAMCO® Pumps

Pipes, Pumps and Valves Africa - Jan/Feb 2021

All sleeves and parts are interchangeable Established in 2006, Fluid Power Valve Technologies (Pty) Ltd manufactures the Wafer-and-Flanged Model Clarkson-type Knife Gate Valves, in sizes: 50mm – 700mm.

VALVES

Fluid Power Valve Technologies (Pty) Ltd developed a Polyurethane-type Knife Gate Valve for more aggressive slurries, in sizes: 50mm – 750mm. Their valves are locally produced and manufactured in Gauteng, South Africa. They conform to the minimum threshold for Local Content & Production of 70%. The Mining Charter 3 stipulates Preferential Procurement via these locally produced and manufactured valves. Polyurethane Knife Gate Valves (SGV): The Fluid Power Valve Technologies (Pty) Ltd polyurethanelined Knife Gate Valves are for aggressive slurries, available in sizes: 50mm-750mm. Built with a cast SG Iron GR. 42/WCB body and features a heavy-duty stainless-steel blade; Options: 304/316/2205. It has a unique single-piece body construction that allows for full Polyurethane wear-resistant lining, built in defector cone and flush out points. No leaks, free from cavities, preventing slurry build-up or blockages, while reducing head loss and turbulence therefore greatly extending the life of the valve.

Available in mounting to table D – ANSI and BS standards. The types of actuation that are available: Hand Wheel – Gearbox – Pneumatic – Hydraulic – Electric. Flanged Series Knife Gate Valves (FGV): The Slurry Flanged-style Knife Gate Valves are equivalent/ interchangeable with the KGA-FGV series of the Clarkson valves. All spares are interchangeable. Sizes range from: 50mm-700mm. Built with a cast SG Iron GR. 42/WCB or fabricated body and features a heavy-duty stainless-steel blade; Options: 304/316/2205. Removable sleeves on either side of the blade provides a bi-directional, bubble-tight seal with no metal parts in contact with the slurry. Available in mounting to table D – ANSI and BS standards. The types of actuation that are available: Hand Wheel – Gearbox – Pneumatic – Hydraulic – Electric. Wafer Series Knife Gate Valves (WGV): The Slurry Wafer-style Knife Gate Valves are equivalent/

“SGV-Polyurethane Knife Gate Valves, 50-750mm, with various actuators.”

Pipes, Pumps and Valves Africa - Jan/Feb 2021

VALVES

“x4 WGV-Wafer Series Knife Gate Valves, 700mm – DA.” interchangeable with the KGD-WGV series of the Clarkson valves. All spares are interchangeable. Sizes range from 50mm-700mm. Built with a cast SG Iron GR. 42/WCB or fabricated body and features a heavy-duty stainless-steel blade; Options: 304/316/2205. Removable sleeves on either side of the blade provides a bi-directional, bubble-tight seal with no metal parts in contact with the slurry. Available in mounting to table D – ANSI and BS standards. The types of actuation that are available: Hand Wheel – Gearbox – Pneumatic – Hydraulic – Electric. Fluid Power Valve Technologies (Pty) Ltd also have all the

spares and actuators in stock to repair/service your valves for: • FGV | KGA | SKG-F | TG SERIES. • WGV | KGD | SKG-W | TGW SERIES. • SGV. The brand “Clarkson”, is used for reference purposes only and does not imply that any part is the product of this manufacturer. Fluid Power Valve Technologies, +27 (0) 11 452 5668, valvesales@fluidpower.co.za, www.fluidpower.co.za

FLUID POWER GROUP OF COMPANIES

Valve Technologies

Pipes, Pumps and Valves Africa - Jan/Feb 2021

All about Valve Coefficient

VALVES

What is Cv? Cv is the Valve Coefficient, and is a measure of the capacity of a valve, which takes account of its size and the natural restriction to flow through the valve. Using published formulae it is possible to calculate the Cv required for an application. By comparing this calculated value with the Cv capacities of different valves it is possible to select a suitable size and type of valve for the application. Common Definition of Cv: The Cv of a valve is the quantity of water in US gallons at 60 °F that will pass through the valve each minute with a 1 psi pressure drop across it. What is the difference between actual, standard and normal flow rates for gases? The difference between these flow rate units is at what pressure and temperature the measurements apply. • Standard flow units refer to a pressure of 1 atmosphere (101,3 kPa) and 15oC • Normal flow units refer to a pressure of 1 atmosphere (101,3 kPa) and 0oC • Actual flow rates refer to the actual pressure and temperature of the process • The universal gas equation can be used to convert between them: What is Cavitation? Cavitation is a condition that occurs in liquid flow where the internal pressure of the liquid, at some point falls

below the vapour pressure and vapour bubbles form and at some other point downstream rises above the vapour pressure again. As this pressure recovers so the bubbles collapse, and Cavitation takes place. It is possible to predict where cavitation will occur by looking at the pressure conditions and the valve recovery factor. However, it is important to recognise that the damage that occurs is dependent on the energy being dissipated and is thus flow dependent. Cavitation sounds like stones passing through the valve. What is flashing? Flashing is a condition that occurs with liquid flow where the pressure falls below the vapour pressure and remains below it. There are then two phases flowing (i.e. liquid and vapour) downstream. Severe damage can occur inside a valve due to erosion caused by the impact of liquid droplets travelling at high speeds. What is Choked Flow? Choked flow (otherwise known as critical flow) takes place in a valve when an increase in pressure drop across the valve no longer has any effect on the flow rate through the valve. It occurs when the velocity of the gas or vapour reaches sonic (Mach 1) at the vena contracta. Choked flow is not necessarily a problem in valves but does need to be taken into account in the Cv calculations. For liquids, choked flow indicates the onset of full cavitation, which usually requires special steps to be taken to reduce damage. With clean gases there is no problem with choked flow. Use the choked pressure drop in any equation to calculate Cv or flow rates. High noise levels may be generated. Solid particles in gas flow will cause erosion due to the high velocities involved. With liquids full cavitation will occur when the flow is choked. High recovery valves, such as ball and butterfly, will become choked at lower pressure drops than low recovery valves such as globe which offer a more restricted flow path when fully open. How can Cavitation damage be contained? Three methods exist for treating cavitation in control valves – the first is to ensure that the plug and seat are made of a material that can resist the damage (e.g. stellite hard facing). The second is to control where the bubbles collapse and keep this away from vulnerable components (see Cav Control trim). The third is to control the pressure drop and velocities to ensure that the liquid pressure does not fall below the vapour pressure – thus eliminating cavitation altogether. (Please refer

Pipes, Pumps and Valves Africa - Jan/Feb 2021

to Special Trims Technical bulletin for more information on these options. How can Flashing damage be contained? Flashing cannot be eliminated in the valve – if the downstream pressure is less than the vapour pressure then flashing will occur.

Is the velocity of a fluid in a control valve critical? The velocity is one of the more important considerations in sizing a control valve. For long life on liquid applications the velocity at the exit of the valve body should be less than 10 m/s. This compares with generally accepted line velocities of about 3 m/s, which explains why control valves often are smaller than the line size. On gases and vapours the velocity at the exit of the valve body should be less than 0,33 Mach (1/3rd of sonic) for noise control valves and less than 0,5 Mach where noise is not a consideration. What is the difference between a liquid, a vapour and a gas? These are all different states or phases in which a fluid can exist. H20 exists as a solid (ice), liquid (water), vapour (saturated steam), and a gas (superheated steam) – it depends on the temperature and pressure which phase is current. Practically the most significant difference between liquids and vapours/gases is the compressibility. Liquids are for most practical purposes incompressible where as the density of gas and vapours varies with pressure. What is a desuperheater and how does it differ from an attemporator? A desuperheater is a device that is used to control the addition of water to superheated steam to reduce the temperature to within 10°C of saturation. An attemporator also adds water to steam to control its temperature but the set point temperature is higher and the downstream steam is still superheated. Generally desuperheaters are used in process plants where the steam is used for heating. Attemporators are used more in power stations for interstage temperature control. Why do different control valves have different characteristics? Some valves have an inherent characteristic that cannot be changed, such as full port ball valves and butterfly valves. For other valve types, such as globe, the characteristic can be changed to suit the application. Ideally the inherent valve characteristic should be chosen to give an installed characteristic as close as possible to linear (see inherent vs installed characteristic). This enables

VALVES

To minimise the damage: • Hard face trim (using hard facing materials such as Stellite, or Tungsten Carbide) • Use more erosion resistant body material • Increase size of valve, thus reducing the velocity • Use angle valve – flow over plug

the loop to remain tuned at all conditions with the same calibration settings. (See definition of - = % and linear characteristic). Definition of linear and = % characteristic Linear - For equal stem movements the change of flow resulting from the movement is constant throughout the stroke. =% - For equal stem movements the change of flow resulting from the movement is directly proportional to the flow rate immediately before the change took place. Besides the loop gain and installed characteristic considerations, =% trim will generally give better rangeability and better control at low flow rates. Linear trim will give better control at flow rates over 50% of the valve capacity. Definition of Linear and Equal Percent Characteristics Equal Percent characteristics. The change of flow resulting from a fixed increment of valve travel is directly proportional to the flow immediately before the change took place. Linear characteristics. The change in flow resulting from a fixed increment of valve travel is constant throughout the whole stroke. General rules. • Use Equal Percent if in doubt. • Use Linear for level control. • Use Equal Percent for pressure control. • Use Linear when the pressure drop across the valve is a large proportion of the total pressure drop. Mitech Control Valves (Pty) Ltd, +27 (0) 11 927 4850, enquiries@mitech.co.za, www.mitech.co.za Pipes, Pumps and Valves Africa - Jan/Feb 2021

BMG’s SEIM spindle screw pumps efficiently handle a wide range of liquids

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BMG – exclusive distributor of SEIM screw pumps throughout Africa – supplies and supports the full range of SEIM spindle screw pumps, flow meters and in-line relief valves. “These robust pumps and related products - which are manufactured to stringent quality specifications in accordance with ISO 9001:2000 standards – are designed for dependable use in many sectors, including mining, power generation (wind and hydropower generation), petrochemical, oil and gas, paper, steel, automotive and marine industries,” says Joe Pinheiro, BMG’s National Product Manager, Pumps. “Key advantages of SEIM pumps include low pulsation levels, reduced noise during operation and high selfpriming capabilities. These pumps are able to handle high viscosities and ensure optimal performance, even with air entrapped in oil. The design of these low-maintenance units prevents the possibility of pollutants being released into the medium.” BMG’s SEIM range encompasses three spindle screw pumps, for viscosities up to 100 000 cst, available with or without built-in relief valves and two-spindle screw pumps, for viscosities up to 20 000 cst, available with or without gear drives. SEIM pumps are also available by API 676 (latest edition). Flow meters are rated for 200 and 400 bar and in-line relief valves facilitate flows up to 10 000 L/min up to 100 bar. Pumps can also be customized to offer up to 20 000 L/min and up to 200 bar, depending on requirements.

Included in this portfolio, is a selection of pump models capable of handling a wide range of liquids at different flows and various pressures. SEIM pumps are designed to efficiently handle liquids that include various grades of mineral and synthetic oils, HFO and LFO fuel oils, diathermic oils and liquids with little or no lubricating properties, as well as liquids in the food industry and for cosmetics and soaps in the pharmaceutical sector. BMG offers a technical advisory service to ensure selection of the most suitable pump size for every specific application. The company supports this range with a spares facility and 24-hour maintenance service through more than 100 BMG branches and a wide distribution network in South Africa and across borders into Zambia, DRC, Swaziland, Botswana, Mozambique, Namibia and Tanzania. BMG World, +27 (0) 82 852 9894, josep@bmgworld.net, www.bmgworld.net 24

Pipes, Pumps and Valves Africa - Jan/Feb 2021

Regular desilting vital for mine ponds

PUMPS

Ensuring sufficient water storage capacity in mines’ process ponds is crucial for the optimal functioning of mineral treatment plants, and this means regular desilting must be conducted. This is according to Lee Vine, managing director of Integrated Pump Rental, whose company is frequently called upon to urgently attend to process ponds that have silted up.

required training,” he says. He notes that recovering the value of the minerals in the silt can often cover the cost of desilting, with many mines being designed to recycle the sediment back into their process plants.

“While too much silt in these ponds can disrupt plant operations, this situation also raises the risk of overtopping which can lead to costly environmental damage,” says Vine. “Our locally developed SlurrySucker system can readily address the problem, but it should not be left too long. Ideally, mines would have a pond monitoring strategy and a regular schedule for desilting operations.”

Choosing whether to contract-out the desilting function or conduct it in-house will depend on each mine’s conditions and preferences, says Vine. Integrated Pump Rental can provide the desilting service on a turnkey contract basis or rent the necessary equipment to the mine. For some mines, it might make sense to invest in their SlurrySucker unit.

He highlights that fully functional process ponds are increasingly important elements of a mine’s water balance, as mines actively pursue water conservation efforts to make themselves more self-sufficient. Strategies include more reuse of mine water, so ever-closer management of water flows is necessary.

“We work with customers to find the right solution, assessing their detailed requirements before making a proposal,” Vine says. “Where mines wish to conduct the work themselves, we can train their staff and fully support the equipment with prompt parts availability and all the necessary engineering and maintenance services.”

It is usually possible to observe the bank of silt building up once it fills about 40% of a pond’s volume, he says. This indicates that prompt action is required. “With our proven technology, the desilting is relatively straightforward and not labour-intensive. It can be conducted effectively by just a couple of operators with the

Pipes, Pumps and Valves Africa - Jan/Feb 2021

Integrated Pump Rental, +27 (0) 11 894 2906, admin@pumprental.co.za, www.pumprental.com

Hilton Hotel upgrades with Grundfos pump set A Grundfos Hydro MPC-E booster pump set with four 7,5 kW motors and CIM 500 control system installed at the Hilton Hotel in Sandton is delivering both environmental and cost-saving benefits.

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“The new energy efficient system has helped reduce our carbon footprint and combat climate change – an important part of our social responsibility,” says Charmaine Spasojevic, chief engineer at the Hilton Hotel. Spasojevic says the cost-saving will be achieved not only through the consumption of less electricity but through reduced maintenance. This is due to the elimination of the separate variable speed drives (VSDs), meaning fewer items of plant to maintain. Management at the 12-floor, 329-room hotel will also have real-time access to operating data from the pump set. “The system integrates seamlessly with our building management system (BMS), allowing us full control over our service,” she says. The Grundfos CIM 500 control system allows the hotel to monitor various aspects of the pump set, including its running hours, energy consumption and discharge pressure, as well as any power supply problems or water shortages. According to Errol Dobson, Grundfos SA’s team leader building service, the Grundfos Hydro MPC-E maintains a constant pressure through continuous adjustment of the speed of the pumps. “The system’s performance is therefore adapted to the demand through the pumps being cut in and out as required, and through parallel control of the pumps in operation,” says Dobson. “Constant pressure control is also ensured through the continuous variable adjustment of the speed of each individual pump.” The solution was designed and supplied in collaboration with Johan Truter, sales director at API Pumps Gauteng, and installed in June 2020.

The Grundfos hydro MPC-E booster pump set with four 7,5 kW motors and CIM 500 control system.

Grundfos service engineer Marius van Wyk commissioned the pump set, which will be serviced and maintained through a Service Level Agreement (SLA) with Grundfos. Grundfos South Africa (PTY) Ltd, +27 (0) 10 248 6000, info_za@grundfos.com, www.grundfos.com

Pipes, Pumps and Valves Africa - Jan/Feb 2021

Vert Energy to supply and support Yanmar industrial engines and power products in Southern Africa

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Vert Energy has been appointed by Yanmar as the official distributors in Southern Africa for Yanmar industrial engines. “What’s exciting for the African market is easy access to the globally respected Yanmar brand through local specialists, offering a dependable service and technical support, in line with stringent international standards,” explains Vert Energy’s Sales and Marketing Director, Ryan Robertson. “The addition of Yanmar diesel engines and power products to our electro-mechanical power generation range provides new market and application opportunities. This development also extends our services not just to Genset manufacturers, but to many sectors, including agricultural, mining, climate control and construction. “At Vert Energy, we align ourselves with companies that vertically integrate with our energy and electro-mechanical business units and provide the industry with products that are at the forefront of reducing carbon footprints for use in environmentally-conscious energy solutions. By selecting the best partners and products, we can meet our customers’ exact requirements. Product efficiency, competitive market positioning, pristine quality standards and guarantees of extended service life, are our main selection criteria. In Yanmar, we have found a partner with whom we share all these important values. “Our team strives to not just support the direct sale of Yanmar products, but we will also work closely with global OEM’s who integrate Yanmar engines in their equipment. Yanmar’s extensive range of diesel engines provides a variety of solutions for new capital equipment manufacturers, as well as the option of the potential retro fitment in certain ranges to engines that are now Tier 4 Final Stage 5 compliant with European emission standards. “The addition of Yanmar’s L Series diesel engines strengthens Vert Energy’s position in the local pump

industry. The company has been supplying electric motors to the pump industry for many years and the addition of a mechanical diesel powered engine as an alternative, represents an exciting opportunity for the company.” Yanmar’s L-series air-cooled diesel engines and TN-series water-cooled diesel engines are key products now available through Vert Energy, which are geared to enhances efficiencies of the power generation and electromechanical power transmission industries. According to Vert Energy, although legislation surrounding emission levels in many African countries is not as stringent as in Europe or Asia, the need for cleaner, fuel-efficient solutions is at the forefront of product development locally, particularly in the underground mining environment. Benefits associated with the Yanmar L-Series air-cooled diesel engines include longer service intervals and improved fuel consumption. Lower emission levels in the Tier 5 range of products present a strategic opportunity for local manufacturing companies looking to export to emission regulated territories. Vert Energy’s service to the electro-mechanical power generation sector also encompasses a repair and maintenance facility. The company has made a substantial investment in skills training to ensure technicians can efficiently service and support a wide range of products throughout the region. Also, the company holds a comprehensive range of standard products and spare parts to support the local market. Highly skilled technicians assist with inspections, diagnostics and repair procedures, re-assembly, installation and commissioning, as well as the implementation of preventative and predictive maintenance programmes. The combination of Yanmar’s quality branded products and Vert Energy’s technical expertise and broad distribution reach, augers well for electro-mechanical power generation on the African continent. Vert Energy also supplies and supports the entire Leroy Somer LS range of alternators and Nexus electric motors and power transmission components. The company is also the authorised sales and support partner for DEIF generator controls, NSM alternators and Energie power products. Vert Energy, +27 (0) 86 111 8378, ryan.robertson@vertgroup.co.za, www.vertgroup.co.za

Pipes, Pumps and Valves Africa - Jan/Feb 2021

Solid Handling Specialists

With more than 53 years in manufacture of dry bulk materials handling equipment, AMD-ROTOLOK is proud to continue the supply of quality equipment to our many long standing and valued both local and international clients

Our partial product range includes: Rotary Valves Flap Valves Knife Gate Screw Conveyors Bucket Elevators, ect.

Theo Sherman Managing Director

Tel: +27 (0) 11 674-1166/7, Cell: +27 (0) 82 411-8658, Fax: +27 (0) 11 674-4372 theo.sherman@amd-rotolok.co.za, www.amdrotolok.co.za

Wilo Rexa SOLID-Q with Nexos Intelligence for a smart sewage pump station Pumping untreated sewage is becoming increasingly demanding due to the growing prevalence of solids and fibrous material which, in turn, leads to increased operating costs.

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The new Wilo-Rexa SOLID-Q with Nexos Intelligence is characterised by operational reliability, energy efficiency and the highest level of digital networking. The smart combination for cost effectiveness combined with the additional convenience in your day-to-day work. Your advantages • Maximum operational reliability and reduced service costs, especially for pumping untreated sewage, thanks to self-cleaning properties • Lower energy costs thanks to high hydraulic efficiency and up to IE5 motor technology in wet and dry well installation (based on IEC TS 60034-30-2) • Corrosion protection provided by an optional Ceram coating for a long service life in aggressive media • An optional Digital Data Interface (DDI) with integrated vibration monitoring, data logger, web server and digital rating plate for convenient monitoring and system integration

Pipes, Pumps and Valves Africa - Jan/Feb 2021

• Nexos Intelligence can be integrated for pump and system optimisation This is Water 4.0 • Water 4.0 is the key word that sums up intelligent, connected systems as the fourth level of the water sector revolution. • Water 4.0 is putting the spotlight on digitalisation and automation • Objective: Enabling a future-proof water infrastructure with the environment and water circuit through connecting water users with components • High transparency for water users, meeting current needs That’s why Wilo-Rexa SOLID-Q is Water 4.0 • Connectivity and the transfer and analysis of data are key elements of Water 4.0. In the sewage pump station, reliability, efficiency and convenient connectivity are currently the main focus. • The integrated Nexos Intelligence takes account of digitalisation and automation by recognising clogging and starting rinsing cycles automatically. • The Wilo-Rexa SOLID-Q with Nexos Intelligence combines the latest developments in hydraulics, motor technology and electrics with intelligent control software. • It is characterised by operational reliability, energy efficiency and the highest level of digital networking. • Connecting with the communication network via in-built Ethernet interface with standard network protocols and control through integrated web servers. • Remote monitoring and documentation of pumps, maintenance and sensor data through the Digital Data Interface. • It can manage a pumping station with up to four pumps independently in a master/ slave arrangement and includes an automatic mode for reducing pipe friction

losses and energy-optimised control. • With the Ethernet interface, installed in the pump for the very first time, the system can communicate with other components of the smart sewage pump station and pass on the data for further analysis to a control system or cloud.

PUMPS

Discover Wilo-Rexa SOLID-Q product features here • Comprehensive, cuttingedge sensors to ideally monitor conditions and identify faults at an early stage • High-efficiency SOLID-Q hydraulics with self-cleaning characteristics • Integrated Nexos Intelligence with vibration monitor • IE5* motor technology (*Based on IEC TS 6003430-2) • Motor temperature monitoring • Bearing temperature monitoring • Integrated leakage detection In smart networks, the security of sensitive data is also always key.

• The Wilo-Rexa SOLID-Q with Nexos Intelligence is a communicative pump which also ensures full data security. • The operator decides for themselves at all times which data they approve for transfer and therefore has full control over their own system data. • With its standardised network interface, the system offers all connection options for modern communications, in combination with individual accessories, from purely local communications in the pumping stations and external VPN access to cloud communications, always on the right level for the security needs and requirements in question. Nexos LPI for systems with external control. • Each pump features its own dedicated web interface • Setpoint specification using external PLC • The pumps adjust automatically to pressure and flow • Each pump controls its own frequency converter and I/O modules • Also suitable for restorations and compatible with external PLC systems • Each pump operates individually • Easy integration Nexos LSI for systems without external control. • Nexos system specifies the setpoint. • Master pump controls up to three additional pumps. • Each pump controls its own frequency converter. • One master online interface plus individual interfaces. • No additional PLC control system required. • Comprehensive automatic modes. Wilo, +27 (0) 11 608 2780, +27 (0) 72 0422 445, www.wilo.com Pipes, Pumps and Valves Africa - Jan/Feb 2021

Troubleshooting a pump all you need to know

PUMPS

Learning to diagnose and rectify the basic problems plaguing centrifugal pumps is an important skill that industry should cultivate. Pipes, Pumps & Valves Africa finds out more. One of the major problems facing the pumping industry is the lack of skill when it comes to dealing with problems and failures of equipment out in the field. According to Dan Painter, product and training and development manager at Flint & Walling, this is a common challenge found across the world. Speaking during a recent online event Painter said it was essential for the pump industry to address the lack of skill and experience. This American headquartered pump manufacturing company has been a long-standing advocate for improving general capability within industry to allow for a detailed evaluation of pump problems. Develop skills “When troubleshooting above the ground centrifugal pumps there are two areas to focus on – the pump and the motor,” explained Painter who focused his presentation on troubleshooting the pump. “Centrifugal pumps are quite simple and it really is just about gaining the knowledge and the experience to troubleshoot.” According to Painter, it is important to know how the pump is assembled. “A mounting ring bolts the pump to the face of the motor – this ring essentially marries the pump to the motor. Inside the mounting ring are the shaft seal and the gasket. The impeller is thread onto the end of the motor shaft and then the suction flange assembly is on the end of that – bolted on with four bolts. There is not much more to it than that.” He said more impellers were added if it is was a multi-stage pump, but the concept of troubleshooting remained the same as that of a single-stage pump. “If you want to repair or rebuilt a pump or even just

Suction Flange Assembly

Impeller

Pipes, Pumps and Valves Africa - Jan/Feb 2021

figure out what is wrong with it, then there are a couple of obvious things to do first,” said Painter. “Before doing anything it is essential that the pump is disconnected from all power outlets. The second step is that any pressure on the pump must be relieved. It could simply require one to open a faucet and drain the water off the system. Only when the pressure is down to zero is it safe to open up the pump.” Painter advises using a socket wrench to remove the four bolts off the suction flange assembly. “In the field, you will have to bang the suction flanges with a rubber mallet to loos it from the gasket material. It is not uncommon that this happens and it does require a bit of muscle.” Once the suction flange has been removed the impellers can be turned off the shaft preferably using a strap wrench. “Impellers can be manufactured from different types of material. It is, therefore, better to use a strap wrench when removing them rather than a vice grip for example. You don’t want to grip around the eye of the impeller too tightly as it might distort it. Care has to be taken in removing impellers.” Clean as you go Painter’s advice is to check for debris as each item is removed. “Once you have the impeller off check fro debris that may be lodged in it. As the eye of the impeller is open also check that using a piece of wire or a screwdriver. Go up into the veins and make sure nothing is lodged in these areas.” “Dismantling a pump does require some care so that you don’t break parts off. As you disassemble the pump use a

Shaft Seal gasket

Mounting Ring

While doing this it allows one to look for excessive wear and tear as well as damage that could have been caused by abrasives or sand. “This as well as excessive heat will impact the performance of the pump as they cause harm to the impeller. Once you have disassembled the pump do a thorough visual inspection of all the components, but especially the impeller.” Putting it all back When replacing the mechanical shaft seal in the back of the pump it is advisable to use premium products. “When it comes to seals look for superior products. We advise using silicon carbide seals over ceramic carbons that many pumps incorporate in their designs. Our opinion is that the silicon carbide is far superior handling abrasives and temperature increases better.” Painter said the shaft seal was often the most commonly replaced item on a pump. “If you see water dripping out

the back of the pump, it is a sure sign that you have lost a shaft seal. It needs to be replaced immediately as the leaking will only get worse.” According to Painter, one needs to take a lot of care when putting in shaft seals. “It consists of three components and is not the easiest thing to get out of the pump. When removing just get it done as it does not matter if it breaks as they will be replaced. The cavity where it sits must be clean and not corroded before putting a new shaft seal in.”

PUMPS

wire brush to get all the existing gasket material off. It is advisable that if you break a pump down that you replace the gaskets during reassembling. Clean all the castings along with the impellers.”

He advises dipping the seal in water to lubricate it before assembling and not to touch it with one’s hands during the assembly. This will transfer debris onto the equipment and increases the chance of leaking. “Once you have completed cleaning and replace all the parts the suction flange is replaced and bolted in with the four carriage bolts and the pump should be good as new.” All Credit to Flint & Walling for the Graphics ! Flint & Walling, stuarts@zoeller.com, www.flintandwalling.com

Pipes, Pumps and Valves Africa - Jan/Feb 2021

Pump intelligence to your system

PUMPS

Pumps, pipeline and fittings can get seriously damaged if pressure or flow are out of control and such occurrences are not tracked early. The Pump Genius is a customizable feature of WEG drives that enables your standard VSD to become dedicated for pumping systems. It ensures accurate pressure / flow control throughout the processing cycle, starting with raw water and its usage, ending on wastewater treatment.

Energy Savings PID controller of WEG VSDs helps the pump to achieve the best performance. Even with a minimum speed reduction of 20%, almost unnoticed in the application, the power consumption is cut almost in half.

With an easy-to-use programming wizard, Pump Genius helps you to minimize downtime and maximize energy savings. Everything you need is selecting one of the three options that best fits to your application.

Pipe Charging Mode Pipe charging function allows for initial filling and lubrication as it runs for a timeframe at a preconfigured slow speed. Also, as it achieves a soft pipe filling, water hammer is avoided.

Simplex The Simplex software adds ideal features to the VSD for single pump control. Multipump Multipump is the best choice when a pumping system needs to be integrated with a costeffective solution. It enables one single VSD to control up to 5 pumps via DOL, soft-starter or other starting methods. Multiplex Multiplex software is the most complete solution to accurately control flow and pressure with high reliability. The VSDs control, monitor and manage the entire system on their own. There is no need for additional PLC, HMI or any external devices thus installation costs can be optimized.

Sleep and Wake-Up Modes / Sleep Boost Sleep mode allows the pump to save energy and preserve the motor health when demand / flow is below the required for long periods, keeping the pump in standby mode. Along with the Sleep mode the software carries the sleep boost feature where a momentary overpressure is delivered to the pump before the system to be shut off. Wake-up mode restarts the system automatically when the pressure falls below the lower set point. Dry Pump Protection A dry run persisting for long periods can cause potential damages to the pump. Pump Genius detects this operating conditions with no sensor, providing warnings and protection for the system. Broken Pipe or Leakage Detection Pump Genius diagnoses when a pump is consuming more power than it should. Through load and speed information, the drive automatically monitors and warns if a pipe leaks. Also, maximum system pressure can be configured to trigger when clogged pipe conditions take place. Pump Cavitation Monitoring When a pump cavitation condition (e.g. low level of fluid) is detected, the drive reduces the pressure in the pipeline to avoid mechanical breaks and increases the impeller lifetime. Fixed or Floating Control The user is able to select if the pumps will be started over a predetermined or rotating sequences with the intent to obtain equal wear and tear of individual pumps, as the logic monitors the runtime of the individual pumps and based on that, the specific pump is brought in or out. Programmable Schedules Up to 12 programmable setpoints with time schedule can be setup for controlling the water supply. Jockey Pump Under low demand, only the smaller pump is enabled. As the water consumption increases, the larger pump is activated and jockey pump is deactivated.

Pipes, Pumps and Valves Africa - Jan/Feb 2021

PUMPS

Deragging The drive is able to perform an automatic clean of the impeller every time the pump is started, whenever a clogging is detected or on user demand increasing pump lifetime. Master/Slave Configuration Master/slave modes enable total management of the system. When conditions like broken sensor wire or communication wire is detected, another VSD will be automatically be nominated as master, taking the system management reestablished to keep regular conditions. Force Rotation Force rotation makes the last pump in the system to be shut off when rotation is at certain low speed but it is not yet the sleep level. With old fashion logic the last pump would run indefinitely. WEG in Desalination Plant in Algeria Due to estimates, which shows that in the next 30 years the amount of water available per person in the north of

Africa will be reduced to 80%, the Algerian government is investing on seawater desalination. This includes the construction of three large desalination plants with production capacity of 400 cubic meters of water per day which will greatly benefit a population of over 2 million. Two units have already been concluded and the third is now being installed. The Tlemcen-Honaine plant, located near the city of Oran, close to the border with Morocco has a production capacity of 150 thousand cubic meters and it will attend to 750 thousand inhabitants directly. It’ll be one of the largest in the world. WEG supplied Variable Speed Drives and soft-starters for the pumps that will withdraw water from the Mediterranean Sea at Honaine providing soft starting and speed variation for pumps which will result in higher efficiency. It was invested in the three plants a total amount of US$ 400 m. Besides the desalination plants, the resources will also be used in the construction of dams and for sanitation. According to Daho Ould Kablia, “with the new program, the Algerian government intends to find a balance between the different regions of the country and provide a fair supply and distribution of water and the services related to it.” Sustainability Sustainability has been an integrated part of WEG’s philosophy since its foundation. That is why awareness with environment protection has been a major concern in the company for the correct use of natural resources. Half of the energy produced around the world is used to operate pumps, while one third of the world’s population live in areas experiencing water shortages. As known by nations, the effective use of electric power reduces significantly environmental impacts and helps to guarantee the sustainable use of natural resources for the future generations. WEG Group automacao@weg.net www.weg.net Pipes, Pumps and Valves Africa - Jan/Feb 2021

Gear Pump Manufacturing has solid expertise

PUMPS

We manufacture a range of Bearing, Bushing, PTO Truck Pumps, straight axial Piston Pumps and Flow Dividers. We also manufacture a complete range of internationally interchangeable commercial components for Bearing pumps, Bushing pumps, Motors and Flow Dividers. • Our pumps and parts are of exceptional quality. • Our equipment is provided at an economic cost. • We are proud of our fast response time and quick delivery times. • We maintain a comprehensive stock-holding of spares. • We carry out in-house porting to exact customer requirements. • We have a professional custom-design capability at your service • We deliver internationally. • We support well-stocked Distributors in USA, UK and Australia. Our Expertise We have solid expertise in the following: • Pump Design • Precision Casting, Engineering and Machining • Custom Hydraulic Pump Design and Manufacture • Pump Rebuilding • Gear Set Manufacture • Thrust Plate Manufacture • Continuous Process Improvement to ISO 9001:2015 standards Products The company manufactures and offers a comprehensive range of pumps to meet specific customer requirements as well as those of the general market. Services The company manufactures and provides pump design services for customers needing customised solutions.

We handle design from specification to final blueprints and will manufacture custom-built pumps from these plans if the customer wishes to place an order. US and UK Supply Chain Warehouses We service global markets through our worldwide Supply Chain Network, supporting and replenishing them from three international warehouses – one located in Cape Town, South Africa, another in Nesbit, Mississippi, USA and a third in Bromsgrove, Worcestershire in the United Kingdom. With products stored in these three locations, we are able to deliver speedily and efficiently to any place in the world where our products are needed. Gear Pump Distributors (UK) Ltd was established in April 2000 as a subsidiary of our manufacturing plant and foundry in South Africa. It supplies the UK and European/ Middle East markets with gear pump parts and complete units. By carrying an extensive inventory of pumps, motors and spares, GPD is able to ship overnight and supply parts and complete units within 24 hours of order from the UK. In August 2015, GPM-US made the investment in a Supply Chain Warehouse located just south of Memphis, TN in Nesbit, MS. Establishing this supply chain warehouse has allowed our western customers to reduce their inventory dollars and the quicker ship time has given GPM-US a greater position in the market. International Sales Approximately 70% of our production is exported to countries in North and South America, Europe, the Middle East, South East Asia, Africa and Australasia. As a consequence of our reinvestment philosophy and policy, we have been successful in substantially growing our sales and production capacity to meet the demand for our quality product in the market. Metallurgic Technology GPM’s full range of gear-set product complies with the international standard, ensuring the metallurgical elements of Molybdenum and Nickel are present in the base material for premium quality requirements necessary in hydraulic gear pump applications. Sectional Construction: Standard parts, cast from high strength grey iron, SG iron, compacted graphite iron (CGI) and bronze cast components can be assembled in a wide variety of configurations to suit almost any application. Superior metallurgical structured CGI material is used in the manufacture of the Higher Pressure requirements of our Bushing Pump Range.

Pipes, Pumps and Valves Africa - Jan/Feb 2021

Our Foundry Commissioned in February 2002, our Foundry is located on the same site as our manufacturing facility in Cape Town. Expansion has mirrored that of GPM.Physically, the foundry has been expanded by more than 50% in order to cater for increased volumes. Currently the foundry produces Grey Iron, SG Iron and Compacted Graphite Iron. Superior metallurgical structured CGI material is used in the manufacture of the higher pressure requirements of our Bushing Pump Range. The foundries production is dedicated to the requirements of GPM and has sufficient capacity to handle the expected growth into year 2018.

Quality Our quality management system makes use of statistical analyses to determine manufacturing process capability. The stability of manufacturing processes is continuously monitored and managed via machine run charts. In line with our technology investment philosophy, we have recently invested in a 3 dimensional co-ordinate measurement machine. This will increase productivity by means of faster first-off measurement as well as enabling expanded statistical sampling checks. Technology Investments Our focus is purely on gear pump and motor assembly, ensuring consistently high-quality products. Our plant modernisation programme is ongoing. For the past two years we have increased our manufacturing capability and capacity with the latest technological, state of the art, CNC turning, milling, and grinding machinery. Pump Assemblies We have porting capabilities to suit the needs of all our customers. Our volumes of pump assemblies have more than quadrupled during the last two years. This necessitated the construction of a new and substantially larger pump assembly area as well as new and upgraded test stands. All assemblies are tested on computerised test stands which have multiple flow, pressure, temperature and speed testing capability.

Inventory We maintain substantial investments in inventory at our Cape Town factory and wholly-owned GPM-US Distribution Center in Nesbit, Mississippi, USA.

PUMPS

Environmentally Responsible In the interests of the environment and to further contain costs, we invested in a swarf pelletizing machine. Consequently, a large portion of the foundry raw material is obtained by pelletising iron and steel swarf and off cuts from the GPM facility. Bronze castings for the machining of thrust plates are produced in a similar fashion. Reclaimed machining coolants and cutting oils are recycled.

GPM-US supports our North American distributors and is alo able to supply any distributor or customer on other continents if that is quicker or more convenient for them. We supply and support distributors worldwide, including Algeria, Angola, Argentina, Australia, Belgium, Canada, Chile, Colombia, Ecuador, Egypt, India, Italy, Mexico, Namibia, Peru, Philippines, Saudi Arabia, Singapore, South Africa, Sudan, Swaziland, Taiwan, Tanzania, Thailand, Turkey, U.A.E, United Kingdom, Uruguay, USA, Vietnam, West Malaysia. ISO 9001:2015 Certified Our production facilities are well established and include a professional design facility and a cast iron foundry on the premises, all operating in accordance with ISO 9001:2015 standards and manufacturing to local and international specifications. GPM has been assessed and certified as meeting the requirements of ISO 9001:2015. B-BBEE Level 4 Compliant GPM is a Level 4 Contributor to South Africa’s B-BBEE code of practice. Gear Pump Manufacturing, +27 (0) 21 531 9330, sales@gearpumps.co.za, www.gearpumps.co.za

October 13–16, 2021

Johannesburg, Gallagher Convention Centre, Midrand Pipes, Pumps and Valves Africa - Jan/Feb 2021

The digital sensor age is here Danfoss has engineered solutions that allow the world to use resources in smarter ways—driving the sustainable transformation of tomorrow, since 1933. Danfoss produces more than 250,000 products in 70 factories across 25 countries every day, developing and refining solutions in response to our customers’ needs.

PUMPS

With the adoption of an ever-growing digital world, Danfoss Industrial Automation has repositioned itself as Danfoss Sensing Solutions, representing the union of application-driven sensor technologies and unparalleled commitment to helping customers navigate their journey into the digital frontier. “Global megatrends increase the need for sensing.” We see OEMs, wholesalers, and installers adapting to it and facing fundamental choices. They’re asking questions like ‘What is the right path for us?’ and ‘Who will help us make the right decisions as we move along?’. Our new name reflects our commitment to embracing that future and is our way of saying: We are your partner in navigating your journey across the digital sensor frontier—today and tomorrow,” says Bert Labots, Vice President at Danfoss. Paired with the name change, Danfoss customers will benefit from a broader product range, such as pressure transmitters, temperature sensors and position sensors, more and increasingly diverse sensor technologies, and unrivalled support and services for sensor ecosystems, as

Pipes, Pumps and Valves Africa - Jan/Feb 2021

well as swift and simple customization. “As a leading global player, we know that adapting to the rapidly changing digital landscape requires a competent partner. Danfoss Sensing Solutions provides industryleading know-how and advanced sensor technologies to navigate the way forward for our customers and partners. A crucial part of this journey is to extend our offering within digital sensor connectivity for wired and wireless sensor solutions. Another differentiator is diagnostics and smart sensors that allow for instant programmability and remote technical support on the sensor side,” explains Labots. Danfoss Sensor Solutions is a global player offering a wide product portfolio within pressure and temperature sensors, and position sensors, to a wide range of industries, such as mobile hydraulics, marine and offshore, water pumps, wind power, industrial hydraulics, industrial air compressors and more. Danfoss South Africa , +27 (0) 11 785 7600, ccs-za@danfoss.com, www.danfoss.com

Connecting Global Competence

Sub Saharan Africa's leading trade fair for water, sewage, refuse and recycling November 4, 2021 July 13 - 15,2 -2021

Gallagher Convention Centre, Johannesburg, South Africa

Showcase your solutions to over 8000 industry players & decision makers! IFAT Africa has established itself as Africa’s leading trade fair for water, sewage, refuse and recycling. The trade fair provides a broad overview of the environmental technologies available in sub-Sahara Africa, with a full and comprehensive range of product categories. The show is the gateway for international companies to the African market and for African enterprises to the global market, connecting with national and international industry partners.

NEW FEATURE: Renewable Energy Zone - Powered by IFAT Co-located trade fairs

SECURE YOUR SPACE TODAY: Tel: +27 11 476 809 • Email: ifat@mm-sa.com www.ifat-africa.co.za | ifat@mm-sa.com

@IFATAfrica

What is dissolution testing? This is a method to determine the drug release over time of a formulation product in an in vitro environment. The USP requirements include both automated and manual techniques with corresponding instrumentation configurations.

PUMPS

The illustration below represents a basic configuration showing (1) a pump arrangement for programmed emptying, washing and refilling dissolution vessels and (2) a pump for sample delivery and dispensing. Fractions are taken via a sampling probe at timed intervals and delivered to fraction vials or on line flow cells before being analyzed by a spectrophotometer or HPLC. Either a peristaltic or piston pump is used typically to dispense sample material to its respective vial. Selection of the type of pump to be used depends on the method of filling the vessels and collection of samples. For automated operation, vessels can be filled, emptied and washed using a peristaltic or gear pump as shown in the illustration. Consideration must be made for volume accuracy and precision along with proper tubing material selection. For sample collection, an alternate approach is to overfill the collection vials and then aspirate the excess fluid until the desired volume is achieved. In this case a peristaltic pump may be used to provide simultaneous sample delivery to the vials. While syringe pumps have been tried for this application, they require filling time and the interruption of flow during the fill cycle. Advantages of a Micropump Positive Displacement Pump • Continuous pulse-free flow • Precise delivery of sample volumes • Small package size • Low vibration • Multi-channel programmable capability

Common Pumping Requirements When selecting a pump consider the following factors: • Number of vessels (and vessel volume) to be analyzed • USP method to be used • On-line or off-line analysis • Level of automation and control • Method of filling, emptying and washing of dissolution vessels. System Configuration Variations Another configuration would require the use of switching valves. In this case media from the vessels continually circulates through the respective switching valve prior to returning to the vessel. At preset time intervals, the valves open, diverting a measured volume of sample to the sample collection line and to the respective vial. For optimum accuracy, a multichannel peristaltic or piston pump would be recommended for this method. The following illustration shows a flow path for the switching valve method. For continuous sampling through flow-through cells, either a piston or peristaltic pump may be employed. This method requires a cell changing mechanism to move each cell into the light path where the absorbence of each sample is analyzed. These measurements are done over predetermined intervals. It is important, therefore, that the flow be virtually pulse-free and constant. The accuracy of the analysis will, indeed, depend on the accuracy and precision of the flow rate. Pumping Technology Manufacturers of dissolution apparatus will find an array of

The diagram shows a dissolution flow path configured with switching valves. 40

Pipes, Pumps and Valves Africa - Jan/Feb 2021

pump choices from Micropump. An external gear or peristaltic pump are options for (1) Empty, Wash, Refill Pump: • Series GA (180) • Series GJ (120) • Peristaltic pump model dependent on pumping requirements A piston, peristaltic or micro annular gear pump are options for Sample Pump: • Series Delta multiple piston pump

PUMPS

The diagram shows a basic dissolution configuration. • Peristaltic pump model dependent on exact pumping requirements • Micro annular gear pump model dependent on exact pumping requirements www.michael-smith-engineers.co.uk/mse/ uploads/resources/literature/Micropump/ MicropumpApplicationNoteDissolutionTesting.pdf

Micropump, info.micropump@idexcorp.com, www.micropump.com

Pipes, Pumps and Valves Africa - Jan/Feb 2021

Werner pumps launches 6-inch 4-cylinder suction trailer

PUMPS

Werner Pumps, leading South African design, manufacture, supply and maintenance specialist in high-pressure jetting equipment, has created a new trailer-mounted 6-inch centrifugal pump unit. MD Sebastian Werner explains that this machine can be used to pump water, as well as solids, in maintenance and troubleshooting applications, such as clearing manholes or dealing with sewage spills. “We developed this non-clogging, self-priming sewage pump unit primarily to help meet the needs of our existing customers, many of whom require this type of equipment to complement their larger jetting trucks they have procured from us,” he explains. “We do our best to be a one-stop-shop for our customers, and we’ve seen that there’s clearly a demand for this type of machine as we’ve already sold several in the few months since we built the first one.” Like all of the trucks and trailers in the Werner Pumps range (excluding the Rapid Response Vehicle), this unit is 100% locally manufactured at the company’s premises in Springs. It features a heavy-duty diesel tank, 4-cylinder air-cooled

Pipes, Pumps and Valves Africa - Jan/Feb 2021

Kirloskar engine, SP6 self-priming sewage pump, heavyduty strobe light and a side-mounted control panel. Designed for stable performance and reliable operation, the unit operates at 750-1450rpm with a flow rate of 20844167 L/min, between 5 and 30 kilowatts. Its back-pull-out construction makes it convenient to use in a variety of applications, from pumping rainwater and common sewage to use on municipal drainage projects and construction sites. Werner says it’s also suited to use in the paper, textile, food processing, chemical, utilities, mining, tanning and water purification industries. The lead-time on one of these units is roughly three weeks from order to delivery. Werner Pumps, +27 (0) 11 362 6280, sebastian@wernerpumps.com www.wernerpumps.com

PUMPS AIR OPERATED DOUBLE DIAPHRAGM PUMPS

Walter Meano Engineering VersaFlo VSE Pumps T: +27 (0) 11 873-8620 F: +27 (0) 11 825-1401 E: wme@mweb.co.za W: www.versaflo.co.za BOOSTER PUMPS

C.R.I Pumps S.A. (Pty) Ltd T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za

FIRE PUMPS

Sulzer Pumps (South Africa) (Pty) Ltd T: +27 (0) 11 820 6000 F: +27 (0) 11 820 6206 E: CSSEnquiries@sulzer.com W: www.sulzer.com DEWATERING PUMPS

KSB (Pty) Ltd C.R.I Pumps S.A. (Pty) Ltd T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za HIGH PRESSURE PUMPS

Sulzer Pumps (South Africa) (Pty) Ltd T: +27 (0) 11 820 6000 F: +27 (0) 11 820 6206 E: CSSEnquiries@sulzer.com W: www.sulzer.com DIESEL PUMPS

C.R.I Pumps S.A. (Pty) Ltd T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za

T: +27 (0) 11 894-2906 E: admin@pumprental.co.za W: www.pumprental.co.za END SUCTION PUMPS

Mather & Platt T: +27 (0) 11 824-4810 F: +27 (0) 11 824-2770 E: info@matherandplatt.com W: www.matherandplatt.com

AESPUMP SA T: +27 (0) 17 631-1003 F: +27 (0) 17 631-1002 E: craigg@aespump.co.za W: www.aespump.co.za

BOREHOLE PUMPS

Integrated Pump Rental

T: +27 (0) 11 876-5600 F: +27 (0) 11 822-2013 E: info-za@ksb.com W: www.ksb.com

SAM Engineering T: +27 (0) 11 823-4250 F: +27 (0) 11 823-4943 E: sales@sameng.co.za W: www.sameng.co.za

Hawk High Pressure Pumps T: +27 (0) 031 274-8555 +27 (0) 10 010-0144 +27 (0) 11 822-2868 E: sales@hawkpumps.co.za W: www.hawkpumps.co.za HORIZONTAL SPLIT CASE PUMPS

Sulzer Pumps (South Africa) (Pty) Ltd T: +27 (0) 11 820 6000 F: +27 (0) 11 820 6206 E: CSSEnquiries@sulzer.com W: www.sulzer.com MAGNETIC PUMPS

Ernest Electro Engineering T: +27 (0) 11 792 9550 E: eeeaman@mweb.co.za W: www.ernestee.co.za CENTRIFUGAL PUMPS

AESPUMP SA T: +27 (0) 17 631-1003 F: +27 (0) 17 631-1002 E: craigg@aespump.co.za W: www.aespump.co.za

Atlas Copco T: +27 (0) 11 821 9854 E: david.stanford@atlascopco.com W: www.atlascopco.com

KSB (Pty) Ltd T: +27 (0) 11 876-5600 F: +27 (0) 11 822-2013 E: info-za@ksb.com W: www.ksb.com

AESPUMP SA T: +27 (0) 17 631-1003 F: +27 (0) 17 631-1002 E: craigg@aespump.co.za W: www.aespump.co.za

APE Pumps T: +27 (0) 11 824-4810 F: +27 (0) 11 824-2770 E: info@apepumps.co.za W: www.apepumps.co.za

SAM Engineering T: +27 (0) 11 823-4250 F: +27 (0) 11 823-4943 E: sales@sameng.co.za W: www.sameng.co.za

T: +27 (0) 17 631-1003 F: +27 (0) 17 631-1002 E: craigg@aespump.co.za W: www.aespump.co.za MULTISTAGE PUMPS

APE Pumps T: +27 (0) 11 824-4810 F: +27 (0) 11 824-2770 E: info@apepumps.co.za W: www.apepumps.co.za

AESPUMP SA T: +27 (0) 17 631-1003 F: +27 (0) 17 631-1002 E: craigg@aespump.co.za W: www.aespump.co.za

C.R.I Pumps S.A. (Pty) Ltd T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za

AESPUMP SA

C.R.I Pumps S.A. (Pty) Ltd T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za

APE Pumps T: +27 (0) 11 824-4810 F: +27 (0) 11 824-2770 E: info@apepumps.co.za W: www.apepumps.co.za

Pipes, Pumps and Valves Africa - Jan/Feb 2021

PUMPS SELF PRIMING PUMPS

C.R.I Pumps S.A. (Pty) Ltd T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za

KSB (Pty) Ltd C.R.I Pumps S.A. (Pty) Ltd T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za

Sulzer Pumps (South Africa) (Pty) Ltd T: +27 (0) 11 820 6000 F: +27 (0) 11 820 6206 E: CSSEnquiries@sulzer.com W: www.sulzer.com PLUNGER PUMPS

VERTICAL SPINDLE PUMPS

T: +27 (0) 11 876-5600 F: +27 (0) 11 822-2013 E: info-za@ksb.com W: www.ksb.com

Stewarts & Lloyds (Pty) Ltd Integrated Pump Rental T: +27 (0) 11 894-2906 E: admin@pumprental.co.za W: www.pumprental.co.za

T: +27 (0) 031 274-8555 +27 (0) 10 010-0144 F: +27 (0) 31 205-4332 +27 (0) 11 822-2868 E: sales@hawkpumps.co.za W: www.hawkpumps.co.za PISTON PUMPS

Hawk High Pressure Pumps T: +27 (0) 031 274-8555 +27 (0) 10 010-0144 F: +27 (0) 31 205-4332 +27 (0) 11 822-2868 E: sales@hawkpumps.co.za W: www.hawkpumps.co.za POSITIVE DISPLACEMENT PUMPS

T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za

T: +27 (0) 11 873-8620 F: +27 (0) 11 825-1401 E: wme@mweb.co.za W: www.versaflo.co.za

T: +27 (0) 17 631-1003 F: +27 (0) 17 631-1002 E: craigg@aespump.co.za W: www.aespump.co.za

TRASH PUMPS

APE Pumps

Integrated Pump Rental

C.R.I Pumps S.A. (Pty) Ltd

T: +27 (0) 11 894-2906 E: admin@pumprental.co.za W: www.pumprental.co.za

T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za

SUBMERSIBLE PUMPS

C.R.I Pumps S.A. (Pty) Ltd T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za

VACUUM PUMPS

Integrated Pump Technology

Sulzer Pumps (South Africa) (Pty) Ltd

WASTEWATER PUMPS

T: +27 (0) 11 824-4810 E: info@pumptechnology.co.za W: www.pumptechnology.co.za

AESPUMP SA Integrated Pump Rental T: +27 (0) 11 894-2906 E: admin@pumprental.co.za W: www.pumprental.co.za

T: +27 (0) 11 824-4810 F: +27 (0) 11 824-2770 E: info@apepumps.co.za W: www.apepumps.co.za

T: +27 (0) 11 820 6000 F: +27 (0) 11 820 6206 E: CSSEnquiries@sulzer.com W: www.sulzer.com

VERTICAL SUMP PUMPS T: +27 (0) 17 631-1003 F: +27 (0) 17 631-1002 E: craigg@aespump.co.za W: www.aespump.co.za

VERTICAL TURBINE PUMPS

AESPUMP SA Walter Meano Engineering VersaFlo VSE Pumps

Hawk High Pressure Pumps

T: +27 (0) 11 873-8620 F: +27 (0) 11 825-1401 E: wme@mweb.co.za W: www.versaflo.co.za

T: +27 (0) 11 917-0778 F: +27 (0) 11 917-0769 E: peterk@sltrading.co.za W: www.stewartsandlloyds.co.za

SLURRY PUMPS

C.R.I Pumps S.A. (Pty) Ltd

Walter Meano Engineering VersaFlo VSE Pumps

KSB (Pty) Ltd

KSB (Pty) Ltd T: +27 (0) 11 876-5600 F: +27 (0) 11 822-2013 E: info-za@ksb.com W: www.ksb.com WELL PUMPS

T: +27 (0) 11 876-5600 F: +27 (0) 11 822-2013 E: info-za@ksb.com W: www.ksb.com

Unique Engineering T: +27 (0) 11 826-6111 F: +27 (0) 11 826-6162 E: sales@uniqueeng.co.za W: www.uniqueeng.co.za 44

Integrated Pump Technology T: +27 (0) 11 824-4810 E: info@pumptechnology.co.za W: www.pumptechnology.co.za

Pipes, Pumps and Valves Africa - Jan/Feb 2021

KSB (Pty) Ltd T: +27 (0) 11 876-5600 F: +27 (0) 11 822-2013 E: info-za@ksb.com W: www.ksb.com

VALVES BALL VALVES

KV Controls (Pty) Ltd C.R.I Pumps S.A. (Pty) Ltd T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za

Pleix-Quip T: +27 (0) 11 736-4994 F: +27 (0) 11 736-6130 E: tiaans@pleixquip.co.za W: www.pleixquip.co.za

T: +27 (0) 16 100-4592 E: fred@kvcontrols.co.za W: www.kvcontrols.co.za

Pleix-Quip T: +27 (0) 11 736-4994 F: +27 (0) 11 736-6130 E: tiaans@pleixquip.co.za Web: www.pleixquip.co.za

C.R.I Pumps S.A. (Pty) Ltd T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za

CONTROL VALVES

Allmech (Pty) Ltd T: +27 (0) 11 849-2731/33 C: +27 (0) 82 853-2764 E: lionelm@allmech.co.za W: www.almech.co.za

KV Controls (Pty) Ltd T: +27 (0) 16 100-4592 E: fred@kvcontrols.co.za W: www.kvcontrols.co.za

Mine Track & Tools (Pty) Ltd T: +27 (0) 11 412 4536/1665 E: info@minetrack.co.za W: www.minetrack.co.za GATE VALVES

Bray Controls Africa C.R.I Pumps S.A. (Pty) Ltd

T: +27 (0) 10 007-3222 E: sales@bray.com W: www.bray.com

T: +27 (0) 11 453-7537 E: valconsa@iafrica.com W: www.valcon.co.za

CHECK VALVES

BUTTERFLY VALVES

Bray Controls Africa

Valcon Valve & Controls

T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za

T: +27 (0) 10 007-3222 E: sales@bray.com W: www.bray.com

Invincible Valves (Pty) Ltd T: +27 (0) 11 822-1777 F: +27 (0) 11 822-3666 E: enquiries@invalve.co.za W: www.invalve.co.za

Macsteel Fluid Control Enserve Engineering Services (Pty) Ltd T: +27(0) 16 971 3385 F: +27(0) 16 971 3935 E: mail@enserve.co.za W: www.enserveonline.co.za

T: +27 (0) 82 495 2772 C: +27 (0) 11 383 4000 E: Rowan.Blomquist@macfluid.co.za W: www.macsteel.co.za DIAPHRAGM VALVES

KV Controls (Pty) Ltd T: +27 (0) 16 100-4592 E: fred@kvcontrols.co.za W: www.kvcontrols.co.za

Invincible Valves (Pty) Ltd Enserve Engineering Services (Pty) Ltd T: +27(0) 16 971-3385 F: +27(0) 16 971-3935 E: mail@enserve.co.za W: www.enserveonline.co.za

Invincible Valves (Pty) Ltd T: +27 (0) 11 822-1777 F: +27 (0) 11 822-3666 E: enquiries@invalve.co.za W: www.invalve.co.za

T: +27 (0) 11 822-1777 F: +27 (0) 11 822-3666 E: enquiries@invalve.co.za W: www.invalve.co.za

T: +27 (0) 82 495 2772 C: +27 (0) 11 383 4000 E: Rowan.Blomquist@macfluid.co.za W: www.macsteel.co.za

Kaytar Valves (Pty) Ltd Kaytar Valves (Pty) Ltd T: +27 (0) 21 987-8292 C: +27 (0) 81 555-5288 E: clinton@kaytarvalves.co.za W: www.kaytarvalves.co.za

KSB (Pty) Ltd T: +27 (0) 11 876-5600 F: +27 (0) 11 822-2013 E: info-za@ksb.com W: www.ksb.com

Macsteel Fluid Control T: +27 (0) 82 495 2772 C: +27 (0) 11 383 4000 E: Rowan.Blomquist@macfluid.co.za W: www.macsteel.co.za

Pleix-Quip T: +27 (0) 11 736-4994 F: +27 (0) 11 736-6130 E: tiaans@pleixquip.co.za W: www.pleixquip.co.za

Macsteel Fluid Control

T: +27 (0) 21 987-8292 C: +27 (0) 81 555-5288 E: clinton@kaytarvalves.co.za W: www.kaytarvalves.co.za

KNIFE GATE VALVES

C.R.I Pumps S.A. (Pty) Ltd T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za

KSB (Pty) Ltd T: +27 (0) 11 876-5600 F: +27 (0) 11 822-2013 E: info-za@ksb.com W: www.ksb.com

Pipes, Pumps and Valves Africa - Jan/Feb 2021

VALVES

ADVERTISE WITH US TODAY !!

Mine Track & Tools (Pty) Ltd T: +27 (0) 11 412 4536/1665 E: info@minetrack.co.za W: www.minetrack.co.za PINCH VALVES

CMY

KV Controls (Pty) Ltd

T: +27 (0) 16 100-4592 E: fred@kvcontrols.co.za W: www.kvcontrols.co.za

Valcon Valve & Controls T: +27 (0) 11 453-7537 E: valconsa@iafrica.com Web: www.valcon.co.za

ACTUATORS

VALVE RECONDITIONING

Kaytar Valves (Pty) Ltd Enserve Engineering Services (Pty) Ltd T: +27(0) 16 971 3385 F: +27(0) 16 971 3935 E: mail@enserve.co.za W: www.enserveonline.co.za

Mine Track & Tools (Pty) Ltd T: +27 (0) 11 412 4536/1665 E: info@minetrack.co.za W: www.minetrack.co.za ACCESSORIES

C.R.I Pumps S.A. (Pty) Ltd T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za

T: +27 (0) 21 987 8292 C: +27 (0) 81 555 5288 E: clinton@kaytarvalves.co.za W: www.kaytarvalves.co.za PIPES

C.R.I Pumps S.A. (Pty) Ltd T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za HOSES

C.R.I Pumps S.A. (Pty) Ltd T: +27 (0) 11 805-8631 F: +27 (0) 11 805-8630 E: cri-za@crifluidsystems.com W: www.cripumps.co.za

Pipes, Pumps and Valves Africa - Jan/Feb 2021

+ 27 (0) 83 281 5761 info@pumpsandvalves.co.za www.pipespumpsandvalves.co.za

Connecting Global Competence

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