Pipes and Pumps Solutions

“For know-how, ingenuity, advanced fabrication equipment and highly trained staff to help you master current and future challenges – on time, within budget and compliant with international industry standards, CHHPS are

Röhrenwerk Kupferdreh Carl Hamm GmbH (RKCH) is a 4th Generation family-run business – Carl Hamm PPS (CHPPS) in South Africa has been in existence since 2016, but its product has been used in Acid Mine Drainage in Southern Africa since 2009.

Carl Hamm PPS focuses on water abstraction, and well development with Blue Chip Supplier - Stuwa as well as open-pit and underground mining. ICHPPS is a competent partner in ensuring added value for specific customer needs - from conceptual planning to professional production and delivery.

CHPPS provides differentiated products, advisory expertise and best-ofbreed training to plan, install and assure the efficient running of client dewatering operations. It also offers competitively priced virtual project planning assistance - with everything from large bulk water flow systems to closed, and even flooded mine dewatering. Its modern production equipment, vast knowledge of deep well and flooded mine dewatering applications, competent personnel, extensive training and advanced support technologies has positioned CHPPS time and again as the preferred piping partner for leading industries worldwide.

Top among CHPPS’s specialist services to the ever-growing market are dewatering and water abstraction from deep wells. Without a doubt, CHPPS has a vertical free-hanging flangeless high-pressure pipe system and expertise in dewatering flooded mines. The piping can also be used for batching of shotcrete and emulsions. CHPPS also has Turnkey Project Office Managers in full control and accountability for site safety files, offering a one-stop-shop and cost savings for specialist services such as acid mine drainage, pumps, drilling and pipelines, well construction, borehole sinking and geotechnics divisions. Key among the benefits of this system is that it is free hanging, so it can be installed from the surface at reasonable lead times.

However, premature failure of systems can be encountered if proper quality systems are not adhered to and applied to every portion of the installation.

Advanced centrifugal pumps

Carl Hamm PPS continues to collaborate with top industry players like - Düchting Pumpen - specialists in the field of advanced centrifugal pumps for use in multiple applications such as in the desalination reverse osmosis industry, flue gas desulphurization industry, mining industry, and the chemical pigment industry – producing single-stage and multi-stage centrifugal pumps ideal for almost every application where the transportation of water plays a role – with Carl Hamm PPS serving as the local distributor.

The multistage centrifugal pump is in ring-section design. Its flanges are positioned at 90 degrees increments; and the shaft sealing is supported by a stuffing box or mechanical seal, with an axial thrust compensation driven by individually balanced impellers. Enticingly, its design is tailored for a 4-pole speed, with reduced life-cycle costs. It also hosts oil-lubricated bearings, with a closed impeller and threedimensionally curved blades with the option of having it fixed with the fitting key.

Available tailor-made solutions include: adaptable pump dimensions; single or double inlet suction casing; discharge flanges –available on intermediate stage castings; and options to drive from one or both shaft ends.

The multistage centrifugal pump bears a pump size of DN 32 to DN 300 (1 14” to 12”); maximum pressure of 40 bar (580 SI); a maximum flow of 2500 m3/h (11000 gpm); a total head of up to 400 m (1300ft); and rotating speed of up to 3600 rpm. With its retrofit design, Düchting pumpen plugand-play solutions help clients to avert problematic or critical pumps in their plants.

Certain products in the Duchting range can be applied in handling contaminated, chemically neutral or aggressive liquids with up to 10% solids – including main water drainage in mining, mine weather cooling, pressure boosting systems in industrial processes, water supply and water treatment plants, condensate production, mineral industry, as well as oil and gas applications.

High-quality well-construction technology

Carl Hamm PPS also partners with Stüwa Brunnedfilter Bohrbedarf, a leading manufacturer of high-quality wellconstruction technology. With extensive experience and expertise in the production of well screens in PVC/steel and stainless steel as well as geothermal products and drilling accessories, Stüwa makes for an excellent industry partner - with Carl Hamm PPS serving as the distributor for their products.

These range in size, from DN 50 to DN 250, with lengths up to 6 m. They have wall thickness from 2.0 to 6.0 mm longitudinally and are seam-welded according to EN 10217-7 - with seamless options, available upon request.

They are built with stainless steel1.4301 or 1.4571 S235JR (ST37-2). The plastic-coated steel serves as a basic material (approved for drinking waterrecommendation concerning the levels of polymers in drinking water) as recommended by the German Federal Department of Health. The S235JR (ST37-2) galvanized steel serves as a basic material, only suitable to a limited extent for drinking properties and suitability stainless steel of various qualities depending on the groundwater condition and temperature.

Further to this, this material is characterised by good ductility. It has similar properties as 1.4404 but with guaranteed resistance to intergranular corrosion due to an increased titanium content.

The flexible hose riser is manufactured in the extrusion procedure. It consists of polyurethane (PU) and is provided with a round woven polyester insert. In order to simplify the mounting of cables and immersion of electrode, a polyurethanereinforced belt has been vulcanized on the hose with loops.

Its benefits include the ability to use little space for storage and transport; plus quick assembly and disassembly, especially in the case of temporarily limited use Trinkwasserzulassung [German drinking water standards] according to KTW (plastics in contact with drinking water). The choice of connections largely depends on technical requirements and installation guidelines for construction sites.

Generally, it is resistant to a pH value up to approximately 4.5 in aggressive substances low in chloride. Its properties are similar to the 1.4301 but with lower carbon content, resulting in increased resistance to intergranular corrosion.

MULTISAFE® double hose-diaphragm pumps

FELUWA Pumps GmbH which only recently partnered with CHPPS – produce unique MULTISAFE® double hosediaphragm pumps which are perfect for handling aggressive and demanding media reliably and with little wear. The linear flow through the hose membrane and the valves ensures that the pumped medium does not come into contact with either the pump head or the hydraulic chamber.

It is a hermetically sealed, leakproof, reciprocating displacement pump that is aptly named a hose-diaphragm piston pump. It is characterised by an extraordinarily high technical and economic value.

With the FELUWA hose diaphragm piston pump, the commonly utilised principle of a flat diaphragm has been extended by the additional provision of a flexible hose-diaphragm. This allows the conveyed fluid to stay in direct contact with the inside of the hose-diaphragm and check valves only. The wet end and drive end of the pump are separated by a flat diaphragm and a hose diaphragm. The second actuation fluid between the flat and hose-diaphragm serves as a hydraulic coupling and safety aid for leak detection - with automatic control and compensation of the actuation fluid volume without an additional oil pump and control unit.

Even in the event of a hose-diaphragm failure, the secondary diaphragm ensures that the slurry will not enter the hydraulic drive end, so that operation can be maintained.

Mines normally service in-house. Unfortunately, this proves to be very costly and a liability, as it is not their core business. To help mining companies free up their resources for better use elsewhere, Carl Hamm is building a small service centre at its new premises to service its HPX pumps range when required by the client. The centre will be fully equipped with all the correct tools and personnel with specialised know-how to ensure that services are done in full and to the highest standard.

If you are looking for reliable equipment with minimal downtime, consider Carl Hamm PPS. While Carl Hamm generally exceeds customer expectations, it is cognisant of the fact that the needs of mining companies are constantly changing. And so, as a forward-thinking entity, Carl Hamm constantly adds new products or services to its range to address those needs.