Commercial Products Working Principles Information Pack
CALMAG LIMITED : CUSTOMER SERVICES 01535 210320 : EMAIL SALES@CALMAGLTD.COM : WEB WWW.CALMAGLTD.COM
COMMERCIAL PRODUCTS : WORKING PRINCIPLES INFORMATION PACK
Welcome
This Information Pack has been produced with the branch and customer in mind. Effective, easy to understand information which will make your life simpler and enable you to sell more products. This pack can also be used in conjunction with our Water for Home brochure, offering a more indepth guide to product information. As a stand alone document the pack will help you provide useful and practical data with confidence. This Information Pack specifically deals with industrial or commercial environments, ask for our Water for Home brochure which covers smaller applications.
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CALMAG HELP:DESIGNED TO CONTAIN RELEVANT INFORMATION TO A SUBJECT OR BE A PROMPT TO CALL OUR CUSTOMER SERVICE AND TECHNICAL SUPPORT LINE.
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WATER ~ SOURCES AND TYPICAL CHARACTERISTICS...
WATER FOR BUSINESS...
The Water Cycle. Approximately 70% of the earth's surface is covered with water, most of which is sea water. Most of human requirement is fresh water containing a fraction of the minerals found in sea water.
Concerns over the quality of water in the business circle has dramatically increased the demand for various types of treatment.
Fortunately a natural cycle occurs, resulting in fresh water distribution over most of earth's surface. Sun evaporates sea water. Water vapour cools & condenses as clouds. Clouds become saturated and shed condensed water as rain. Rain flows over earth's surface to form rivers, streams, lakes or into the surface to form wells, springs and aquifers. These two types of water source are called surface & sub~ surface supplies. All waters return eventually to the sea and the cycle starts again.
Your water will normally contain chlorine and varying amounts of dissolved minerals including Calcium (limescale), Magnesium, Sodium, Chlorides and Sulphates. It is also not uncommon to find traces of Iron, Manganese, Copper, Aluminium, Nitrates, Insecticides and Herbicides. Within industry, water related problems accounts for millions of pounds spent on downtime and maintenance, whereby associated problems can be rectified by installing equipment to help preserve and improve the life of equipment such as commercial boilers and plant machinery. THE FOLLOWING INFORMATION CONTAINED IN THIS DOCUMENT WILL HELP GENERAL MANAGERS, MAINTENANCE PERSONNEL AND TECHNICANS DECIDE ON THE APPROPRIATE ACTION.
PRECIPITATION CONDENSATION
TRANSPIRATION GRANITE EVAPORATION
Sea
River
LIMESTONE
Lake
INFILTRATION
ACCUMULATION PERCOLATION
GROUND WATER
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WATER HARDNESS
OVERVIEW...
There are two types of hardness. Temporary hardness, which comes out of the water when it’s heated and permanent hardness which is unaffected by heating. Measuring the extent of water hardness and the effect on appliance efficiency is the key to providing the appropriate solution.
Most water heating appliances such as calorifiers, direct fired gas water heaters or plate heat exchangers, will require scale control if the hardness is 100 ppm or above.
DEGREE’S CLARK
PPM (milligram per ltr.)
0 1 2 3
0 14 29 43
In general, if the water is to be used for washing and cleaning processes or to produce steam, then water softening or Calcium treatment will be required with either CalSimplex, CalDuplex ot CalCTU units.
4 5 6
57 71 86
7 8 9 10
100 114 129 143
11 12 13
157 171 186
SOFT HARD LEVEL
SOFT
MODERATELY SOFT
SLIGHTLY HARD
MODERATELY HARD
14 15 16 17 18 19 20
200 214 229 243 257 271 286
HARD
21 25 29
300 357 414
VERY HARD
30 40 50
429 571 714
EXTREME
MORE DETAILED INFORMATION ON SCALE POTENTIAL AND TYPICAL WATER TREATMENT REFERENCES ON THE FOLLOWING PAGES.
For other hot water systems, where the priority is to prevent scale formation, but to help keep the system maintenance to a minimum, a physical scale inhibitor, such as the Calmag Electromag unit may be required. Laboratories or other departments which use water for cooling processes or directly for treatment processes may require scale control or various levels of filtration (CalFilter). ITU, Transplant or other wards containing patients with suppressed immune systems may require additional water treatment to reduce the risk of infection. This could be the CalUltra UV Disinfection System to feed all cold water services feeding taps, showers, baths and drinking water outlets. On the incoming cold water mains supplies where there is evidence of silt, grit and rust particles, it is good practice to filter the water to 5 micron with a CalMax S Filtration Unit to prevent build up of this material in storage tanks and pipework. This will not only assist in preventing corrosion damage, but also eliminate growth of bacteria.
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WATER HARDNESS Appliance/System
Water Treatment
Dishwasher/Glasswasher
Water Softener if over 80-90 ppm.
Steamer/Bain Marie
Water Softener if over 50-60 ppm.
Combination Oven
Water Softener or CalCTU if over 50 ppm.
Vending Machines/Ice Maker
Scale Inhibitor, filter with resin cartridge or and activated carbon cartridge depending on hardness level and whether there is a requirement to improve taste of water.
Tea Boilers
Point of use Electronic Scale Inhibitor CalTronic or CalCTU if water hardness is over 80 ppm.
Drinking Water Outlets
Possibly Water Filters for vending machines or drinking water fountains.
Water Chiller/Cooler
Mains fed coolers preferred for safe chlorinated water (rather than bottled water) with filtration and UV water disinfection if required.
Laundries/Washing Machines
Water Softener if over 90-120 ppm especially if high levels of water are used.
Sluices and Bedpan washers
Water Softener if over 90-120 ppm especially if high levels of hot water are used.
Autoclaves and Sterilisation Equipment
Water Softener if over 50 ppm.
Instrument washers
Water Softener if over 80-90 ppm.
Endoscopy
Endoscope washers require purified water softening, filtration below 1 micron or reverse osmosis and possibly UV Treatment.
Dialysis
Require purified water usually reverse osmosis possibly with additional UV Treatment.
Bathrooms/Sanitary Fittings and Urinals
Scale control recommended if hardness is over 100-120 ppm, Scale Inhibitor or Water Softener.
Calorifiers/ Direct Fired Gas Water Heaters
Water Softener or Scale Inhibitor required if over 120-140 ppm.
Plate Heat Exchangers
Water Softener or Scale Inhibitor required if over 80-100 ppm.
Small Point of Use Water Heaters, Electric Showers and Small Hot Water Cylinders
In-Line Scale Inhibitor on cold feed to appliance, such as CalCombi or CalPhos.
Air Conditioning and Cooling Towers
Water Softening if water hardness above 100 ppm or as directed by manufacturer.
Steam Boilers
Water Softening if over 20 ppm.
Electrode Boilers (Vapac type) Steam Humidifiers (Calomax)
Water Softening or Scale Inhibitors if over 100 ppm ~ refer to manufacturers recommendations.
Ambient Temperature High Pressure Mist Type Humidifiers
Water Filtration and UV Treatment, sometimes also water softening.
SCALE THICKNESS (mm)
AVERAGE EFFICIENCY LOSS
0.4 0.8 1.6 3.2 4.8 6.4 9.5 12.7
4% 9% 11% 25% 30 % 40 % 55 % 70 %
SCALE POTENTIAL 100 ppm will give 1lb/0.5 kg scale potential per 1,000 gallons/4546 litres of water. EXAMPLE Hardness level = 300 ppm Water used = 2,000 gallons/9092 litres TOTAL SCALE POTENTIAL 3lb x 2 = 6lb scale per day 1.5kg x 2 = 3 kg scale per day SCALE POTENTIAL IS GREATEST... The harder the water. The hotter the water. The greater quantity used.
TYPICAL SCALE BUILD UP ON UNTREATED PIPEWORK IN A HARD WATER AREA
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SCALE INHIBITORS: HOW THEY WORK... KEY BENEFITS WATER NORMALLY CONTAINS IONS AND IONS ~ AS WE KNOW OPPPOSITES ATTRACT. AS WATER IS HEATED THESE POSITIVE AND NEGATIVE IONS COME TOGETHER TO FORM LIMESCALE.
THROUGH A SCALE INHIBITOR WE INDUCE A SINGLE POLARITY WHEREBY THE AND IONS, BOTH BECOME WHICH AS WE KNOW TWO NEGATIVES REPEL WHICH PREVENTS THE LIMESCALE FORMING.
SCALE INHIBITORS DO NOT EFFECT THE WATER HARDNESS LEVELS (PPM) ~ THEY JUST REDUCE THE LIMESCALE FORMING, THROUGH HEATED WATER.
• ECONOMICAL TO OPERATE • NO MAINTENANCE • COMPETITIVE INITIAL COST • NO CHEMICALS USED • WATER REMAINS POTABLE • EASY TO INSTALL • STOPS HARD SCALE FORMING Will prevent scale formation within... Calorifiers Direct gas fired water heaters. Copperfin water heaters. Plate heat exchangers. Combination boilers. Thermal store boilers. Electric showers. Water coolers. Ice makers. Typical users of Scale Inhibitors... Local Authorities. Schools. Housing Associations. Sheltered Housing. Leisure Centres. Prisons. Nursing Homes. HM Forces accommodation. Factories.
TYPES OF COMMERCIAL SCALE INHIBITORS Electromagnetic Most powerful conditioning, used for industrial applications where large flowrates are needed. Removes existing scale. Magnetic
Mainly domestic applications.
Electronic
Light commercial and domestic applications. Removes existing scale.
Electrolytic
Light commercial and domestic applications.
Polyphosphate
Commercial and domestic applications. High maintenance cost. (coats pipes).
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SCALE INHIBITORS: TYPICAL INSTALLATION DIAGRAMS
FLOW DIRECTION SCALE INHIBITOR
MAINS SUPPLY
ISOLATING VALVE
PUMP LOOP CONFIGURATION MAINS SUPPLY
SCALE INHIBITOR
TANK CONFIGURATION
MAINS SUPPLY OVERFLOW
SCALE INHIBITOR DOWN SERVICE
KEY: ISOLATING VALVE
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WATER SOFTENERS: HOW THEY WORK... KEY BENEFITS Hard water containing Calcium and Magnesium
Waste water containing Calcium and Magnesium
• CALCIUM REMOVED FROM WATER PREVENTS SCALE • REDUCES DETERGENT USAGE • SOFTER LAUNDRY AS THERE IS NO CALCIUM BUILD UP IN FABRICS
KEY Ion Exchange Resin
• SUITABLE FOR STEAM AND HIGH TEMPARTURE APPLICATIONS
Magnesium ions Calcium ions Sodium ions Ion Exchange Resin with Sodium attached. Ion Exchange Resin with Calcium and Magnesium attached.
Softened water containing Sodium
Brine solution containing Sodium
Hard water passes though a control unit into the resin vessel. Calcium and Magnesium, constituents of water hardness, are attached to the Sodium saturated resin beads, usually sulfonated polystyrene. This simultaneously releases Sodium ions and water hardness is elminated. The process is called ion exchange. When the resin becomes saturated with Calcium and Magnesiu it’s recharged by passing a salt solution (brine) through the resin.
Types of Applications... Dishwashers. Glasswashers. Combi ovens. Baking ovens with steam injectors. Washing machines. Autoclaves. Sluices. Bedpan washers. Steam boilers. Humidifiers. Cooling towers. Water heating equipment. Typical users of Water Softeners... Hospitals. Hotels. Restaurants. Nursing Homes. Carwashes. Commercial Kitchens. Laundries. Factories. Bakeries. Food Processing Plants.
KEY WATER SOFTENER PARAMETERS • Water Hardness. • Litres of water used per day. • Max flow rate • Fill rate to tank requirements.
ASK FOR OUR DETAILED QUESTIONNAIRE FOR A FULL LISTIING OF CONSIDERATIONS
ASK FOR A FREE SITE SURVEY
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WATER SOFTENERS: TYPICAL INSTALLATION DIAGRAMS LAYOUT FOR CALSIMPLEX WATER SOFTENER FLOW DIRECTION
POTABLE SUPPLY
INCOMING SUPPLY WITH MINIMUM PRESSURE 1.8 BAR
DOUBLE CHECK VALUE
BY PASS VALUE
I.V.
I.V.
OVERFLOW
BRINE WATER
DOWN SERVICE
DRAIN: TO BE WITHIN 2 METRES OF SOFTENER
HEAD
COLD WATER STORAGE TANK BOOST SUPPLY KEY BY PASS VALVE DOUBLE CHECK VALUE
POWER SUPPLY: TO BE WITHIN 2 METRES OF SOFTENER
COLD HOT WATER WATER
ISOLATING VALVE
CALSIMPLEX: SOFTENER INSTALLATION
CALDUPLEX: SOFTENER INSTALLATION SOFTENED WATER OUT
SOFTENED WATER OUT
ISOLATING VALVES
ISOLATING VALVES SAMPLE TAP
SAMPLE TAP DOUBLE CHECK VALVE
DOUBLE CHECK VALVE
CONTROL HEAD
HEAD
PRESSURE VESSEL
DUPLEX ADAPTOR
DRAIN
BRINE TANK
HEAD
DRAIN
SAMPLE TAP
SAMPLE TAP
STOP COCK
STOP COCK
WATER IN
WATER IN
TWIN RESIN VESSEL BRINE TANK
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HOUSEHOLD
WATER SOFTENERS
ION EXCHANGE WATER SOFTENER CAPACITY COMPARISONS
CALMAG SOFT WATER SOFTENER Capable of managing 99% of all UK domestic household demands.
Aquadial High-Tec: High-Tec Meter: Micro: Prismertec:
11 litres 11 litres 5 litres 11 litres
Standard unit has a maximum flow rate of 50 litres per minute (3 m3/hr). Full bore installation kit as standard. Most compact, universal fitting high flow unit on the market.
Liff 2005 T: 2010 T: 2010 V: 2015 V:
5 litres 10 litres 10 litres 15 litres
Easy to install and maintain, designed to make efficient use of space.
Waterslide MC350 Eco-flo: 14 litres MC350 High-flo: 14 litres
Tapworks Ultra 9: AD11: AD15:
9 litres 11 litres 15 litres
Monarch Mini Aqua: Mini Aqua XC: LPS meter: Midi meter:
11 litres 15 litres 11 litres 15 litres
Unit Dimensions
NOTE: SUITABLE FOR ALL TYPES OF SYSTEMS, INCLUDING COMBI - PRESSURIED - DIRECT HIGH FLOW - UNVENTED AND MEGAFLOW.
Height
480mm
Width
250mm
Depth
440mm
WATER REGULATION ADVISORY SCHEME
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WATER FILTERS: HOW THEY WORK...
KEY BENEFITS
WATER FILTERS NEED ONLY TO BE THOUGHT OF AS EFFICIENT SIEVES. THEY ARE DESIGNED TO REMOVE UNWANTED PARTICLES FROM WATER AND DO NOT ADD ANYTHING TO IT. DIFFERENT TYPES OF CARTRIDGE TAKE OUT DIFFERENT CONTAMINENTS.
WATER FILTRATION KEY PARAMETRES Sizing Based on flow rate required Pipe diameter Particle size to be removed Contaminant to be removed Incoming water pressure Incoming water temperature Installation Adequate isolating valves Drain point after filter Pressure differential gauges Maintenance Replace cartridges at least every 6 months Clean housing internally if badly contaminated Flush water to drain after fitting new cartridges
FOR WATER FILTERS, REFER TO OUR WATER FOR HOME BROCHURE, CONTAINING A FULL RANGE FOR HARD AND SOFT WATER AREAS.
• REMOVE DISCOLOURATION & SUSPENDED SOLIDS • REMOVE BAD TASTES & ODOURS • EASY TO INSTALL & MAINTAIN • ADAPTABLE ~ WIDE VARIETY OF CARTRIDGES AVAILABLE FOR EACH HOUSING • REDUCE MAINTENANCE • REDUCE RISK OF BACTERIA • REDUCE EROSION DAMAGE OF PIPEWORK Applications... Private water supplies. Prior to UV disinfection. Incoming mains ~ whole building application. Film processing. Industrial processes. Laboratories. Brewing industry. Soft Drinks industry. Drinking water fountains. Vending machines. Typical buildings and users... Hotels, Bars and Pubs. Restaurants, Canteens. Laboratories. Hospitals. Offices. Food processors. Pharmaceutical industry.
Typical filter after 6 months average usage.
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WATER FILTERS: TYPICAL INSTALLATION DIAGRAMS ON FEED TO DRINKING WATER
ON FEED TO TANK OR BEFORE CALULTRA UNIT
ISOLATION VALVES
MAINS SUPPLY
FILTERED WATER
TO UV UNIT
DRAIN FOR FLUSHING AFTER CARTRIDGE REPLACEMENT
WATER FILTER UNIT FLOW DIRECTION
KEY: ISOLATION VALVES
WATER FILTERS & UV: TYPICAL INSTALLATION DIAGRAMS FROM COLLECTION AND SETTLEMENT TANKS
(NC) NORMALLY CLOSED
25 MICRON
5 MICRON
25 MICRON
5 MICRON
DRAIN POINT (NC)
BOOST JET (NC)
WATER FILTERS ULTRA VIOLET UNIT FLOW DIRECTION
KEY: ISOLATION VALVES
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ULTRA VIOLET DISINFECTION: HOW IT WORKS... The components in an Ultra Violet unit are quite straightforward. The heart of the system is the UV lamp (germicidal lamp) which is similar to a fluorescent tube. This tube produces an intensity of light sufficient to penetrate through to the DNA core of bacteria, viruses, fungi, protozoa and algae causing a molecular rearrangement which effectively halts any reproduction, rendering it ‘dead’. PRINCIPLES OF OPERATION 1 Water enters the UV chamber and flows into an annular space
between the quartz sleeve 2 and the outside chamber wall. 3 The water is exposed to the UV light from the mercury germicidal lamp 4 thereby disinfecting the micro-organisms and rendering it dead.
WATER IN
1 END CONNECTED TO MAINS POWER SUPPLY
• FAST: SINGLE PASS TREATMENT • EFFECTIVE: HIGH OUTPUT ENSURES EFFECTIVENESS • ECONOMICAL: LOW POWER CONSUMPTION AND MAINTAINENCE • SAFE: NO HAZARDOUS CHEMICALS USED OR TO BE STORED AND WATER IS SAFE TO DRINK. • AUTOMATIC: NO DOSING OR TIMING REQUIRED. • ENVIRONMENTALLY FRIENDLY DOES NOT ALTER WATER CHEMISTRY ~ NO CHANGE TO Ph, TASTE OR COLOUR WITH NO HARMFUL WASTE PRODUCED. Typcial Applications... Private water supplies, springs, wells, rivers and lakes serving...
3
2
KEY BENEFITS
4
WATER OUT
UV DISINFECTION DESTROYS WATER~BORNE BACTERIA & VIRUSES.
Dairies and Farms. Guest Houses. Camp and Caravan Sites. Hotels and Golf Clubs. Youth Hostels, Country Houses. Rainwater collection and utilisation systems. Legionella Control.. On cold feed to low temperature, hot water systems, feeding showers, etc. Laboratories. Pharmaceuticals. Food Processing. Irrigation. Hydroponics. Market Gardening. Fish Ponds and Farming Water Bottling Drinks Manufacturing
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ULTRA VIOLET DISINFECTION: When specifying products for bathing, showering and washroom facilities in schools, hospitals and other healthcare facilities, safety of the user has to be the prime consideration; especially to combat legionella. Together with this, England and Wales are served by some 100,000 private water supplies and 38,000 in Scotland where the water is drawn from a well, spring, river or lake. Many of these supplies will not have received prior treatment at a water works which means that the water is unlikely to meet the standards set the the Private Water Supplies Regulators. In the above cases, water disinfection by Ultra Violet light is the easiest and most cost effective option to those responsible for the Supply. UK Physical Water Conditioning Association has called for minimum hardness levels to be set,along with maximum sodium levels and limitations of the potential for the growth of microbes.
Exposed water supply
This illustration shows how an unprotected water supply can provide water for areas of hygenic importance in an environment used by multiple persons.
KEY INFORMATION THE FOLLOWING CONDITIONS EFFECT THE GROWTH OF LEGIONELLA • Water temperatures in the range 20 to 45º C. It does not survive at temperatures above 60ºC. • Sediment, sludge, scale and organic matter can act as a source of nutrients, as can other organisms in water such as other bacteria and algae. • The slime, or biofilm, that often forms on the surface of water, provides favourable conditions for growth. • Biofilms, sludge, corrosion etc. can adversely affect some treatment methods. • Systems that eject water as an aerosol or as droplets pose the biggest risk, as water in this form can be more easily inhaled. Typical Areas of Risk... Water systems incorporating cooling towers and condensers. Hot- and cold-water services. Spray humidifiers that create a spray of water droplets and in which the water temperature is likely to exceed 20ºC. Spa baths and pools in which warm water is deliberately agitated and recirculated.
Typical workplace environment
Other plant and system containing water which is likely to be in the temperature range 20 to 45ºC and which may release a spray or aerosol during operation or when being maintained may also prevent risk.
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REVERSE OSMOSIS: HOW IT WORKS Reverse Osmosis is the ‘reversal of the natural phenomenon of osmosis, brought about by the application of hydraulic pressure, greater than the osmotic pressure in water, containing dissolved solids cause the molecules of water to flow through the membrane away from the dissolved substances’ THE PROCESS OF REVERSE OSMOSIS REMOVES 91 ~ 99% OF TOTAL DISSOLVED SOLIDS FROM YOUR WATER MAKING IT THE MOST EFFECTIVE FORM OF WATER FILTRATION. The movement of water from soils into plant roots is one example of osmosis at work in nature. Where as filtration is the process of removing contaminants from water, Reverse Osmosis is the process of removing water from contaminants. KEY BENEFITS • Removes 91-99% of all dissolved solids from water. • Provides water of extreme purity for many specialist applications. • Can be the simplest way to remove certain contaminants from water. • Domestic, Commercial and Industrial systems available.
THE FIVE STAGE REVERSE OSMOSIS
IMPURITIES
1
5 micron sediment pre filter
Dirt 5 micron
2
Carbon block pre filter chlorine
Chlorine
3
Carbon block pre filter chlorine
Chlorine
4
RO membrane
Total Dissolved Solid
5
Carbon post filter - Polishing filter
Pure Water
ELEMENTS REMOVED CONTAMINANTS
REMOVED %
Algae Aluminium Antimony Arsenic Asbestos Fibres Bacteria Barium Benzene Beryllium Cadmium Calcium Chlorides Chlorine Chromium Copper Cysts Dichloramine Fluorides Herbicides Iron (soluble) Lead Manganese Magnesium Mercury Monochloramine Nickel Nitrates Odours Pesticides Phospate Potassium Radon Selenium Silver Sodium Sulphate THM's Total Hardness Total dissolves solids Total alkalinity Turbidity Viruses Zinc
98 98 96 98 99 98 99 90 99 99 97 97 99 99 99 99 92 98 99 98 99 98 98 96 94 98 98 99 99 98 86 95 90 98 98 98 99 98 94 91 98 98 99
Stage 1 Removal
Stage 2 Removal
Stage 3 Removal
Stage 4 Removal
Stage 5 Polishing filter
1
2
3
4
5
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REVERSE OSMOSIS: TYPICAL INSTALLATION DIAGRAM THE FIVE STAGES OF RO FILTRATION RO LUXE LAYOUT TO TOUCH TAP*
VESSEL SHUT OFF
DRAIN
POST FILTER
PRESSURISED STORAGE
LOW PRESSURE SWITCH
MAINS SUPPLY
SW5
FLOW CONTROLLER*
HIGH PRESSURE SWITCH
PRESSURE EQUALISER
RO MEMBRANE
PUMP
POWER IN 240V AC
C1
SW1 FLOW DIRECTION PIPE KEY
TYPICAL APPLICATIONS...
TYPICAL LOCATIONS...
Drinking water outlets. removing lead, nitrates, aluminium and copper Humification Systems. Kidney Dialysis. Endoscope and Instrument washers. Industrial Manufacturing and Washing Processes.
Laboratories. Hospitals. Factories. Food Processing. for nitrate removal Pharmaceutical Industry.
SECTION ONE SECTION TWO SECTION THREE FLOW CONTROLLER BYPASS NORMALLY IN CLOSED POSITION HOLE IN BASE OF TOUCH TAP PROVIDES AIR GAP TO PREVENT BACK SIPHONGE OF CONTAMINATED WATER
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OTHER PRODUCTS AVAILABLE
CONTACT CALMAG...
AT CALMAG WE ALSO SUPPLY ADDITIONAL WATER TREATMENT PRODUCTS Calcium Treatment Units. For potable water in use in Tea boilers, Coffee machines, Vending machines, Combination ovens, Baking ovens, Low use steam generating equipment, Very high temperature appliances using water for cooling e.g. incinerators, where water softening is not applicable. Water Coolers. To provide a continuous supply of chilled water, to replacing the problem of using bottled water in... • Hotels • Conference Centres • Health Clubs • Leisure Centres • Restaurants • Canteens and Offices • Factories • Hospitals and Nursing Homes • Golf Clubs Filters. We also supply a range of effective mineral removal filters...
Calmag Limited Unit 4~6 · Crown Works Bradford Road Sandbeds · Keighley West Yorkshire BD20 5LN COMMERCIAL SALES 01535 210329 TECHNICAL SUPPORT 01535 210349 DOMESTIC SALES 01535 210320 FACSIMILE 01535 210321 EMAIL sales@calmagltd.com WEBSITE www.calmagltd.com
• Iron Removal Filters • Manganese Removal Filters • Carbon Filters • Backwashing Sediment Filters • De~ mineralisers • All Resin & Filter Medias
CALMAG, FOR ALL YOUR WATER TREATMENT NEEDS...
WATER REGULATION ADVISORY SCHEME
REMEMBER
don’t guess...
ASK!
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