THE CAUSE: When hard water is heated, the natural minerals contained in the water break down into insoluble crystals which deposit out within water systems as a scale on the hottest surfaces. These are usually heat transfer surfaces, hot water cylinders and pipework. This scale not only restricts water flow, but acts as a very effective insulant, reducing heat transfer and efficiency. More fuel is required to heat the water and, in extreme cases, boilers may not be able to reach the designed operating temperature.
Heavy scale deposits can also lead to localised overheating of heat transfer surfaces, resulting in premature failure of heating appliances. In certain hard water areas, the problem can be so severe that regular chemical descaling of equipment is necessary to maintain efficiency; the only alternative being to replace heat exchangers.
These expensive and inconvenient procedures can be overcome economically and simply by installing Ex-scalibur scale reducer in the water supply pipe.
THE SOLUTION: Install a simple and economical Ex-scalibur scale reducer in the water supply piping, and forget hard water problems.
• Once treated, water remains conditioned
• Automatic proportional dosing into water flow
• Uses safe, readily available food grade polyphosphate powder
• Chromium plated brass for durability
• Compact and easy to fit
• Ex-Scalibur D250 model may be mounted in vertical, horizontal or even angled pipework (see picture, right)
Ex-Scalibur units inhibit scale deposition by dispensing minute quantities (4 parts per million) of polyphosphates into the water, in proportion to the flow of water. The hardness salts are modified in character and remain suspended in the water, passing through the system harmlessly without forming scale deposits.
As well as preventing scale formation, the polyphosphate forms a microscopic film on internal surfaces, protecting them from rusting and corrosion.
Since the natural minerals are not removed from the water, Ex-Scalibur does not soften water.
The amount of polyphosphate blended into the water is controlled by the venturi action of the Ex-Scalibur, which matches the treatment to the flow of water through the Ex-Scalibur.
GELPHOS P polyphosphate powder is a blend of food grade polyphosphates and phosphates suitable for all hard water. It is completely safe and is tasteless, odourless and colourless.
The technology has been proven and accepted for many years within the water treatment industry.The D250 standard model is supplied with one rapid refill drop-in cartridge of GELPHOS P, sufficient to treat approximately 15,000 litres of water, whilst the D250 Value Pack includes eight rapid refill cartridges.
The frequency of refilling will depend on water consumption. As a guide, the domestic D250 will require refilling every 3 months when used to protect an individual boiler, more frequently if used to treat a complete household water system.
Technical Data
D250 domestic
D600 commercial
D700 commercial
Maximum working pressure:
10 bar
10 bar
10 bar
Maximum temperature of water supply
30°
30°
30°
Maximum ambient temperature:
40°
40°
40°
Connections (both female)
1/2" BSP
1" BSP
1" BSP
Maximum rated flow (lt/hour)
1,500
5,800
5,800
Pressure drop at rated flow:
0.25 bar
0.25 bar
0.25 bar
Polyphosphate content of bowl:
80g
500g
500g
Volume of water treated
(full bowl):
15,000 lt
120,000 lt
120,000 lt
Height:
15cm
24cm
24cm
Width between inlet & outlet:
6cm
11cm
13cm
Gelphos P included with pack
1 cartridge
500g powder
500g powder
Ex-Scalibur D250 in use
Can be fitted in vertical, horizontal or angled pipework
Ex-Scalibur D250 value pack Includes 8 'Rapid-Refill' cartridges
Ex-Scalibur D600 Commercial Includes 500gm Gelphos P powder
Also available
Gelphos P refill packs
GELPHOS P is available in cartons containing 8 rapid refill ready-to-use cartridges, and also in 1000g flasks of powder for maximum economy.
