Understanding Your Water Pressure
Understanding Your Water Pressure
Understanding your water pressure and the importance of this when choosing your taps and showers
It is important that you understand the hot water system in your dwelling prior to selecting your products. All products in this brochure are marked with a pressure rating (BAR pressure) min 0.5 bar and it is important that your hot and cold water system can produce the required level of pressure in order to make the items function correctly.
Please see below the diagrams of the typical hot and cold water systems in UK properties, along with an indication of the pressure rating of the products you can use with each system. Please be aware this is a guide only and for further information you should contact a qualified installer.
Gravity Hot Water System – Low Pressure
Combination Boiler – High Pressure
1
2
COLD WATER TANK
COLD WATER TANK
HOT WATER CYLINDER
COMBINATION BOILER
HOT WATER CYLINDER
COMBINATION BOILER
Low Pressure Gravity systems generally comprises of a tank in the loft of a building which feeds a hot water copper cylinder below. The Items available to choose from that work with this system are recommended to have a bar pressure that is; ≤ 0.2 Bar (for Taps and Showers on the same floor as the hot water cylinder) ≤ 0.5 Bar (for Taps and Showers on a floor below the hot water cylinder).
COLD WATER TANK The Items available to choose from that work with this system are recommended to have a bar pressure that is; ≤ 1.5 Bar. A combination boiler is fed by mains cold water and heats the hot water on demand. There are no storage tanks or shower pumps in this system.
COLD WATER TANK
PUMP
PUMP
UNVENTED PRESSURED CYLINDER
HOT WATER CYLINDER
UNVENTED PRESSURED CYLINDER
HOT WATER CYLINDER
BOILER
BOILER
EXPANSION VESSEL
EXPANSION VESSEL
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