Technical
Technical Information Regarding RPZ Valves
The Reduced Pressure Zone Assembly (RPZ) will prevent back siphonage within a water supply network, the principal operation of an RPZ is very simple. The valve consists of three sections: - Downstream check valve, discharge chamber and the upstream check valve. In the event of a problem, system and negative pressures are created causing back siphonage, the RPZ valve will prevent the contamination of the water supplies on the inlet side of the valve. The valve will automatically close the inlet supply and the discharge valve will open and discharge water to drain until such time as the pressure returns to normal, at this point the discharge valve will close the inlet check valve will open restoring the water supply to the system.
For many years the installation of an RPZ valve has been common practice throughout Europe and the USA. With the replacement of the Water Byelaws Scheme with the new Water Supply (Water Fittings) Regulations 1999, for the first time in the UK water industry, the benefits, and advantages of an RPZ valve have been recognised.
For many years the installation of an RPZ valve has been common practice throughout Europe and the USA. With the replacement of the Water Byelaws Scheme with the new Water Supply (Water Fittings) Regulations 1999, for the first time in the UK water industry, the benefits, and advantages of an RPZ valve have been recognised.
