Backflow Prevention – Reduced Pressure Zone (RPZ) Valves 

What is an RPZ valve?

Backflow of water – literally water flowing back into the system from where it came – poses one of the biggest risks of contamination to the mains water supply. An RPZ (Reduced Pressure Zone) valve is a cost effective type of backflow protection device that prevents this from happening. Backflow can happen when there is a reduction of pressure and it can suck contaminated water back into the drinking water supply.


Who needs to use RPZ valves?

RPZ valves are suitable for fluid category 4 risks which typically include the following:

  • Swimming pools
  • Launderettes
  • Food processing plants
  • Premises with significant dishwashing facilities such as restaurants, hotels and bars
  • Car washing facilities

Organisations in the leisure and hotel sectors are particularly at risk.


Your responsibilities for preventing backflow

Under the Water Industry Act 1991, property owners have a responsibility to ensure that every water system in their premises contains an adequate device to prevent the backflow of fluid from connections between potable and non-potable water supplies.


How we can help

We are accredited to install, test and service RPZ valves.