BACKFLOW PROTECTION
Heating and Chilled Water systems other than in a residential property are Category 4 level of risk according to current regulations.
The only approved device according to the water regulations for protecting against Cat 4 back flow or syphonage is a Type BA device - “A Verifiable Back Flow Preventer” with “Reduced Pressure Zone”. Sometimes referred to an RPZ Valve.
NATIONWIDE WATER PRODUCTS LTD supply WRAS Approved RPZ valves primarily to prevent against Back Flow or Syphonage from Heating and Chilled Water systems into any Water Supply that could potentially be used for drinking, cooking, food preparation or washing subsequently having the potential to endanger human health.