Difference between RPZ and backflow preventer

RPZvalvehow it works

In the event of siphon backflow, the pressure on the inlet side drops. The bleeder valve reacts before the differential pressure falls below 140 mbar. The check valves on the inlet and outlet sides close, bleeder valve opens.

Fluid that represents a health hazard for human beings through the presence of one or more toxic or very toxic substances or one or more radioactive, mutagenic or carcinogenic substances.

RPZ diagram

RPZValveprice

Chemical mixing means, e.g. disinfectants, fertilisers, etc.Heating filling device, water with inhibitorsNon-certified softening systemsHigh-pressure cleaners

RPZ backflow preventers are based on a three-chamber system with supply pressure, medium pressure and back pressure zones. The differential pressure controllers of the protection cartridge on the inlet side and the check valve (RV) on the outlet side ensure reliability and a high level of safety.

KEMPER RPZ backflow preventers type BA protect drinking water from non-potable water up to and including fluid category 4.