RPZ (Reduced Pressure Zone) Valve Installation, calibration and testing

RPZ (Reduced Pressure Zone) Valve Installation, testing and servicing.

RPZ (Reduced Pressure Zone) Valves are installed where a maximum of a Fluid Category 4 backflow protection is required.

These valves are required to be tested upon installation and every 12 monthly thereafter, certificates must be submitted to your local water authority as proof of testing.

Commissioning & testing MUST be carried out by a Qualified and WRAS approved tester

Stara Water Hygiene can carry out Testing to all types of RPZ valves, testing is carried out by a WRAS approved Tester and certification supplied immediately after test.

We can also carry out repairs to existing valves or supply and install new valves.


If you have and questions, would like any advice or would simply like to discuss further please just get in touch.


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If you have any queries, require a quote or assistance please contact us.

Contact Info

Robins Bank, Baldingstone, Bury, BL9 6RX

0161 327 2762