RPZ Valve Testing in London
Professional RPZ valve testing and backflow prevention for commercial properties in London and the surrounding London area.
RPZ testing services in London
London's vast stock of offices, hotels, hospitals and catering businesses makes RPZ valve compliance a routine requirement across every borough.
Listed buildings and shared risers in central London often complicate valve access and testing.
We test reduced pressure zone valves to confirm both check valves and the relief valve are operating within the required parameters, and we provide compliant documentation for your records. Testing is generally carried out annually, though the exact obligation depends on the installation, your water supplier and the relevant requirements that apply.
Typical London commercial properties we test
The testing process
- 1
We isolate the valve and connect calibrated test equipment.
- 2
Both check valves are tested for tightness and correct pressure.
- 3
The relief valve is tested for correct opening pressure.
- 4
We record results and provide compliant documentation.
- 5
If anything fails, we quote for the service or repair and re-test.
Why use Captain Backflow in London?
Specialist focus on RPZ and water compliance
Compliant documentation for every valve
Coverage across London
Advice on the correct protection for your risk