Your Specialist RPZ Valve Tester
Captain Backflow is the UK's dedicated RPZ valve tester. We provide compliant annual testing for commercial premises nationwide, using calibrated equipment to confirm your valves are operating correctly and supplying the documentation your water supplier and insurer expect.
What does an RPZ valve tester do?
An RPZ valve tester checks that both check valves and the relief valve inside your RPZ assembly are operating within the required pressure parameters. This confirms the valve is still providing the level of backflow protection your premises requires.
Annual testing is a requirement for most RPZ installations under UK water industry guidance. Captain Backflow carries out this testing using calibrated equipment and provides compliant documentation for your records, your water supplier and your insurer.
Our RPZ valve testing service
Thorough, compliant testing that keeps your installation and your business protected.
Annual testing
Both check valves and the relief valve tested for tightness and correct pressure.
Compliant records
Documentation for your water supplier, insurer and compliance records.
Repair quotes
If a valve fails we explain why and quote for the service or repair needed.
Calibrated equipment
Digital and manual testing with regularly calibrated test kits.
Our testing process
A clear, methodical process that confirms your valve is compliant.
- 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 the results and provide compliant documentation.
- 5
If anything fails, we quote for the service or repair and re-test.
Specialist focus
RPZ and water compliance is all we do.
Compliant records
Documentation for your water supplier and insurer.
Digital & manual
Calibrated digital and proven manual testing.
Install & maintain
Supply, fit, test and service RPZ valves.
Why use a specialist RPZ valve tester?
RPZ valve testing requires calibrated equipment and trained understanding of valve mechanics.
A properly tested RPZ valve confirms your premises is protecting the public water supply.
Water suppliers require annual testing and compliant documentation from a competent tester.
Using a specialist ensures the test is carried out correctly and the documentation is accepted.
We test valves regardless of who installed them, so you are not locked into one supplier.
Request a free quote
Tell us your postcode and the number of valves. We will confirm availability and pricing.
RPZ Valve Tester — your questions
Book your RPZ valve test
Get a free quote for annual RPZ valve testing from a specialist tester.