RPZ Valve Testing & Installation Nationwide
Captain Backflow is the UK's specialist for RPZ valve testing, installation and ongoing compliance. We help commercial premises stay compliant with water regulations through professional annual testing and certified installation.
What is an RPZ valve?
A Reduced Pressure Zone (RPZ) valve is the highest level of backflow prevention available for protecting the public water supply. It is required where there is a serious risk of contamination from a commercial property's water system back into the mains supply.
RPZ valves must be installed correctly, tested annually and maintained to remain compliant with UK water industry requirements. Captain Backflow provides the full service — from supply and installation through to annual testing and repair — so your premises stay protected and compliant year after year.
Our RPZ services
Everything you need to keep your RPZ valves compliant and your water supply protected.
RPZ installation
Supply and fit RPZ valve assemblies to the correct standard for your fluid category risk.
Annual testing
Compliant annual testing of both check valves and the relief valve with full documentation.
Maintenance & repair
Servicing, repairs and replacement of faulty valves to keep your installation compliant.
Risk assessment
We assess your premises and advise on the correct backflow protection for your risk level.
How we work
A clear, professional process from first enquiry to compliant installation.
- 1
We assess the risk at your premises and confirm the fluid category and correct valve type.
- 2
We quote for supply and installation, with no obligation to proceed.
- 3
We fit the RPZ valve assembly to the correct orientation and clearances for testing.
- 4
We test the new installation and provide compliant documentation for your records.
- 5
We set up your annual testing reminder so the valve stays compliant year after year.
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 RPZ compliance matters
Failing to maintain an RPZ valve can put your water supply and your business at risk.
An untested or faulty RPZ valve can allow contaminated water back into the public supply, creating a serious health risk.
Water suppliers require annual testing and may disconnect non-compliant installations.
Insurers and auditors may require evidence of compliant testing records.
A correctly maintained RPZ valve protects your business, your staff and the public water supply.
Request a free quote
Tell us your postcode and the number of valves. We will confirm availability and pricing.
RPZ — your questions
Need RPZ valve testing or installation?
Get a free, no-obligation quote from the UK's RPZ and water compliance specialists.