RPZ Valve Testing, Installation & Maintenance
Professional RPZ valve services supporting backflow prevention, potable water protection, and compliance with water authority requirements.
What an RPZ Valve Is
An RPZ (Reduced Pressure Zone) valve is a backflow prevention device designed to protect potable water supplies from contamination.
It works by creating a controlled pressure zone that prevents contaminated water from flowing back into the clean water supply in the event of pressure changes or system faults.
RPZ valves are required in higher-risk installations where there is a credible risk of contamination from chemicals, fluids, or process water. Their function is fundamental to public health protection.
Why RPZ Valves Are a Legal Requirement
Water authorities require RPZ valves to be installed and maintained where the risk of backflow contamination is present.
This typically includes:
Mandatory installation in specified high-risk systems
Annual testing by a certified tester
Ongoing responsibility for system owners to maintain compliance
Failure to test and maintain RPZ valves can result in non-compliance with water authority conditions and increased liability for those responsible for the system.
Where RPZ Valves Are Typically Required
RPZ valves are commonly required in:
Commercial and industrial premises
Irrigation and landscaping systems
Fire suppression and sprinkler systems
Process water and manufacturing systems
Sites using chemicals or hazardous fluids
High-risk domestic installations
If a system presents a backflow risk, an RPZ valve is likely to be required.
Our RPZ Valve Services
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RPZ Valve Testing (Annual & Ad-hoc)
Certified testing to meet water authority requirements.
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RPZ Valve Installation
Installation of new or replacement RPZ assemblies where required.
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RPZ Valve Repairs & Maintenance
Efficient fault resolution and system restoration.
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Compliance Documentation & Reporting
Clear records suitable for submission and audit.
A Controlled Compliance Procedure
RPZ valve testing is carried out using certified procedures and calibrated equipment.
Testing typically includes:
Verification of pressure differentials across the valve
Confirmation of correct valve operation
Clear pass or fail outcomes
Immediate identification of faults or non-compliance
Results are recorded accurately to support compliance and reporting.
RPZ Valve Installation
We carry out RPZ valve installations for new systems, system upgrades, and replacement of non-compliant or failed devices.
Installation includes:
Correct sizing and positioning of the RPZ assembly
Compliance with local water authority requirements
Commissioning checks to confirm correct operation
Each installation is completed with long-term performance and compliance in mind.
How to Arrange RPZ Valve Services
Initial Enquiry
Contact us to discuss your RPZ valve requirements.
1
Scope Confirmation
We confirm valve details, testing requirements, and access arrangements.
2
Site Attendance
A certified tester attends site to carry out the works.
3
Certification & Reporting
Documentation is issued and submitted where required.
4
Clear, Audit-Ready Records
Our RPZ services include comprehensive documentation, which may include:
RPZ test certificates
Test results with pass or fail status
Repair and retest records, where applicable
Submission to the local water authority, where required
Audit-ready documentation for compliance review
Records are issued promptly and retained in line with requirements.
Who This Service Is For
RPZ valve services are commonly used by:
Facilities managers
Property and block managers
Business owners
Site managers
Landlords
Homeowners with regulated water systems
Each group benefits from clear scope, reliable testing, and defensible compliance records.