RPZ valve testing & installation in London
Installation, commissioning and annual testing of RPZ (reduced pressure zone) backflow prevention valves — carried out by an accredited tester, with certificates and reminders so compliance never lapses.
Professional rpz testing, carried out properly.
Installation, commissioning and annual testing of RPZ (reduced pressure zone) backflow prevention valves — carried out by an accredited tester, with certificates and reminders so compliance never lapses.
Annual RPZ valve testing
RPZ valves must be tested at least every 12 months by an accredited tester. We carry out the full test on the relief valve and both check valves, record the results, and issue a certificate for your records and your water supplier.
Where a valve fails, we quote the repair or replacement, carry it out, and retest so you leave the visit compliant.
RPZ installation & commissioning
For fluid category 4 risks — commercial catering, irrigation, dosing systems, certain heating top-ups and industrial processes — we specify and install the correctly sized RPZ valve assembly with the required strainer, isolation, test cocks and tundish discharge.
The installation is commissioned, tested and notified to the water supplier where required.
Servicing, repairs & managed portfolios
We service and repair RPZ valves of all common makes, holding spares for the frequently used models to keep downtime short.
For property managers with multiple valves across a portfolio, we schedule testing, track renewal dates, and send reminders and consolidated certificates.
A complete service, carefully coordinated.
Free enquiry and fixed written quote in London
Accredited RPZ valve testing in London
Full test of relief valve and check valves in London
Test certificate for your records and water supplier in London
Repair or replacement of failed valves, then retest in London
Correctly sized RPZ assembly installation in London
Strainer, isolation, test cocks and tundish discharge in London
Commissioning and water supplier notification where required in London
Servicing and spares for common valve makes in London
Portfolio scheduling and renewal tracking in London
Reminders before the next test is due in London
Workmanship guarantee in London
Scope and specification are confirmed before work begins, so you have a clear understanding of what is included.
Discuss Your RequirementsHow RPZ testing works
A clear path to a tested, certified valve — and a diarised reminder for next year.
Step 01
Book the test
Tell us the valve make, size and location. For portfolios, send the list and we'll schedule the lot.
Step 02
On-site test
An accredited tester isolates the valve, tests the relief and check valves, and records the readings.
Step 03
Repair if needed
If the valve fails, we quote and carry out the repair or replacement using genuine parts, then retest.
Step 04
Certificate issued
You get a pass certificate for your records and to satisfy your water supplier.
Step 05
Reminder set
We diarise the next test date and send a reminder before it falls due.
Providing rpz testing services across London.
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Areas covered
Frequently asked about rpz testing
Let's talk about your rpz testing needs.
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RPZ Testing