CommercialCross-connection control
Cross-Connection Devices: Markham Backflow Checks
A backflow preventer stops building water from flowing back into the public main. Testable assemblies need regular checks by a qualified tester.
Beautiful white house amidst vibrant fall foliage in a serene neighborhood setting.
- Annual testing of RP, DCVA and similar assemblies arranged
- Failed checks rebuilt with the correct repair kit
- Replacement assemblies sized to the service
- Results recorded for municipal reporting
- Licensing details confirmed when you call
- Residential
- Commercial
- Markham & York Region
How the job runs
- On the incoming domestic water service of commercial buildings.
- On fire sprinkler connections.
- On lines feeding boilers, irrigation, carbonators and process equipment.
What the test involves
- Notify the occupants that water will be off briefly.
- Hook our calibrated differential gauge onto each numbered port.
- Check each check valve and, on RP assemblies, the pressure where the relief port starts to dump.
- Record the readings and restore service.
Municipal requirements
The City of Markham runs a cross-connection control program; many non-residential owners must fit testable devices, have them checked and file the results. The details, deadlines and accepted tester qualifications can change, so confirm the current terms with the City before your test date. We tell you what certification the person attending holds.
From the van: A relief valve that drips steadily on an RP assembly is a warning sign, not a nuisance. It usually means the first check is fouled or worn.
When an assembly fails
Most failures come from debris on a check seat or a tired spring or rubber. We rebuild with the manufacturer kit, retest, and only recommend replacement when the body is damaged or parts are no longer made. Call (289) 216-9245 to book a test.