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Vaughan PlumbersResidential & commercial plumbing 24-hour plumbing line · tap to call(365) 364-0926
Red riser valve on a standpipe
Red riser valve on a standpipe, the kind of assembly that gets a yearly test.

Protecting the city main

Backflow device tests for Vaughan properties

This valve assembly stops water in a building, boiler or irrigation line from being pushed back into the city main. It only counts if it is tested and passes.

  • Yearly tests on reduced pressure, double check and vacuum breaker devices
  • Check valves, springs and relief valves rebuilt on site
  • New or relocated assemblies piped in to code
  • Results handed over so you can file them on time
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Phone line staffed by tradespeople, not a call centre

  • Licensed and insured, paperwork shown on request
  • You approve the quote first
  • We tidy up after ourselves
  • Covering Vaughan and nearby York Region towns

Where backflow devices live

  • On the main water service just past the meter in plazas, warehouses and condo buildings.
  • On fire sprinkler connections.
  • On boiler make-up water and chiller feeds.
  • On irrigation systems, soda and coffee machines, and chemical dispensers.

The device type depends on the hazard. A reduced pressure (RP) assembly protects against high-hazard connections; a double check valve assembly suits lower ones.

How a test goes

  1. Notice. We tell the property contact how long the water will be off, usually a short window.
  2. Shut and connect. We close the shutoffs and hook a calibrated differential gauge to the test cocks.
  3. Read each check. Each check valve and the relief valve must hold its pressure differential.
  4. Pass or repair. If a check leaks, we clean or rebuild it and test again.
  5. Paperwork. You get the results to submit under the City program.

Standing over the problem right now?Ring (365) 364-0926 and describe what you see.

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Signs a device needs attention now

  • The relief valve on an RP assembly is spitting or running water.
  • No test tag, or a tag dated last year or earlier.
  • Water pressure in the building dropped after an assembly was installed.
  • A tenant added equipment such as a boiler or irrigation without a new device.
The City of Vaughan requires backflow protection on many non-single-family properties. Forms and due dates are set by the City and may change, so confirm them directly.

What we need from you

  • Access to the mechanical room or meter room.
  • The last test report, if you have it.
  • A contact who can warn tenants about the short shutdown.

How it works

  1. CallDescribe the problem; we ask about shutoffs and safety first.
  2. LookWe open it up and show you what failed.
  3. AgreeYou approve the price before work starts.
  4. Fix and testRepair, test, wipe down, and walk you through it.

Questions from callers

How often should our backflow device be tested?

Usually every year, plus after it is repaired or newly installed, but follow the current City requirements for your property.

Can you fix a device that failed its test?

Yes. A failed test usually comes down to a dirty or worn check or relief valve, which we rebuild, then a retest the same visit.

Ready when you are.Call Vaughan Plumbers at (365) 364-0926. A person answers.

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