G Grizzly Backflow & Plumbing
Minneapolis, MN · 55401 Local testers · Utility reports filed

RPZ Valve Testing in Minneapolis, MN Near Me

RPZ (reduced pressure zone) valve testing in Minneapolis, MN for high-hazard water connections. Relief valve and both checks tested. Call (833) 990-5874.

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RPZ Valve Testing in Minneapolis, MN
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(833) 990-5874
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Reports filed with your utility
RPZ, DCVA and PVB
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RPZ Valve Testing in Minneapolis, MN

An RPZ, or reduced pressure zone assembly, protects the public water main from high-hazard connections: boiler feeds, chemical injection, car washes, medical and dental offices, and irrigation with fertilizer injection.

The test has three parts. First the tester checks that the relief valve opens at 2.0 psid or more. Then the first check is read, and it usually holds a differential of 5 psid or higher. Last, the second check is tested for tightness against backpressure.

A dripping relief port is the classic RPZ complaint. Most of the time a pebble or scale from a recent main break is holding the first check open. Sometimes the relief diaphragm itself has torn.

RPZ assemblies must sit above grade with open air under the relief port. One buried in a pit can flood and siphon dirty water back, which is why most codes forbid it.

Grizzly Backflow & Plumbing connects Minneapolis, MN property owners with testers who handle RPZ valve testing and backflow prevention paperwork for brands like Watts, Febco, Wilkins and Ames. Call (833) 990-5874.

How it works

Four steps to backflow testing in Minneapolis, MN

  1. 01

    Grab your notice

    Have the utility letter handy. It lists the device, serial number and due date.

  2. 02

    Talk it through

    Call (833) 990-5874. We go over the device type and the price before anything is booked.

  3. 03

    Test day

    A certified tester reads each check and the relief valve on a calibrated gauge.

  4. 04

    Report filed

    The report goes to your water utility, and you keep a copy for your records.

Coverage

Backflow Testing Services Across Minneapolis, MN

Backflow testing for the neighborhoods and ZIP codes around Minneapolis, MN.

Neighborhoods we cover for backflow testing

  • Downtown
  • Northeast
  • North Loop
  • Uptown
  • Powderhorn
  • Longfellow
  • Cedar-Riverside
  • Phillips
  • Camden
  • Near North
  • Southwest
  • University

ZIP codes we serve

55401 55402 55403 55404 55405 55406 55407 55408 55409 55410 55411 55412 55413 55414 55415 55416 55417 55418 55419 55420 55421 55422 55423 55424 55425 55426 55427 55428 55429 55430 55431 55432 55433 55434 55435 55436 55437 55438 55439 55441 55442 55443 55444 55445 55446 55447 55448 55449 55450 55454 55455

Backflow testing FAQs

Questions about backflow testing

Questions we hear most often about RPZ Valve Testing in Minneapolis, MN.

Talk to a person
How often does a backflow preventer need testing in Minneapolis, MN?
Most water utilities require a test once a year. Many also require one at installation, after any repair and after the device is moved. Your utility's notice letter gives the exact due date.
Why is water dripping from my RPZ relief valve?
A steady drip usually means debris is holding the first check open or the relief valve diaphragm is worn. A cleaning or a rebuild kit fixes most cases.
Does my lawn sprinkler system in Minneapolis, MN need a backflow preventer?
Almost every US plumbing code requires one on irrigation, since fertilizer, pesticide and standing water at the heads can siphon back. The device type depends on local code and how the system is laid out.
Can a backflow preventer freeze?
Yes. Trapped water expands and can crack the bronze body or blow out the bonnet. Insulated enclosures, heat cable or draining the device for winter prevent it.
Is fire sprinkler backflow testing different?
Yes. Along with the standard check valve test, NFPA 25 calls for an annual forward flow test on fire line backflow assemblies. Results often go to both the water utility and the fire authority.

Book a backflow test

Backflow Test Due in Minneapolis, MN? Call now.

Certified testers for backflow testing in Minneapolis, MN. Call (833) 990-5874 and we go through the device and the price before anything is booked.

(833) 990-5874
Phone · (833) 990-5874
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