G Grizzly Backflow & Plumbing
Washington, DC · 20001 Local testers · Utility reports filed

RPZ Valve Testing in Washington, DC Near Me

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

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RPZ Valve Testing in Washington, DC
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(833) 990-5874
Certified testers
Reports filed with your utility
RPZ, DCVA and PVB
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RPZ Valve Testing in Washington, DC

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 Washington, DC 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 Washington, DC

  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 Washington, DC

Backflow testing for the neighborhoods and ZIP codes around Washington, DC.

ZIP codes we serve

20001 20002 20003 20004 20005 20006 20007 20008 20009 20010 20011 20012 20015 20016 20017 20018 20019 20020 20024 20032 20036 20037 20045 20052 20057 20059 20064 20204 20220 20230 20240 20245 20250 20260 20317 20319 20390 20408 20415 20418 20422 20427 20431 20510 20515 20520 20530 20535 20540 20542 20551 20560 20565 20566 20591

Backflow testing FAQs

Questions about backflow testing

Questions we hear most often about RPZ Valve Testing in Washington, DC.

Talk to a person
Who is allowed to test my backflow device?
A tester who holds a backflow tester certification recognized by your state or your water utility. Many utilities keep an approved tester list and reject reports signed by anyone not on it.
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.
Will my water be off during the test?
Yes, briefly. The tester closes the shutoff valves on the assembly while reading the checks, so water downstream of the device is off until the test is done.
What is a cross-connection?
Any point where drinking water piping can come into contact with a non-potable source. Common examples are a hose in a bucket, a boiler fill line and an irrigation system.
Can a backflow preventer be repaired instead of replaced?
Often it can. Rebuild kits with new discs, springs and seals are sold for most brands. Replacement makes more sense when the body is cracked or parts are no longer made.

Book a backflow test

Backflow Test Due in Washington, DC? Call now.

Certified testers for backflow testing in Washington, DC. 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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