G Grizzly Backflow & Plumbing
San Diego, CA · 92101 Local testers · Utility reports filed

RPZ Valve Testing in San Diego, CA Near Me

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

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RPZ Valve Testing in San Diego, CA
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(833) 990-5874
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RPZ, DCVA and PVB
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RPZ Valve Testing in San Diego, CA

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 San Diego, CA 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 San Diego, CA

  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 San Diego, CA

Backflow testing for the neighborhoods and ZIP codes around San Diego, CA.

Neighborhoods we cover for backflow testing

  • Downtown San Diego
  • La Jolla
  • North Park
  • Mission Valley
  • Pacific Beach

ZIP codes we serve

92101 92102 92103 92104 92105 92106 92107 92108 92109 92110 92111 92113 92114 92115 92116 92117 92119 92120 92121 92122 92123 92124 92126 92127 92128 92129 92130 92131 92132 92134 92135 92136 92139 92140 92145 92147 92154 92155 92161 92179 92182

Backflow testing FAQs

Questions about backflow testing

Questions we hear most often about RPZ Valve Testing in San Diego, CA.

Talk to a person
How often does a backflow preventer need testing in San Diego, CA?
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.
What does a failed backflow test mean?
A check valve or the relief valve did not hold its required pressure differential. The device needs repair or replacement, then a retest before a passing report can be filed.
Do I need an expansion tank after installing a backflow preventer?
Often, yes. The device makes your plumbing a closed system, so heated water cannot expand back to the main and the water heater relief valve may start dripping.
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.
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 San Diego, CA? Call now.

Certified testers for backflow testing in San Diego, CA. 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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