G Grizzly Backflow & Plumbing
Cincinnati, OH · 45202 Local testers · Utility reports filed

RPZ Valve Testing in Cincinnati, OH Near Me

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

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RPZ Valve Testing in Cincinnati, OH
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(833) 990-5874
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RPZ, DCVA and PVB
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RPZ Valve Testing in Cincinnati, OH

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 Cincinnati, OH 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 Cincinnati, OH

  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 Cincinnati, OH

Backflow testing for the neighborhoods and ZIP codes around Cincinnati, OH.

Neighborhoods we cover for backflow testing

  • Downtown Cincinnati
  • Over-the-Rhine
  • Mount Adams
  • Hyde Park

ZIP codes we serve

45202 45203 45204 45205 45206 45207 45208 45209 45211 45212 45213 45214 45215 45216 45217 45218 45219 45220 45223 45224 45225 45226 45227 45229 45230 45231 45232 45233 45236 45237 45238 45239 45240 45241 45242 45243 45244 45245 45246 45247 45248 45249 45251 45252 45255 45267

Backflow testing FAQs

Questions about backflow testing

Questions we hear most often about RPZ Valve Testing in Cincinnati, OH.

Talk to a person
How often does a backflow preventer need testing in Cincinnati, OH?
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 is the difference between an RPZ and a double check valve?
Both have two independent check valves. An RPZ adds a relief valve between the checks that discharges water to atmosphere if the checks leak, which is why it is required on high-hazard connections.
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.
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.
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.

Book a backflow test

Backflow Test Due in Cincinnati, OH? Call now.

Certified testers for backflow testing in Cincinnati, OH. 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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