G Grizzly Backflow & Plumbing
O Fallon, MO · 63366 Local testers · Utility reports filed

Backflow Preventer Installation in O Fallon, MO Near Me

Backflow preventer installation in O Fallon, MO for new services, irrigation systems and code corrections. Call (833) 990-5874.

Call (833) 990-5874 More services
Backflow Preventer Installation in O Fallon, MO
Call us
(833) 990-5874
Certified testers
Reports filed with your utility
RPZ, DCVA and PVB
Price talked through by phone

Backflow Preventer Installation in O Fallon, MO

A backflow preventer installation starts with one question: what is the hazard? Your water purveyor or local code decides whether you need an RPZ, a double check, a PVB or a spill-resistant vacuum breaker.

Grizzly Backflow & Plumbing connects you with plumbers in O Fallon, MO who size the device to the line, set it at the right height and leave clearance for testing. An RPZ needs space under the relief port and a drain that can take a full discharge. A PVB needs 12 inches of rise above the highest outlet. A DCVA needs test cocks you can reach with a gauge.

Most utilities want the device tested within days of installation, and some will not close a permit until that first report is filed. Plan for it.

Permits, unions on both sides and a strainer upstream on dirty water systems are worth asking about. A strainer is cheap compared to rebuilding checks every year.

Call (833) 990-5874 to get a backflow preventer installed correctly in O Fallon, MO, with backflow testing done right after.

How it works

Four steps to backflow testing in O Fallon, MO

  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 O Fallon, MO

Backflow testing for the neighborhoods and ZIP codes around O Fallon, MO.

Neighborhoods we cover for backflow testing

  • Dardenne Prairie
  • Weldon Spring
  • Lake St. Louis

ZIP codes we serve

63366 63368

Backflow testing FAQs

Questions about backflow testing

Questions we hear most often about Backflow Preventer Installation in O Fallon, MO.

Talk to a person
How long does a backflow test take?
A residential PVB or double check test usually takes 20 to 30 minutes. Large commercial and fire line assemblies take longer.
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.
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.
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 O Fallon, MO? Call now.

Certified testers for backflow testing in O Fallon, MO. 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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