G Grizzly Backflow & Plumbing
Phoenix, AZ · 85003 Local testers · Utility reports filed

Thermal Expansion Tank Tie-In in Phoenix, AZ Near Me

Thermal expansion tank tie-in in Phoenix, AZ after a backflow preventer or check valve closes your water system. Call (833) 990-5874.

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Thermal Expansion Tank Tie-In in Phoenix, AZ
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(833) 990-5874
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RPZ, DCVA and PVB
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Thermal Expansion Tank Tie-In in Phoenix, AZ

Install a backflow preventer on a home's main line and you have created a closed system. When the water heater runs, heated water expands and has nowhere to go. Pressure climbs until the temperature and pressure relief valve on the heater, set at 150 psi, starts to weep.

A thermal expansion tank fixes that. It is a small steel tank with an air bladder, tied into the cold supply near the heater. The bladder absorbs the expansion.

The detail people skip is the air charge. The tank has to be pre-charged to match your static water pressure, checked with a tire gauge before it goes on. A tank left at the factory 40 psi on a 70 psi system does very little.

Sizing depends on heater capacity and water pressure. A 40 or 50 gallon heater usually takes a 2 gallon tank.

Grizzly Backflow & Plumbing connects Phoenix, AZ homeowners with plumbers who tie in expansion tanks as part of backflow prevention work. Call (833) 990-5874.

How it works

Four steps to backflow testing in Phoenix, AZ

  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 Phoenix, AZ

Backflow testing for the neighborhoods and ZIP codes around Phoenix, AZ.

Neighborhoods we cover for backflow testing

  • Arcadia
  • Biltmore
  • Ahwatukee
  • Camelback East
  • Maryvale
  • South Mountain

ZIP codes we serve

85003 85004 85006 85007 85008 85009 85012 85013 85014 85015 85016 85017 85018 85019 85020 85021 85022 85023 85024 85026 85027 85028 85029 85031 85032 85033 85034 85035 85037 85040 85041 85042 85043 85044 85045 85048 85050 85051 85053 85054 85083 85085 85086

Backflow testing FAQs

Questions about backflow testing

Questions we hear most often about Thermal Expansion Tank Tie-In in Phoenix, AZ.

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.
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.
Who sends the test report to the water utility?
The tester usually files it, either on the utility's paper form or through its online portal. Ask for a copy for your own records.

Book a backflow test

Backflow Test Due in Phoenix, AZ? Call now.

Certified testers for backflow testing in Phoenix, AZ. 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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