G Grizzly Backflow & Plumbing
Park Rapids, MN · 56470 Local testers · Utility reports filed

Thermal Expansion Tank Tie-In in Park Rapids, MN Near Me

Thermal expansion tank tie-in in Park Rapids, MN 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 Park Rapids, MN
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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 Park Rapids, MN

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 Park Rapids, MN 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 Park Rapids, MN

  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 Park Rapids, MN

Backflow testing for the neighborhoods and ZIP codes around Park Rapids, MN.

ZIP codes we serve

56470

Backflow testing FAQs

Questions about backflow testing

Questions we hear most often about Thermal Expansion Tank Tie-In in Park Rapids, MN.

Talk to a person
What happens if I miss the backflow test deadline?
Utilities usually send a second notice, and after that some add a fee or schedule a service shutoff. Calling (833) 990-5874 before the deadline is the simplest way to avoid it.
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.
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.
Can a backflow preventer freeze?
Yes. Trapped water expands and can crack the bronze body or blow out the bonnet. Insulated enclosures, heat cable or draining the device for winter prevent it.
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 Park Rapids, MN? Call now.

Certified testers for backflow testing in Park Rapids, MN. 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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