G Grizzly Backflow & Plumbing
Carlinville, IL · 62626 Local testers · Utility reports filed

Double Check Valve Testing in Carlinville, IL Near Me

Double check valve assembly testing in Carlinville, IL for low-hazard and fire line connections. Call (833) 990-5874 to schedule.

Call (833) 990-5874 More services
Double Check Valve Testing in Carlinville, IL
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(833) 990-5874
Certified testers
Reports filed with your utility
RPZ, DCVA and PVB
Price talked through by phone

Double Check Valve Testing in Carlinville, IL

A double check valve assembly, or DCVA, has two independent spring-loaded checks between two resilient-seated shutoffs and four test cocks. It is approved for low-hazard connections, so you see it on many fire lines, apartment services and some irrigation systems.

The tester bleeds and reads each check separately. Each one has to hold a differential of at least 1.0 psid. If a check reads lower, the cause is usually a worn rubber disc, a weak spring or debris across the seat.

Unlike an RPZ, a DCVA can be installed in a pit or vault in many jurisdictions, which brings its own problems. Flooded vaults make test cocks hard to reach and corrode the bolts. Testers often pump the vault before they can start.

Grizzly Backflow & Plumbing connects you with local testers in Carlinville, IL for double check valve testing, report filing with your purveyor and repair if a check fails. Good backflow prevention depends on both checks holding, not one. Call (833) 990-5874.

How it works

Four steps to backflow testing in Carlinville, IL

  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 Carlinville, IL

Backflow testing for the neighborhoods and ZIP codes around Carlinville, IL.

Neighborhoods we cover for backflow testing

  • Downtown Carlinville
  • Blackburn University Area

ZIP codes we serve

62626

Backflow testing FAQs

Questions about backflow testing

Questions we hear most often about Double Check Valve Testing in Carlinville, IL.

Talk to a person
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.
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.
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 Carlinville, IL? Call now.

Certified testers for backflow testing in Carlinville, IL. 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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