G Grizzly Backflow & Plumbing
San Jose, CA · 95110 Local testers · Utility reports filed

Double Check Valve Testing in San Jose, CA Near Me

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

Call (833) 990-5874 More services
Double Check Valve Testing in San Jose, CA
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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 San Jose, CA

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 San Jose, CA 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 San Jose, CA

  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 San Jose, CA

Backflow testing for the neighborhoods and ZIP codes around San Jose, CA.

Neighborhoods we cover for backflow testing

  • Downtown San Jose
  • Willow Glen
  • Japantown
  • Alum Rock
  • Evergreen
  • Cambrian
  • Almaden Valley

ZIP codes we serve

95110 95111 95112 95113 95116 95117 95118 95119 95120 95121 95122 95123 95124 95125 95126 95127 95128 95129 95130 95131 95132 95133 95134 95135 95136 95138 95139 95148

Backflow testing FAQs

Questions about backflow testing

Questions we hear most often about Double Check Valve Testing in San Jose, CA.

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.
Does my lawn sprinkler system in San Jose, CA need a backflow preventer?
Almost every US plumbing code requires one on irrigation, since fertilizer, pesticide and standing water at the heads can siphon back. The device type depends on local code and how the system is laid out.
What does a failed backflow test mean?
A check valve or the relief valve did not hold its required pressure differential. The device needs repair or replacement, then a retest before a passing report can be filed.
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.
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 San Jose, CA? Call now.

Certified testers for backflow testing in San Jose, CA. 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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