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BACKFLOW PREVENTER TEST REPORT Cross Connection Control - 4693 Rochester Rd Troy MI 48085-4928 248-524-3398 Desk 248-524-1541 Fax 248-524-3370 Ofc Property Occupant Service Address Office Phone No* Contact Suite City Zip Fax TROY State MI Name Mailing Address Ext. St / Zip Assembly Manufacturer Model Serial Number Application Other I. D. No* Size of Assembly Type of Assembly Location Fire System Downstream Static Riser Pressure Before Testing - First Test Date Pass Test Gauge Make 1 Shutoff C L ...

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How do you test a backflow valve?

4:44 6:03 Testing Procedure for Double Check Valves | Backflow Prevention YouTube Start of suggested clip End of suggested clip And record the reading on the differential pressure gauge. If a reading below seven kPa is indicatedMoreAnd record the reading on the differential pressure gauge. If a reading below seven kPa is indicated. The downstream non-return valve shall be deemed to be faulty.

What happens when a backflow valve fails?

Unfortunately, it can happen that valves in the system fail. This will allow used, dirty and contaminated water back into the system, affecting the drinking water thats supposed to be clean.

How do I know if my backflow valve is working?

One of the most common signs that your backflow device is not working properly is a decrease in water pressure. If you notice that your water pressure has suddenly dropped, it could be a sign that your backflow device is clogged or damaged.

What is sprinkler backflow testing?

During backflow testing, the inspector must verify that none of the stagnant, non-potable water in your fire sprinkler system is backing up into the potable water system in your building or structure.

How do you prepare for backflow testing?

PREP WORK: Identify the make, model, and serial number on the backflow device. Inspect that this is an approved assembly: 2-check valves, 2-shut-off valves, 4-test cocks. Observe the area to make sure there are no leaks. 2) Flush test cocks (1,2,3,4) then close all test cocks.

city of troy backflow test form

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How do you test a backflow prevention device?

When testing the device, the backflow certified plumber will first turn off the downstream shut-off valve and wait for a few minutes, and then hell test the pressure in the system by hooking up test kit hoses. The plumber is basically looking for areas where the pressure isnt what it should be.

What are three basic methods for testing a check valve?

Critical check valves are inspected/tested using three main methods: externally, internally and, in unique situations, in-line function testing.

What is the backflow passing value for RP?

An RP with a 1.5 PSID relief valve opening point will still prevent backflow, but does it at a value lower than the minimum accepted value of 2.0 PSID. For the assembly to perform optimally, it must operate at or above this minimum standard, in this case 2.0 PSID.