Learning the Basics
One-Hose Test Procedurefor an ASSE 1056 Spill Resistant Vacuum Breakers (SRVB)
Flush Test Cock
Step #1 Open TC - close
Step #2 Loosen vent screw - close vent screw
Attach Test Kit Bleed air by opening high bleed valve close
Step #1 Attach test Gage
Step #2 Test kit shall be centered at TC #1 for all tests
Step #3 Close high and low valve and high and low bleed valves- open bypass valve
Step #4 Attach high hose to TC #1
Step #5 Open TC #1
Step #6 Bleed air by opening high bleed valve close
Test #1 -Tightness of Check Valve/ShutoffValves
Step #1 - Close #2 shutoff
Step #2 - Close #1 shutoff
Step #3 - Slowly remove vent screw on SVB
- TEST RESULTS -
If the differential gauge reading is 1 psid or higher when the discharge from the vent screw stops, record as passed.
Test #2 - Air Inlet Opening
Step #1 - Remove air inlet canopy
Step #2 - Open high valve and record differential gauge reading when the air inlet opens Step #3- Record if air inlet valve isfully open
- TEST RESULTS -
If the air inlet is visually open when the differential gauge reading is 1psid or greater, record valve passed.
Restore System
Step #1 Close all TCs
Step #2 Open all valves on test kit to drain water
Step #3 Restore to pre-test state
Step #4 Remove hoses
The tester shall provide copies of the test results to the owner and Open all valves on test kit to drain water other appropriate parties as required. The tester shall maintain a copy for their records.
Field Testing Requirements
Watts SRVB
The Watts 008 is a spill-proof pressure vacuum breaker ( PVB ). It is available in 3/8” – 1” sizes and has been in production since 1994. The 008 body is made of bronze while the 008PC utilizes a polycoated bronze body. A lead free version was introduced in 2013.
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ASSE approved 1 Hose Test Procedure