Testing Backflow Preventers on Fire Systems Without Closing the Control Valves
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YouTubeJimmy Backflow
Testing Backflow Preventers on Fire Systems Without Closing the Control Valves
Can you perform the protective aspects test on backflow perverters installed on fire systems without closing the upstream or downstream control valves? The answer is Yes, provided there is no downstream demand, and if testing a DCVA, there is no backpressure at test cock four. You may already be performing this test; it is nothing new; it is ...
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