Vacuum Check Valve: Testing and Inspection
Vacuum Check Valve:
Apply 54 kPa (16 in Hg) vacuum to "check" side of the valve and trap. If vacuum remains above 50 kPa (15 in Hg) for 10 seconds, the valve is acceptable.
Apply 54 kPa (16 in Hg) vacuum to "check" side of the valve and trap. If vacuum remains above 50 kPa (15 in Hg) for 10 seconds, the valve is acceptable.