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Sable L4-153 2.5L HSC
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Vacuum Check Valve
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Testing and Inspection
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Vacuum Check Valve: Testing and Inspection
Apply 54 kPa (16 in. Hg.) vacuum to "check" side of valve and trap. If vacuum remains above 50.6 kPa (15 in. Hg.) for 10 seconds, the valve is acceptable.