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Classic Series Vacuums Vacuum Relief Valve Test and Repair

Classic Series Vacuums Vacuum Relief Valve

The Vacuum Relief Valve regulates the vacuum pressure in the ClassicSeries® Wet-Ring vacuums. Recommended range for the system is from 10" to 12" Hg. The system is preset at the factory for 10" Hg. The Vacuum Relief Valve is located on top of the intake manifold assembly.

Vacuum Relief Valve Adjustment

Classic Series Vacuums Vacuum Relief Valve

•Rotate barrel clockwise to increase “Hg.

•Rotate barrel counterclockwise to decrease “Hg.

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