•   JAYCO SUPER SEAL  •  EXCEEDS API2000 STANDARDS FOR ALLOWABLE LEAKAGE  •  ALL HIGH TENSILE STRENGTH ALUMINUM BODY, LID, AND FLANGE  •  FULL OPENING LID AND LARGE BODY CAVITY FOR EASY CLEAN-OUT AND MAINTENANCE  •  EASY VACUUM SEAT REPLACEMENT  •  INTERNAL PLUNGER HAS BUILT IN VACUUM BREAKER - OR - OPTIONAL PRESSURE ONLY PLUNGER  •  DEPENDABLE STOCK LEVELS AT OUR FACTORY  

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 THE PURPOSE OF THE VENT VALVE IS TO WORK IN TANDEM WITH THE THIEF HATCH TO MINIMIZE THE ESCAPE OF LIGHT ENDS OF CRUDE IN LEASE STORAGE TANKS BY MAINTAINING A PRESSURE ON THE TANK.  A VACUUM RELIEF FUNCTION IS ALSO STANDARD TO PREVENT A SUCTION OR A DRAW DOWN FROM COLLAPSING THE TANK.  THE VENT VALVE IS INSTALLED INTO THE VENT LINE EXHAUST TO ACCOMPLISH THIS.      

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 JAYCO INLINE AND STACK VENT VALVES ARE DESIGNED FOR OPTIMUM PERFORMANCE AND EASY CLEAN OUT AND MAINTENANCE, AND ARE AVAILABLE IN 2, 3, AND 4 INCH SLIP-ON ENDS.  THE STANDARD VACUUM SETTING IS 0.4 OUNCE.  STANDARD PRESSURE SETTINGS ON 2 AND 3 INCH ARE 1.3 OUNCE, 4 INCH VALVES ARE 1.5 OUNCE.  ADDITIONAL WEIGHTS ARE AVAILABLE IN ONE OUNCE INCREMENTS.

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