HIGH PRESSURE SELF-VENTING PRESSURE …

CLOSEDB alanced Poppet is springloaded against the seat. Whenfull upstream PRESSURE isapplied, a slightly unbalancedforce is developed whichenhances downstream processdemands flow, the pressureacting on the piston decays,allowing the adjusting springforce to push the piston unseats the poppet,allowing flow to begin andpressure under the piston toincrease until balance isachieved between adjusting spring force and downstreampressure. This condition continues until process demandceases. At this point, increasing PRESSURE overcomes springforce, moving the piston up, allowing the poppet to the downstream pressureshould increase beyondregulation set point, or handleis backed off to decreaseregulated PRESSURE level,downstream PRESSURE will ventthrough the piston and guide tothe vent port. The pressureload from the pistonovercomes the set spring loadand moves the piston upward.

CLOSED Balanced Poppet is spring loaded against the seat. When full upstream pressure is applied, a slightly unbalanced force is developed which enhances sealing.

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  High, Pressure, Self, Venting, High pressure self venting pressure

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