SPECIAL FEATURES 

Easy Inspection: Maintains Accurate Settings: Condensate Drainage: Air-Cushioned Seating: The Model 5500 incorporates the same rugged design found in all Valve Concepts venting devices - they're made to last. The main valve seat can easily be inspected without affecting the set point. The pilot assembly uses standard o-rings. Maintenance is easy and less expensive.

Maintains Accurate Settings: The standard minimum setting is 4 inches WC on all sizes. Maximum pressure setting is 15 psig. A certified test certificate is included with each vent verifying the accuracy.

Condensate Drainage: Self-draining housing body and drip rings keep condensate away from seating surfaces, preventing freezing, binding and clogging.

Air-Cushioned Seating: Air-cushion seating provides tight sealing to reduce evaporation losses. The pallets have outer guiding and center stabilizing stem to provide self alignment and tight seating.

TECHNIQUE

A pallet in the vent housing opens and closes permitting relief necessary, under working conditions, to avoid tank damage. A flanged side connection is provided for easy pipe-away of vapors, eliminating their emission into the atmosphere, and allowing compliance with applicable regulations.