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Air operated vapor vents are used to connect tankcompartments to the rollover rail vapor recovery system,effectively sealing the tank compartmentswhen transporting,then opening to allowvapor flowduringloadingandunloading.Handle fuel vapors safely and efficiently with thislightweight aluminum vapor valve.The air-operated valveallows fast vapor flow during loading and unloading. Thepoppet is designed to open into the tank，preventingaccidental leakage from product surges or from a tank truckrolloaver.Easy-to-use air line connections are located outside thecompartment for convenient installation and maintenance.
Features &Benefits:
4" high-capacity design provides superior flow for fasterloading and unloading
Multiple mounting options,stainless steel spring,1/4 " NPTair lineholes
Minimum operating pressure,60 PSl; units begin tosequence at 50 PSl and begin to exhaust at 40PSl
For use with 20 " manhole,4 " TTMA bolt pattern mounting
Safe inward opening valve, easy maintenance of viton O'Ring seals
Built in sequencing feature allows control of emergency valve if desired
4" high-capacity design provides superior flow for fasterloading and unloading
Multiple mounting options,stainless steel spring,1/4 " NPTair lineholes
Minimum operating pressure,60 PSl; units begin tosequence at 50 PSl and begin to exhaust at 40PSl
For use with 20 " manhole,4 " TTMA bolt pattern mounting
Safe inward opening valve, easy maintenance of viton O'Ring seals
Built in sequencing feature allows control of emergency valve if desired
