Vent valve used on low volume aboveground tanks for motor fueling. Vent allows tank to "breathe" during filling and dispensing operations. Poppets seal vapors in the tank when pressure is equalized
Emergency Vent (pressure relief only) used on aboveground storage tanks, as a code requirement, to help prevent the tank from becoming over-pressurized and rupturing if exposed to fire. Series also contains flanged adaptor, companion flange, and pipe nipple fittings.