
Franklin Fueling Systems
Franklin Fueling 804100930 Defender Series® P/V Vent w/ O-Rings regulates the pressure at which vapor is allowed to escape from the underground storage tank and the vacuum at which outside air is allowed to enter the tank. It's internal rolling diaphragm delivers consistent and controlled cracking for both low leak and high-pressure conditions while the superior construction of UV-resistant materials extends the overall service life. Order a P/V vent compatible with OPW® P/V vent adapters to retrofit existing OPW® vent stack adapters. O-rings are used for both Defender Series® and OPW® vent stack adapters.