Morrison Bros 748A-3200 AV 3" FNPT Pressure Vacuum Vent - 20.2k SCFH Venting capacity 2.5 P.S.I. DEF Swivel Breakaways Vacuum-assist dispensing systems can aggravate

Vacuum-assist dispensing systems can aggravate this situation due to the slight pressurization of the UST

fuel oil and lubricating oil

Length    16 IN  |  40

Trigger Lock    Non-Locking

Morrison Bros 748A-3200 AV 3" FNPT Pressure Vacuum Vent - 20.2k SCFH Venting capacity 2.5 P.S.I. DEF Swivel Breakaways Vacuum-assist dispensing systems can aggravatePressure vacuum vent designed for installation on top of the vent pipe of an aboveground or underground storage tank. Poppets seal vapors in the tank when pressure is equalized. The vent allows the tank to breathe during filling and dispensing operations. This vent must be used in conjunction with an emergency vent. It is recommended that the opening pressure setting is set below that of the emergency vent so the normal vent operates first. Settings