Morrison Bros 158B-0800 AV 3" Vertical Back Pressure Valve Air Grease Pumps Pressure vacuum vents are installed

Pressure vacuum vents are installed on the top of underground and low volume aboveground storage tank vent pipes

The FR713V model is a 115V AC

a Teflon-coated brass packing nut

and drums as a gravity flow shut-off valve

or even hold it during filling

Morrison Bros 158B-0800 AV 3" Vertical Back Pressure Valve Air Grease Pumps Pressure vacuum vents are installedSingle poppet one way check valve used to maintain product flow in one direction. Heavy spring for back pressure applications. NOTE: Opening pressure settings are approximate. Standard Features Metal to metal seats 5 to 7 PSI spring settings Construction Details Body: Brass Cap: Brass Plunger: Brass Spring: Stainless steel Expansion valve: Brass with FKM