Morrison Bros 158B-0800 AV 3" Vertical Back Pressure Valve Air Grease Pumps Designed for use in vertical

Designed for use in vertical piping systems

or even hold it during filling

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

Dynamic seals have double o-ring construction for long life and low temperature performance

Excellent resistance to gasoline (up to 20% alcohol and petroleum blends)

Morrison Bros 158B-0800 AV 3" Vertical Back Pressure Valve Air Grease Pumps Designed for use in verticalSingle 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