High suction intake wiper

Details High suction intake wiper High suction intake wiper

1992-02-06

1995-04-18

Bertsch, Richard A.

Pumps

Expansible chamber type

Control by withdrawal or tilting of pump piston relative to...

417490, 417900, 92241, 92250, F04B 704

Patent

active

054073324

ABSTRACT:
In a priming piston loading double acting pump for high viscosity materials, the shovel plate assembly is formed of a flexible, abrasion resistant disk or cup. The disk may be made from silicon rubber and the cup may be made from a glass filled Teflon polytetrafluoroethylene material. The clearance between the plate assembly and the intake cylinder is essentially zero to allow for a build-up of a vacuum as the plate assembly moves downwardly and out of the intake cylinder to greatly enhance the loading ability of the pump.

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"Bulldog and King Pumps," Graco Instructions--Parts list, #306-646, Rev R., Oct. 1990.

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