Pumps – Expansible chamber type – Plural pumping chambers
Patent
1993-04-06
1995-04-04
Bertsch, Richard A.
Pumps
Expansible chamber type
Plural pumping chambers
417900, 92141, 137522, F01B 2102
Patent
active
054031680
ABSTRACT:
A double acting pump having inlet and outlet poppet valves clamped to the pump housing in proximity to an inlet manifold and an outlet manifold. The end portion of each cylinder in the double acting pump is provided with a sloped wall to prevent debris in the pumped fluid from becoming stuck in the pump cylinder. Each poppet includes a valve housing having a spring biased valve head slidably mounted therein and engageable with a removable valve seat. A stem is connected to the valve head and extends through an end wall of the valve housing to the exterior thereof to function as an external indicator rod to indicate the position of the valve head within the valve body. A handle is connected to the stem so that the stem can be manually pulled to lift the valve head from the seat to check the operation of the poppet valve, and a disc is mounted on the stem a predetermined distance from the end wall when the valve is in the closed position so that the wear between the valve seat and head can be obtained. The valve seat is dimensioned to allow a substantially unrestricted flow of fluid therethrough and having a 45.degree. slope engageable by a 90.degree. edge on the valve head to minimize the surface area between the valve head and seat so that debris cannot be trapped between the valve head and seat to prevent the valve head from properly seating.
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Bayou City Pump Works, Inc.
Bertsch Richard A.
Kocharov M.
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