Check valve cartridge for fluid pump

Fluid handling – Line condition change responsive valves – Direct response valves

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Details

137858, 251358, F16K 1516

Patent

active

058486151

ABSTRACT:
A check valve cartridge for a fluid pump, the check valve cartridge including: a valve seat; a flap valve member seated on the valve seat, the flap member having a first portion movable toward and away from the valve seat; a bumper seated on the flap member, said bumper member for biasing the first portion of the flap valve member toward the valve seat. The check valve cartridge also including a stop member located on the bumper, between the stop member and the flap member; and fastening means for joining the base, flap member, bumper, and stop member to form the integral valve cartridge. The check valve cartridge is seated in a recess formed in the pump housing and is located between the pump housing and a flow manifold.

REFERENCES:
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patent: 3295547 (1967-01-01), Scaramucci
patent: 3295550 (1967-01-01), Scaramucci
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patent: 3949716 (1976-04-01), Liu
patent: 4723896 (1988-02-01), Fritchman
patent: 4895494 (1990-01-01), Gardner
patent: 5285816 (1994-02-01), Herlihy
patent: 5370088 (1994-12-01), Nakamura
patent: 5434107 (1995-07-01), Paranjpe

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