Pump having relief valve seat free of direct structural restrain

Details Pump having relief valve seat free of direct structural restrain Pump having relief valve seat free of direct structural restrain

1997-09-19

1999-07-06

Kim, Ted

Pumps

With condition responsive pumped fluid control

Pressure responsive relief or bypass valve

417311, 13754319, 137541, F04B 4900

Patent

active

059190337

ABSTRACT:
A pump includes a coaxially integrated pump bypass/relief valve element of high density polymer material seats against a hard metallic sleeve that is pressed into a first counterbore around the bypass flow channel with an interference fit. That axial end of the sleeve bearing the valve seat face projects, for a substantial proportion of the sleeve length, beyond the first counterbore shoulder into a second counterbore space to provide an annular space around the outside diameter surface of the sleeve to free the seat face end of the sleeve from direct structural restraint.

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