Double poppet relief valve

Details Double poppet relief valve Double poppet relief valve

1988-05-13

1989-07-25

Rivell, John

Fluid handling

Line condition change responsive valves

Direct response valves

137528, 251120, 251118, F16K 4708

Patent

active

048503924

ABSTRACT:
A double poppet area relief valve for use in a well treatment pumping system. The relief valve includes a housing comprising a cylinder and a body. A piston is disposed in the cylinder and has a push rod extending therefrom into the body. A double poppet assembly is attached to an end of the push rod. In one embodiment, the double poppet assembly includes a sealing poppet assembly for sealing with a poppet seat when in a closed position and an orificing poppet assembly for providing throttled fluid flow through the body when in an open position. In a second embodiment, a ring holder is attached to the push rod and has a sealing poppet ring and an orificing poppet ring disposed thereon. The sealing poppet ring and the orificing poppet ring function in a manner similar to the sealing poppet assembly and orificing poppet assembly, respectively, of the first embodiment. With both embodiments, wear is minimized on the sealing poppet so that the valve will reseal on the poppet seat when closed after usage.

REFERENCES:
patent: 767098 (1904-08-01), Belden
patent: 2574414 (1951-11-01), Ragland
patent: 2727532 (1955-10-01), Sousa et al.
patent: 3508577 (1970-04-01), Vincent et al.
patent: 3521853 (1970-07-01), Gillis, Jr. et al.
patent: 3802660 (1974-04-01), Fletcher et al.
patent: 3951379 (1976-04-01), Cornelius
patent: 4243202 (1981-01-01), Inamura
patent: 4630642 (1986-12-01), Detweiler

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