Dual energized hydroseal

Details Dual energized hydroseal Dual energized hydroseal

2006-07-11

2006-07-11

Neuder, William (Department: 3672)

Wells

Valves, closures or changeable restrictors

Fluid operated

C166S169000, C166S334400

Reexamination Certificate

active

07073590

ABSTRACT:
A bi-directional seal assembly can be used in various types of cartridge valves including dirty fluid valves and a variety of other valves. The present seal assembly utilizes a seal spool, two O-rings and opposing seal cups. Back-up rings are provided to engage the O-rings to control deformation of the O-rings. The O-rings are compressed during manufacture of the seal assembly and the valve more than typically recommended by O-ring manufacturers. Because of this compression, the O-rings serve a dual function. At lower pressures, the O-rings act as a spring causing the seal cups to contact the opposing seal plates and at higher pressures they act as seals between the seal assembly and the valve.

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