Relief valve including a check valve in a damping chamber

Details Relief valve including a check valve in a damping chamber Relief valve including a check valve in a damping chamber

2011-03-29

2011-03-29

Rivell, John (Department: 3753)

Fluid handling

Line condition change responsive valves

Direct response valves

C137S514500

Reexamination Certificate

active

07913715

ABSTRACT:
A relief valve includes a body, a damping chamber in the body, a poppet in the body, wherein the poppet includes an end in the damping chamber, and a check valve in the damping chamber. The damping chamber is located adjacent an inlet side of the relief valve, and the check valve includes a sealing member to prevent fluid flow into the damping chamber at the inlet side. The sealing member is unseated during opening of the poppet to permit fluid to flow into the damping chamber at the inlet side.

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International Search Report dated Jan. 21, 2009 for International Application No. PCT/US 08/82468.

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