Check valve

Details Check valve Check valve

2005-03-15

2005-03-15

Krishnamurthy, Ramesh (Department: 3753)

Fluid handling

Line condition change responsive valves

Direct response valves

C137S513700, C137S542000, C251S337000

Reexamination Certificate

active

06866062

ABSTRACT:
A check valve for a compressed gas system. The valve has a body with an internal passage extending through the body and a valve seat positioned in the passage. A poppet is movable between a closed position in which the poppet engages the seat to block flow of gas through the passage and an open position in which the poppet is spaced from the seat to permit flow of gas. A retainer mounts the poppet in the passage and guides movement of the poppet. A spring urges the poppet to the closed position such that the poppet is responsive to pressure of the gas exceeding a predetermined value to move the poppet away from the seat against the urging of the biasing member and to the open position.

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