Moving check valve seat providing high pressure relief

Details Moving check valve seat providing high pressure relief Moving check valve seat providing high pressure relief

1999-06-21

2000-10-17

Fox, John

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

137508, F16K 3112

Patent

active

061316067

ABSTRACT:
A fluid control device is disclosed which is capable of permitting flow through the fluid control device in response to a control signal and in response to a predetermined high pressure. The fluid control device includes a valve body having a first end, a second end, and a bore extending between the first end and the second end. A plurality of inlet ports extend from the valve body into the bore. A moveable sleeve is located within the bore and includes a check valve seat. A valve rod extends from the first end of the valve body into the sleeve and sealingly engages the check valve seat. The sleeve and associated check valve seat is moveable out of sealing engagement with the valve rod in response to a predetermined pressure within the inlet ports. In addition, the valve rod can be moved out of sealing engagement with the check valve seat in response to actuation of a solenoid armature that is in contact with the valve rod. Thus, the fluid control device includes two mechanisms for permitting flow of fluid through the fluid control device.

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