Pneumatic snap pilot

Details Pneumatic snap pilot Pneumatic snap pilot

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 25/00 (2006.01) F16K 1/14 (2006.01) F16K 1/42 (2006.01) F16K 31/12 (2006.01)

Patent

CA 2389132

A snap pilot used to pneumatically energize and de-energize a control device, such as a valve. The pilot has two valves -- one to admit pilot pressure, and one to exhaust pressure. The pilot incorporates valves having an elastomeric seal but maintaining the precision of metal to metal contact. In the preferred embodiment, the elastomeric seal is an O-ring placed in a groove, without adhesive, having only a small amount of deflection when the seat is closed, whereby simultaneous metal-to-metal and elastomer-to-metal contact is achieved.

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