F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
F16K 31/00 (2006.01) C03B 9/40 (2006.01) F15B 13/04 (2006.01) F15C 3/06 (2006.01) F16K 11/056 (2006.01) F16K 15/18 (2006.01) F16K 25/00 (2006.01) B29C 49/42 (2006.01) B29C 49/78 (2006.01)
Patent
CA 2357912
A high-pressure primary fluid control valve and a multi-pressure selector fluid control valve are disclosed for operating a fluid-actuated device. Preferably a spherical ball-poppet and frusto-conical valve seat adapted for substantially line-contact therebetween are provided with an upstream flow area adjacent the line-contact in order to substantially minimize sonic flow damage to the actual sealing surface of the valve seat by shifting it away from such line-contact seating. Preferably, the ball-poppet is movable within a poppet guide that is allowed to float radially in order to allow the ball-poppet to be substantially self centering with respect to the valve seat. In addition, cross-over leakage is preferably negated by closing an exhaust ball- poppet just prior to opening a supply ball-poppet. These principles and features are equally applicable to either or both of the primary or the multi-pressure selector fluid control valves.
Macrae & Co.
Ross Operating Valve Company
LandOfFree
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