Valves and valve actuation – Mechanical movement actuator – Particularly packed or sealed
Patent
1993-02-25
1994-03-29
Rivell, John
Valves and valve actuation
Mechanical movement actuator
Particularly packed or sealed
251282, 251324, 277 59, 277 64, 277112, F16K 3902, F16K 112
Patent
active
052977773
ABSTRACT:
A flow control valve for instant on-off operations with gases or liquids at relatively high pressures, such as pressures between 10,000 psi and 100,000 psi. The valve includes a valve body having two or more valve cavities in communication with each other and defined by two end seal assemblies and one or more valve port seal assemblies. An elongated, round, sliding valve stem is centrally located through the seal assemblies. End plugs are used to support the end seal assemblies. The valve stem has fluid passages which are preferably machined at a mid-section of the valve stem. The valve stem is slid parallel to its longitudinal axis to allow or prevent communication between the valve cavities by way of the fluid passage of the valve stem. Two opposite ends of the valve stem are either not exposed to the working fluid or are exposed to different pressures of the working fluid. With both opposite ends of the valve stem not being exposed to the working fluid, fluid-induced forces of relatively high magnitude are not exerted on the valve stem.
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One page advertisement from Hydro Manufacturing & Sales, P.O. Box 308, Missouri City, Texas 77459.
Applicant's three sketches describing hand-operated waterjet lance sold by Applicant on Jul. 7, 1989.
Jetec Company
Rivell John
LandOfFree
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