Valves and valve actuation – Balanced valves – Rotary
Patent
1977-04-26
1981-10-06
Schwadron, Martin P.
Valves and valve actuation
Balanced valves
Rotary
251214, 251315, F16K 3900
Patent
active
042931630
ABSTRACT:
A valve arrangement includes spherical core means rotatably mounted in a tubular member with operating means connected to the spherical core means and rotatably supported in a lateral opening in the tubular member to open and close the spherical core means for controlling flow through the tubular member. Seal means are provided between the spherical core means and tubular member and between the operating means and the tubular member with the operating means and the spherical core means having fluid passage means to conduct fluid from the tubular member fluid passage to act on the seal means between the operating means and the tubular member to substantially counterbalance the fluid pressure in the tubular member.
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patent: 3281112 (1966-10-01), Walker
patent: 3430919 (1969-03-01), Frazier
Hayden Jack W.
Schwadron Martin P.
Texas Iron Works, Inc.
Walton G. L.
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