US PATENT SUBCLASS 251 / 327
.~.~ Bifaced

Current as of: June, 1999
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251 /   HD   VALVES AND VALVE ACTUATION

318  DF  RECIPROCATING VALVE {7}
326  DF  .~ Gate {3}
327.~.~ Bifaced

DEFINITION

Classification: 251/327

(under subclass 326) Devices wherein the valve head has two seating faces.

SEE OR SEARCH THIS CLASS, SUBCLASS:

302, for pivoted bifaced valves.