US PATENT SUBCLASS 137 / 249
.~.~ Horizontally moving valve

Current as of: June, 1999
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137 /   HD   FLUID HANDLING

247  DF  WITH LIQUID VALVES OR LIQUID TRAP SEALS {3}
248  DF  .~ Seal for relatively movable valving parts {1}
249.~.~ Horizontally moving valve {1}
250  DF  .~.~.~> Rotary

DEFINITION

Classification: 137/249

(under subclass 248) Apparatus in which the movement of the valve has a component in a horizontal plane.

SEE OR SEARCH THIS CLASS, SUBCLASS:

309+, for reversing valves of the regenerative furnace type which do not have a liquid seat.