US PATENT SUBCLASS 251 / 317.01
.~.~.~ Carried by head

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

304  DF  ROTARY VALVES {5}
314  DF  .~ Seat or interface seal {1}
316  DF  .~.~ Replaceable {2}
317.01.~.~.~ Carried by head

DEFINITION

Classification: 251/317.01

Carried by head:

(under subclass 315.18) Seat or interface seal particularly adapted to be attached to the spherical head of the ball valve.