US PATENT SUBCLASS 137 / 596.12
.~.~ With bypass

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

561 R  DF  SYSTEMS {32}
596  DF  .~ Supply and exhaust {4}
596.12.~.~ With bypass {1}
596.13  DF  .~.~.~> Controlled by supply or exhaust valve

DEFINITION

Classification: 137/596.12

(under subclass 596) Device including an additional valve to connect the upstream side of the main valve directly to exhaust so that the fluid does not pass through a downstream port of the main valve.