US PATENT SUBCLASS 137 / 625.28
.~.~ Dividing into parallel flow paths with recombining

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

561 R  DF  SYSTEMS {32}
625  DF  .~ Multi-way valve unit {12}
625.28.~.~ Dividing into parallel flow paths with recombining {4}
625.29  DF  .~.~.~> Valve with bypass connections
625.3  DF  .~.~.~> With metering feature
625.31  DF  .~.~.~> Rotary {1}
625.33  DF  .~.~.~> Reciprocating {2}

DEFINITION

Classification: 137/625.28

(under subclass 625) Devices comprising a single inlet or admission passage and a single outlet or exhaust passage, the passages being joined by a plurality of flow lines or passages controlled by a valve unit.

SEE OR SEARCH THIS CLASS, SUBCLASS:

309, for regenerative furnace reversing valves which similarly control flow.