US PATENT SUBCLASS 137 / 310
.~ With cooling

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

309  DF  REVERSING VALVES - REGENERATIVE FURNACE TYPE {2}
310.~ With cooling

DEFINITION

Classification: 137/310

(under subclass 309) Reversing valves wherein a coolant, such as air or water, is circulated in heat exchange relation with the valve, valve seat, or operating parts thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

334+, for fluid handling systems having heating or cooling means and see the search notes to subclass 334.