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Class Information
Number: 137/304
Name: Fluid handling > Hydrant type > Protection against freezing > Stop and waste > Separate relatively movable valves with single actuator
Description: Apparatus in which the control valve and the drain valve are relatively movable but are operated by a single actuator.










Sub-classes under this class:

Class Number Class Name Patents
137/305 Unidirectional abutting connection between main valve or actuator and waste valve 4
137/306 With screw or gear in actuating mechanism 0


Patents under this class:

Patent Number Title Of Patent Date Issued
8640728 Fire hydrant control valve Feb. 4, 2014
5901738 Portable fire hydrant May. 11, 1999
4307746 Frost-proof fire hydrant Dec. 29, 1981











 
 
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