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Class Information
Number: 137/306
Name: Fluid handling > Hydrant type > Protection against freezing > Stop and waste > Separate relatively movable valves with single actuator > With screw or gear in actuating mechanism
Description: Apparatus in which the valve actuator includes a screw or gear interposed between the main valve and the waste valve.










Patents under this class:

Patent Number Title Of Patent Date Issued











 
 
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