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Class Information
Number: 137/308
Name: Fluid handling > Hydrant type > Protection against freezing > Stop and waste > Reciprocating relatively fixed valves > Waste through lower valve guide
Description: Apparatus in which the drain passage is through a guide channel for a valve extension or the valve stem or actuator projection and below the normal travel limits of the valve.










Patents under this class:

Patent Number Title Of Patent Date Issued











 
 
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