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Class Information
Number: 137/315.32
Name: Fluid handling > With repair, tapping, assembly, or disassembly means > Assembling or disassembling reciprocating valve > Gate valve > Having particular valve seat > Including seal
Description:










Patents under this class:

Patent Number Title Of Patent Date Issued
5301712 Slide valve Apr. 12, 1994
4625754 Valve bonnet closure Dec. 2, 1986
4512359 Valve mechanism with replaceable seal rings Apr. 23, 1985
4246928 Restricted movement valve seats for an expanding gate valve Jan. 27, 1981
4230299 Pressure balanced gate valve having selective actuator systems Oct. 28, 1980











 
 
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