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Class Information
Number: 137/476
Name: Fluid handling > Line condition change responsive valves > Pop valves > Adjustable choke > Annular lip or baffle
Description: Valves in which the adjustable member is an annular lip or baffle concentric with the valve inlet passage.

Sub-classes under this class:

Class Number Class Name Patents
137/477 On movable valve part 4
137/478 Screw threaded 14

Patents under this class:

Patent Number Title Of Patent Date Issued
8360095 High-pressure valve Jan. 29, 2013
6283138 Pressure relief valve monitoring device Sep. 4, 2001
6095183 Safety relief valve Aug. 1, 2000
5515884 Multi-media safety relief valve May. 14, 1996
4979540 Cartridge-type direct loaded safety and pressure-relief valve having flow path for preventing supersonic flow and minimizing valve hysteresis Dec. 25, 1990
4770204 Spring-loaded safety valve for gases and vapor Sep. 13, 1988
4708164 Safety relief valve Nov. 24, 1987
4036250 Blow-down safety valve Jul. 19, 1977
3945607 Pressure safety valve Mar. 23, 1976

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