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Class Information
Number: 137/505.22
Name: Fluid handling > Line condition change responsive valves > With separate connected fluid reactor surface > With opening bias (e.g., pressure regulator) > Through external pipe
Description: Devices in which the pressure fluid is communicated to a chamber enclosing the reactor surface through a pipe external of the chamber.










Sub-classes under this class:

Class Number Class Name Patents
137/505.24 Adjustable external lever 3
137/505.23 Modified valve casing 3


Patents under this class:

Patent Number Title Of Patent Date Issued
8371329 Pilot device with remote pressure control for gas pressure regulators Feb. 12, 2013
8356624 Self-operated pressure transmission type of pressure reducing valve with corrugated pipe Jan. 22, 2013
7343928 Regulator insert with hydraulic damping in outlet Mar. 18, 2008
6488046 Pressure reducer for compressed gases Dec. 3, 2002
6131595 Automatic back water valve system Oct. 17, 2000
5522421 Fluid pressure regulator Jun. 4, 1996
5509449 Control of fluids Apr. 23, 1996
5466064 Fuel homogenization system with dual compensating homogenization valves Nov. 14, 1995
5456282 Pressure reducing regulator Oct. 10, 1995
5238021 Diaphragm operated spring loaded regulator Aug. 24, 1993
4796652 Pressure regulator for hydraulically controlled machine tools Jan. 10, 1989
4776368 Fluid pressure regulator Oct. 11, 1988
4770153 Pneumatic weapon with pressure reduction valves Sep. 13, 1988
4540016 Flow-control system with pressure-responsive valve Sep. 10, 1985
4493558 Compensating valve system for controlling adjustable emulsifying orifice Jan. 15, 1985
4044792 Diaphragm operated pressure regulator Aug. 30, 1977
4018418 Flow governor Apr. 19, 1977
4011734 Cryogenic pressure regulator Mar. 15, 1977
3958599 Remote sensing regulator and shutoff valve for valve manifolds May. 25, 1976











 
 
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