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Class Information
Number: 137/516.21
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type) > Single head, plural ports in parallel > Annular head > Central post on seat > Stop > With guide
Description: Valves wherein the post also provides guide means for the valve.










Patents under this class:

Patent Number Title Of Patent Date Issued
8662105 Suction valve with unloader Mar. 4, 2014
7540301 Compressor valve Jun. 2, 2009
6510868 Profiled plate valve Jan. 28, 2003
5785081 Compressor inlet valve Jul. 28, 1998
5669411 Compressor valve Sep. 23, 1997
5483992 Annular valve for a piston compressor Jan. 16, 1996
5287883 Valve, in particular for compressors Feb. 22, 1994
5275541 Fluid-operated valve for pumps and the like Jan. 4, 1994
5249595 Valve, in particular for a piston-type compressor Oct. 5, 1993
5174735 Low reexpansion valve system Dec. 29, 1992
5080565 Retainer for piston head subassembly and method of retaining piston head subassembly Jan. 14, 1992
5036880 High efficiency plate valve for reciprocating compressor Aug. 6, 1991
4913187 Compressor valve with flat spring Apr. 3, 1990
4889156 Compressor valve with flat spring Dec. 26, 1989
4869291 Compressor plate valve Sep. 26, 1989
4854341 Plate valve Aug. 8, 1989
4799507 Adjustable compressor valve which can accommodate changing operating conditions in the compressor to which it is attached Jan. 24, 1989
4723572 Compressor valve Feb. 9, 1988
4705068 Ported-plate, fluid control valve Nov. 10, 1987
4703772 Disk valve for a reciprocating compressor Nov. 3, 1987
4660744 Non-refillable fitment Apr. 28, 1987
4643220 Unidirectional fluid control valve Feb. 17, 1987
4632145 Lifting device for the closure plate of compressor valves Dec. 30, 1986
4627464 Unidirectional, fluid control valve Dec. 9, 1986
4016906 Anti-leak fuel pumps for vehicles Apr. 12, 1977
3945397 Plate valve Mar. 23, 1976











 
 
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