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Class Information
Number: 137/516.19
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
Description: Valves wherein the post provides a valve stop or support such a stop.

Sub-classes under this class:

Class Number Class Name Patents
137/516.21 With guide 26

Patents under this class:

Patent Number Title Of Patent Date Issued
8240330 Squeeze film damper valve for compressor cylinders Aug. 14, 2012
5785081 Compressor inlet valve Jul. 28, 1998
5678603 Plate valve, particularly for piston compressors Oct. 21, 1997
4869289 Adjustable compressor valve which can accommodate changing operating conditions in the compressor to which it is attached Sep. 26, 1989
4858736 Shock absorber for a hydropneumatic vehicle suspension element Aug. 22, 1989
4360319 Compressor Nov. 23, 1982
4307751 Plate valve Dec. 29, 1981
4184818 Valve for piston compressors and pumps Jan. 22, 1980

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