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Rotating the check valve disk 2011-12-20
A check valve for use in a GDCS of a nuclear reactor and having a motor driven disk including a rotatable armature for r
Improved check valve plastic tubing 2011-12-19
An improved check valve of rigid plastic tubing of inexpensive fabrication. The check valve is made of plastic tubing in
Check valves provide sealing 2011-12-16
In automobile windshield washer pumps, for example, it is common practice to employ check valves to control connection b
Provide a check valve 2011-12-15
More specifically, it is an object of the present invention to provide a check valve for a metering device having a negl
Piston-type check valves 2011-12-14
A multitude of different types of check valves have been used to pass fluid in one direction through a conduit and block
An improved check valve 2011-12-13
In carrying out the above object, a check valve according to the invention has a cage including a tubular wall having an
A presently preferred check valve 2011-12-12
This invention is principally concerned with improvements in check valves for fluid flow control at the discharge of a p
A relief valve device 2011-12-09
Two check valves in series with a zone between them are mounted between the supply pipe and discharge pipe, and a relief
