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More particularly to an improved check valve 2011-12-23
The invention is particularly applicable to a valve that is extremely sensitive to low cracking pressures and will be de
A check valve with a housing having a valve seat 2011-12-22
There is a general need for devices preventing return flow, for instance under conditions of underpressure, in order to
A ball check valve with the seat and ring 2011-12-21
A ready-to-use valve assembly comprising three component parts, namely, a gasket ring having a valve seat, a ball check
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
