Diaphragm controlled bypass valve

Details Diaphragm controlled bypass valve Diaphragm controlled bypass valve

2008-05-08

2011-11-29

Fristoe, Jr., John (Department: 3753)

Fluid handling

Self-proportioning or correlating systems

Self-controlled branched flow systems

C137S087010, C137S118060, C251S077000

Reexamination Certificate

active

08066026

ABSTRACT:
A diaphragm controlled bypass valve includes a diaphragm valve portion and a needle valve portion. The diaphragm valve portion regulates pressurized gas supplied from a pump to determine whether or not to open or close a needle valve. The needle valve portion includes an inlet port, an outlet port and a flow pathway defined between the inlet and outlet ports. A needle pin is disposed within the flow pathway and is coupled to a diaphragm positioned within the diaphragm valve portion. When the diaphragm is displaced in response to changes in pressure, the needle valve pin is likewise displaced which opens and closes the flow pathway.

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