Poppet diaphragm valve

Details Poppet diaphragm valve Poppet diaphragm valve

1990-04-23

1991-04-16

Rosenthal, Arnold

Fluid handling

Systems

Multi-way valve unit

25112917, 251282, F16K 3106, F16K 1102

Patent

active

050074580

ABSTRACT:
A solenoid actuated pneumatic valve (50) has a valve body (52). The valve includes an inlet (60), a first outlet (62) and a second outlet (64). The body has a first internal chamber (66) and a second internal chamber (68). The first and second chambers are connected through a first opening (80). The body also includes a third chamber (76) connected to the first chamber through a second fluid opening (84). A stem (88) extends through the first, second and third chambers and is coaxial with the first and second fluid openings. A first poppet diaphragm (112) is mounted on the stem in the second chamber. The poppet diaphragm includes a face (118) sized for blocking the first opening, and a convoluted web portion (120) which extends radially outward and attaches to the valve body. A second poppet diaphragm (130) is mounted on the stem in the third chamber. The second diaphragm has a face sized for blocking the fluid opening between the first and third chambers. An electric solenoid (108) moves the stem in response to changes in electrical condition. In a first condition, the first poppet diaphragm is disposed of the opening between the first and second chambers. Compressed air passes from the inlet to the first outlet while the second poppet diaphragm blocks the delivery of air to the second outlet. Changing the condition of the electric solenoid moves the stem so that the first poppet diaphragm blocks delivery of air to the first outlet and compressed air is directed to the second outlet.

REFERENCES:
patent: 3329165 (1967-07-01), Lang
patent: 4237931 (1980-12-01), Rafaely
patent: 4711269 (1987-12-01), Sule

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