Parallel-motion dual-diaphragm valve

Details Parallel-motion dual-diaphragm valve Parallel-motion dual-diaphragm valve

1989-03-06

1989-09-19

Rivell, John

Fluid handling

Systems

Multi-way valve unit

137594, 251331, 2513352, 251 77, F17D 504

Patent

active

048672017

ABSTRACT:
A valve (10) has a body (11) provided with two separate but parallel flow passages therethrough. A first diaphragm assembly (14) is held between a lower bonnet (12) and the body, and is movable toward and away from a seat (48). A second diaphragm assembly (15) is held between an upper bonnet (13) and the body. A follower (16) is arranged between the diaphragms. An actuator (20) is arranged to cause substantially parallel motion of the diaphragms in response to movement of the actuator.

REFERENCES:
patent: 1771410 (1930-07-01), Landis
patent: 2301428 (1942-11-01), MacNeil
patent: 2845084 (1958-07-01), Detlefson
patent: 3057378 (1962-10-01), Fennema et al.
patent: 3614057 (1971-10-01), Hospe
patent: 4010769 (1977-03-01), DeLorenzo et al.
patent: 4070004 (1978-01-01), Friswell
patent: 4750709 (1988-06-01), Kolnec et al.

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