Membrane valve for fluids

Details Membrane valve for fluids Membrane valve for fluids

1988-05-10

1990-05-15

Cohan, Alan

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

251 45, 251331, 25112921, F16K 707

Patent

active

049251538

ABSTRACT:
A tubular membrane-tight flow valve features a waisted support body for the membrane which seals against an annular sealing surface at the waist of the support body. This special shape of the support body is effective in avoiding closing hammer. In the preferred embodiment the membrane is made fractionally longer than the waisted support body and this results in extremely quiet operation of the valve.

REFERENCES:
patent: 2622620 (1952-12-01), Annin
patent: 3118646 (1964-01-01), Markey
patent: 3325138 (1967-06-01), Connolly
patent: 3467131 (1969-09-01), Ratelband
patent: 3624801 (1971-11-01), Gannon
patent: 3836113 (1974-09-01), Johnson
patent: 3840207 (1974-10-01), Carpenter, Jr.
patent: 4056965 (1977-11-01), Heiser
patent: 4451023 (1984-05-01), Zakai

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