Diaphragm actuated valve assembly

Details Diaphragm actuated valve assembly Diaphragm actuated valve assembly

1990-04-25

1991-01-29

Walton, George L.

Fluid handling

With cleaner, lubrication added to fluid or liquid sealing...

Cleaning or steam sterilizing

152565, 92 98D, 251 3003, 251 3005, 251 46, F16K 3106, B08B 900, F16K 5100

Patent

active

049879200

ABSTRACT:
A pilot operated, diaphragm actuated fluid valve assembly having an annular main valve seat with a tapered annular surface disposed therearound. A movable diaphragm has a generally flat central main valving surface thereon and an integrally formed annular wiper extending outwardly therefrom. The annular wiper contacts the tapered annular surface a relatively small distance before the main valving surface contacts the main valve seat.

REFERENCES:
patent: 1621638 (1927-03-01), McIntyre et al.
patent: 2623542 (1952-12-01), Obermaier
patent: 2784732 (1957-03-01), Nurkiewicz
patent: 3593956 (1971-07-01), McCarty, Jr.
patent: 3672627 (1972-06-01), McCarty, Jr. et al.
patent: 3768771 (1973-10-01), Dicken, Jr.
patent: 3918477 (1975-11-01), Grams
patent: 4387878 (1983-06-01), Zukausky
patent: 4500067 (1985-02-01), Zukausky
patent: 4844112 (1989-07-01), Pick et al.

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