High pressure diaphragm valve

Details High pressure diaphragm valve High pressure diaphragm valve

1998-06-26

2000-02-22

Lee, Kevin

Fluid handling

Processes

251331, 251284, 251 64, F16K 31126

Patent

active

060268360

ABSTRACT:
A diaphragm valve including structure which incorporates a support surface positioned to limit extension away from a main valve seat of a valve seat closure diaphragm. Alternative embodiments have the support surface formed on an insert within the valve housing, and formed as part of the interior surface of a wall of the housing. Alternatives for conveying control pressure to the side of the seat closure diaphragm adjacent the support surface include forming the surface on a body of porous material, and forming the surface with a channel which communicates with a relief port. Inclusion of a support surface minimizes stress and strain in the closure diaphragm when the valve is in an open state, thereby increasing the allowable valve working pressure.

REFERENCES:
patent: 3511472 (1970-05-01), Zimmerman
patent: 3556465 (1971-01-01), Little
patent: 4014514 (1977-03-01), Priese et al.
patent: 4171792 (1979-10-01), Bass
patent: 4475711 (1984-10-01), Rountry
patent: 5104090 (1992-04-01), Grizzle et al.
patent: 5335691 (1994-08-01), Kolenc
patent: 5383646 (1995-01-01), Weingarten
patent: 5722638 (1998-03-01), Miller et al.
Honeywell Brochure Form No. 60-2080-8 (Rev. 9-94); entitled "V48A,F,J; V88A,J Diaphragm Gas Valves".
Honeywell Brochure Form No. 65-0212-1 (Rev. 10-97); entitled "V4943A/V8943A On/Off Diaphragm Gas Valves".
Honeywell Brochure Form NO. 65-0214-1 (Rev. 10-97); entitled V4943/V8943B,C,N; V4944/V8944B,C,L,N Regulating Diaphragm Gas Valves.

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