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1. (WO1992009835) DIAPHRAGM VALVE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1992/009835 International Application No.: PCT/GB1991/001973
Publication Date: 11.06.1992 International Filing Date: 11.11.1991
IPC:
F16K 7/12 (2006.01) ,F16K 41/10 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
K
VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
7
Diaphragm cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage
12
with flat, dished, or bowl-shaped diaphragm
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
K
VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
41
Spindle sealings
10
with diaphragm, e.g. shaped as bellows or tube
Applicants:
SAUNDERS VALVE COMPANY LIMITED [GB/GB]; Grange Road Cwmbran Gwent NP44 3XX, GB (AllExceptUS)
RAIKES, Robert, Reginald [GB/GB]; GB (UsOnly)
Inventors:
RAIKES, Robert, Reginald; GB
Agent:
SPENCER, Graham, Easdale ; A.A. Thornton & Co. Northumberland House 303-306 High Holborn London WC1V 7LE, GB
Priority Data:
9025531.623.11.1990GB
Title (EN) DIAPHRAGM VALVE
(FR) ROBINET A MEMBRANE
Abstract:
(EN) A diaphragm valve (1) comprises a valve body (2) defining a diaphragm opening (4) and a valve seat (9); a valve bonnet (5) secured to the valve body; a diaphragm (7) closing the diaphragm opening, the peripheral zone (10) of the diaphragm being compressed between the valve body and the valve bonnet to maintain the diaphragm in sealing engagement with the valve body around the diaphragm opening; and an operating mechanism (8) for moving the diaphragm into sealing engagement with the valve seat to close the valve to fluid flow and away from the valve seat to open the valve to fluid flow. The peripheral zone of the diaphragm comprises a relatively thick radially inner portion (11) and a relatively thin radially outer portion (12) both of which are compressed between the valve body and the valve bonnet, at least one of the valve body and the valve bonnet being stepped to accommodate the changes in thickness of the diaphragm.
(FR) Un robinet à membrane (1) comprend: un corps de robinet (2) qui définit une ouverture à membrane (4) et un siège (9); un chapeau (5) fixé au corps du robinet; une membrane (7) qui referme l'ouverture à membrane, la zone périphérique (10) de la membrane étant comprimée entre le corps et le chapeau du robinet pour ainsi maintenir la membrane en contact hermétique avec le siège afin d'arrêter l'écoulement de liquide à travers le robinet et pour écarter la membrane du siège afin de permettre l'écoulement de liquide. La zone périphérique de la membrane comprend une partie intérieure (11) relativement épaisse dans le sens radial et une partie extérieure (12) relativement mince dans le sens radial, les deux parties étant comprimées entre le chapeau et le corps du robinet. Au moins le corps ou le chapeau est à gradins pour permettre l'adaptation aux variations d'épaisseur de la membrane.
Designated States: JP, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0513268JPH05501001GB2250081