Diaphragm valve

F - Mech Eng,Light,Heat,Weapons – 16 – K

Patent

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Details

F16K 7/16 (2006.01) F16K 11/02 (2006.01) F16K 11/20 (2006.01) F16K 11/24 (2006.01)

Patent

CA 2165425

A diaphragm valve for controlling a flow of gaseous or liquid fluid and including a valve housing (101) having a valve chamber (102), into which opens a central channel (104) and on each side thereof a first side channel (103) and a second side channel (104), respectively, having each an external connection (106, 107, 108) for fluid, valve seat means (110a, 110b) arranged in the housing, an elastic diaphragm (112) adapted to be brought into and away from sealing contact with at least one of the valve seat means, and control means (117, 118) for actuating the diaphragm. At least one portion of each valve seat means (110a, 110b) is common to the central channel (104) and one of the side channels (103, 104). Two control means (117, 118) are arranged on one hand to press the diaphragm (112) against of such portion each, thereby to shut off the passage of fluid between the central channel and the respective side channel, on the other to raise one portion each of the diaphragm off the respective portion of the valve seat means thereby to open passage of flow between the central channel and the respective side channel.

Soupape à diaphragme régulant le débit d'un fluide gazeux ou liquide, comportant un corps (101) comprenant une chambre (102) dans laquelle s'ouvre un conduit central (104) et de chaque côté dudit conduit un premier (103) et un second (104) conduit latéral présentant chacun un raccord extérieur (106, 107, 108) pour le fluide, des sièges de soupapes (110a, 110b) ménagés dans le coprs, un diaphragme élastique (112) conçu pour obturer hermétiquement ou laisser libre au moins l'un des sièges de soupapes et des moyens de commande (117, 118) du diaphragme. Un partie au moins de chaque siège de soupape (110a, 110b) est commune au conduit central (104) et à l'un des conduits latéraux (103, 104). Les deux moyens de commande (117, 118) ont pour fonction: d'une part de plaquer une partie du diaphragme (112) contre le siège lui correspondant et donc d'obturer le passage du fluide entre le conduit central et leur conduit latéral respectif, et d'autre part de lever chacun la partie du diaphragme correspondant à leur siège respectif de façon à libérer le passage du fluide entre le conduit centre et leur conduit latéral respectif.

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