Two stage variable flow valve assembly

Details Two stage variable flow valve assembly Two stage variable flow valve assembly

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 1/44 (2006.01) B67D 7/36 (2010.01) B67C 3/28 (2006.01) F16K 1/54 (2006.01)

Patent

CA 2236510

A two stage variable flow valve assembly for use in fluid handling. The valve assembly includes a body with a flow restrictor disposed therein to define two internal chambers which are closed at one end by a wall and open at the opposite end by a discharge opening. A valve having a bulb and a profiled valve stem extends axially through and is movable within the internal chambers to open and close the valve assembly for flow therethrough. Flow is halted through the valve assembly when a portion of the profiled valve stem enters the flow restrictor, prior to the bulb's closing of the discharge opening.

Vanne à débit variable à deux phases servant à commander le débit d'un fluide. Un réducteur de débit logé dans le corps de la vanne forme deux chambres internes ayant une extrémité fermée par une paroi et une extrémité opposée ouverte, dotée d'un orifice d'évacuation. La vanne comprend également un obturateur et une tige profilée qui se prolonge de façon axiale dans les chambres internes et s'y déplace afin d'ouvrir et de fermer la vanne pour commander l'écoulement du fluide dans les chambres. Le débit est interrompu lorsqu'une partie de la tige de vanne profilée pénètre dans le réducteur de débit avant que l'obturateur ne ferme l'orifice d'évacuation.

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