Isolation valve with valve in drain

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

Patent

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Details

F16K 11/087 (2006.01)

Patent

CA 2539958

A fluid isolation valve having a valve body with a first fluid flow port, a second fluid flow port and a fluid drain port with a valve in the fluid drain port. The valve body also defines a fluid flow channel, a drain flow channel and a valve portion, wherein the valve portion is disposed in the valve body to be communicated with the first fluid flow port, the second fluid flow port and the fluid drain port. A flow diversion device is also provided and is disposed within the valve portion. The flow diversion device is configurable between a first configuration and a second configuration, such that when the flow diversion device is in the first configuration the first fluid flow port is communicated with the second fluid flow port. Consequently, when the flow diversion device is in the second configuration the first fluid flow port is communicated with the fluid drain port. The fluid flow can be decrease or stop by use of the valve within the fluid drain port.

L'invention concerne une soupape de sectionnement, qui comprend un boîtier de soupape présentant un premier orifice d'écoulement, un second orifice d'écoulement, et un orifice de fuite muni d'une soupape. Le boîtier de soupape délimite également un circuit d'écoulement, un circuit de fuite et une partie soupape, cette dernière étant disposée dans le boîtier de soupape pour communiquer avec le premier orifice d'écoulement, le second orifice d'écoulement, et l'orifice de fuite. Un dispositif de déviation d'écoulement est également installé à l'intérieur de la partie soupape. Le dispositif de déviation d'écoulement est configurable entre une première configuration et une seconde configuration, si bien que lorsque le dispositif de déviation d'écoulement se trouve dans la première configuration, le premier orifice d'écoulement communique avec le second orifice d'écoulement. En conséquence, lorsque le dispositif de déviation d'écoulement se trouve dans la seconde configuration, le premier orifice d'écoulement communique avec l'orifice de fuite. Le débit peut être réduit ou arrêté au moyen de la soupape placée à l'intérieur de l'orifice de fuite.

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