Valve unit for controlling the delivery of a combustible gas
AssigneeSit la Precisa S.p.A.
InventorsSalvatore Pappalardo, Giuseppe Veronese
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Abstract
A valve unit for controlling the delivery of a combustible gas through a gas path comprises a first valve seat in the gas path and a first closure means associated with the seat, a first actuator means for the control of the closure means for opening and closing of the valve seat and also motor means for the operating control of the first actuator means. The unit further comprises a second electromagnetic actuator means interposed between the closure means and the first actuator means to urge the closure means so as to close the valve seat, independently of the operating position of the first actuator means, when a predetermined condition occurs which requires the interception of the valve seat.
Claims28
A valve unit for controlling the delivery of a combustible gas, including a gas path between a feed opening and a delivery opening, the unit comprising:
- a first valve seat in said gas path and a first closure means associated with said first seat,
- a first actuator means for the control of said first closure means for opening and closing said first valve seat,
- motor means for the operating control of said first actuator means, characterized in that they comprise a second electromagnetic actuator means interposed between said first closure means and said first actuator means to urge said first closure means so as to close said first valve seat independently of the operating position of the first actuator means, when a predetermined condition occurs which requires the interception of said first valve seat.
Dependencies are inferred from the claim text.