Importance

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Abstract

A valve device includes an inlet, an outlet connected to the inlet, a valve member having an open position in which fluid can pass from the inlet to the outlet, and a closed position in which fluid cannot pass from the inlet and the outlet, and an actuator. The actuator selectively actuates the valve member, and has an open actuator position and a closed actuator position. The valve has a first operating mode in which, over a whole of the range of operating values of the inlet pressure, the actuator is fixed in the open actuator position and the valve member is in the open valve position. In a second operating mode, the actuator switches from the closed actuator position to the open actuator position, switching the valve member from the closed valve position to the open valve position, when the inlet pressure exceeds a second threshold inlet pressure.

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First Claim