Importance

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Abstract

An inlet valve and a discharge valve are operatively coupled by a coupling element so that when the discharge valve is closed, the inlet valve is open, and when the inlet valve is closed, the discharge valve is open. A biasing element biases the inlet valve closed. Upon closure of the discharge valve, a releasable retaining element retains the inlet valve open and the discharge valve closed against the action of the biasing element, thereby enabling the inlet valve to fill a tank with a fluid. A float responsive to the level of fluid in the tank engages and releases the retaining element when the tank is full, thereby enabling the biasing element to close the inlet valve and open the discharge valve, thereby discharging the fluid from the tank. In one aspect, the retaining element comprises a clamp mechanism that releasably clamps either the coupling element, the inlet valve, or the discharge valve. In another aspect, the coupling element comprises a rod in translation and the retaining element comprises a latch mechanism operatively coupled thereto.

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First Claim