Importance

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Abstract

A water system uses a pressure reservoir of extremely small size. A valve device is placed between a water pump and the pressure reservoir. The valve device has a constant outlet pressure function to limit the flow from the pump at high pressures. The pump is turned on and off responsive to a pressure on/off switch located down stream of the valve device. The valve device maintains the pressure to the reservoir below the off switch pressure except for a dribble flow. The dribble flow fills the reservoir when there is little or no water usage from the reservoir. The dribble flow is achieved by a notch or groove in the valve surfaces of the valve device. Each time the valve opens any debris in the notch or groove is washed from the notch or groove thereby keeping the notch or groove free of debris.

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First Claim