The valve assures maximum water level into tanks and reservoirs and avoids overflow. The valve operate by means of a modulating float, mounted on tank, able to regulate gradual opening of the valve when water level goes down from maximum.
Italy
The valve maintains downstream pressure to a constant and pre-set rate of upstream value. No pilots needed. The valve chamber is directly exposed to the downstream pressure and this varying pressure value modulates the valve to open or close according to upstream pressure.
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