Hidroconta, S.A.

Pilots

The pressure relief pilot sets the maximum tare pressure limit through a set screw. If the upstream pressure exceeds the set pressure, the valve is opened by communicating the valve chamber to the atmospheric pressure, so it relieves excess pressure in the line.

Functioning

The pilot regulates the opening of the valve according to the dierential pressure, providing the pre-set flow rate and maintaining the constant flow rate. By actuating the screw of the pilot's tare it is possible to vary the flow rate. With two sensors, installed on both sides of an orifice plate that produces a certain pressure drop, the circulating flow is obtained, closing the hydraulic valve partially until just a determined flow in case of overcome the predetermined flow.