Proportional pressure valve pressure, piloted the pre10, pre25, pre32 are proportional valves regulatory of maximum pressure, piloted, for plate assembly. They are used to modulate the pressure of the hydraulic circuit and allow you to use the entire pump flow also to pressure values ​​close to the calibration value. These valves have a mechanical pressure limitation function in the pilot stadium in order to offer greater safety safety. They are equipped with maximum pressure valve. The calibration is performed in duplica to a value of ≥ 15% of the maximum pressure value in the regulation field. They are available in three sizes per flow rate up to 500 l/min and in five pressure adjustment fields up to 350 bar. They can be controlled directly by a controlled power supply in current, or by an electronic card, to be ordered separately.