ZDE3 valves are direct operated pressure reducing proportional valves with mounting interface in compliance with ISO 4401 (CETOP RP121H) standards.

These valves are used to reduce pressure in the secondary circuit branches thus ensuring stability of controlled pressure in the event of variations of the flow rate through the valve.

The valve can be controlled directly by a current control supply unit or by means of the relative electronic control units to exploit valve performance to the full.