Modulating control valves of the MDV-D1 series are built according to the EN 161 norms to be used on industrial combustion systems.

They are particularly suitable for the proportional regulation of all combustion gas flows of the first, second and third family and of air. The electric motor is unipolar and bidirectional, with high static and maintaining torque for 3-position-control, or proportional with analogic input control signal current or voltage change.

The exact linear rating is achieved by means of particular, patented shutter disks, rotating on the same axis. Six different orifice sizes are available according to the operating conditions.