The modulating control valves of the newly
conceived 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.