The NAF-D30 is an intelligent valve positioner designed to operate pneumatic rotary valve actuators from control systems and electrical controllers with the analog control signal 4-20 mA, optionally superimposed by the HART communication signal.
It forms an integrated part in the NAF-Torex, NAF-Setball, and NAF-Duball control valve package with a unique direct mounting and does not require brackets. The air block between positioner and actuator means it is no longer needed to find SS fittings and bend SS tubing.