OVERVIEW
Mounted on control valves, HEP Electro-Pneumatic Valve Positioners model HEP18/19/28/29 control valve positions swiftly  and accurately by supplying or discharging air from pneumatic actuators in response to input signals from controllers.

FEATURES
Each model uses a pilot valve that features low air con-sumption and a high capacity.  Each single-action model has a stabilizer with three patterns of holes in a pilot base.  By rotation switching, it ensures highly sensitive and extremely stable operation with small- to large-capacity actuators.

HEP28/29
(Double action)
The magnet is a high-precision moving coil.  With a ter-minal box, it forms an explosion-proof structure.  To check the inside, the covers of these models can be removed during operation.

HEP18/19
(Single action)
The rare-earth metal magnet has excellent magnetic characteristics.  The moving coil is round and energized by a flat spring.  It requires no leads. Since each model is compact and lightweight, it can be
used with even a small actuator.  No piping is required ecause the model KZ03 pressure regulator with filter can be directly attached to the positioner.