Electro-Pneumatic Systems

Series EP-55 Electro-Pneumatic Actuator Control System

This control system is a totally self contained power and control source to drive either linear or quarter-turn pneumatic valve actuators. Only a 120-vac power source is needed.

This model is equipped with complete electronic controls for “Fail Safe” or double acting actuation. It is a totally self contained unit with an electric motor, starter, air pump, direction control valves, and electrical controls. The nominal pressure range of 80-1 OO-psig offers the customer the ability to size a pneumatic actuator based upon a reliable air supply source. “Fail Safe” action can be achieved by using a spring return actuator or by using an air accumulator system with a double acting actuator.

These units are ideal where there is little or no air pressure available and there is a need for valve automation. Further, this unit is very cost effective when higher torques or thrusts are required in lieu of electric actuators. A pressure switch controls the compressor. Once the command to “Open” or “Close” is given, the EP-55 will automatically cycle and then shut itself off. Controls for both “Local” and “Remote” operation are standard with a pilot light array.

Series EP-55B Electro-Pneumatic Actuator Control System

This control system is similar in function to the Series EP-55. However, its purpose is to operate actuators with a relatively small volumetric displacement with less frequent cycling requirements. It comes in a NEMA 4X FRP (fiberglass reinforced polyester) enclosure and can be either wall-mounted away from the actuator or mounted directly onto the valve/actuator assembly.