Barber Colman EA81 Proportional Hydraulic Linear Actuator

The Model EA81 is a hydraulic valve actuator with a linear stroke for proportional control of small valves that require return to normal position on power interruption. The permanently sealed oil-filled case contains a moveable hydraulic system. The electric pump/motor, powered continuously by the input supply voltage, generates fluid pressure opposed by

the spring of the damper or valve linkage. The EA81 is available in two models, a 4-20mAdc input and a 135Ohm slidewire input. The control signal is compared to measured shaft position in the actuator controller circuit and the output generates proportional positioning of the valve shaft. The unit supplies a force of 150 pounds for a linear stroke and operates on 120Vac, 50/60Hz. The linkage kit and extension, model AV-611, provides linkage to 1/2” to 1-1/4” valve sizes.

The EA81 is compatible with the VB-7000 valves in this catalog.