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Actuators

Model 1000 ActuatorsPneumatic Diaphragm — Spring Opposed

Designed specifically for severe duty service, model 1000 actuators can be used in any application where shock and/or vibration are anticipated, or where seismic analysis is required. They are available with 60, 100, 160 260 and 400 in
2 (390, 645, 1030, 1680 and 2580 cm
2 ) of effective diaphragm area in both the direct and reverse acting mode. All models are avail- able with manually operated override wheels.To illustrate how the actuator transmits force, the shaded areas shown in the diagrams below will move during the direct and reverse acting modes. (Note the position of the diaphragm plate in each case.) Conversion of the actuator from direct to reverse acting is accomplished simply by unfastening the diaphragm base from the frame and rotating it 90° until it is positioned above the threaded holes in the yoke.The actuator can be returned to the direct acting mode by reversing the procedure. Stem changes may be required.
Direct ActingReverse Acting Valve ClosedValve OpenValve OpenValve Closed 9