Dwyer Instruments, Inc.
The pneumatic actuated valve can be double acting, spring return normally closed or normally open. The double acting model uses two supply ports (1/8˝ NPT) with one driving the valve open and the other driving the valve closed. Normally closed spring return pneumatic actuated models use the air supply to open the valve and internally loaded springs return the valve to the closed position. The normally open spring return model uses the air supply to close the valve and internally loaded springs return the valve to the open position. Series CVA Compact Valve and Actuators are competitively priced starting at $134.00.