In cases like this we have been discussing rotary ninety degree switch Pneumatic Actuators (You may as well get linear as well) which are meant to switch a valve (commonly ball, butterfly or plug) by means of ninety diploma rotation (open up and close). Pneumatic air pressure is employed to https://pneumaticactuator80896.dailyblogzz.com/17496855/top-guidelines-of-pressure-gauge-4