| Partakers of electric and pneumatic actuators. Pneumatic was divided into single acting (spring return) and double-acting pneumatic, for example,. Driven by compressed air screw driven by the turning of the stem. (1) to choose depending on the size of the gas source (instrument air) actuator. Turn the valve torque required is too small to turn no more, too much not long valve life. General torque to stay out of the 30% margin on OK. Installation platform, there are standard, as long as the valve to find the standard can not go wrong. |
