Pneumatic actuators must choose a reasonable range of torque
pneumatic actuators must choose a reasonable range of torque
introduction of pneumatic actuators, the correct selection of
electric and pneumatic actuators have points.
in the case of pneumatic, pneumatic and single acting ( Spring return) And dual role. By compressed air driven screw drive the valve rod rotation.
1。 According to the source ( Instrument air) To choose the size of the actuator
2, pneumatic valve actuator output torque depends on the required torque
the valve opening and closing the required torque determines the output torque of electric actuator to choose how, generally is put forward by the user or by matching valve manufacturer, as the actuator manufacturer is only responsible for the output torque of actuators, normal valve opening and closing the required torque is determined by the valve diameter size, factors such as work stress, but because of the valve manufacturer processing precision, the assembly process, so that different manufacturer production of the same specification valve required torque is also different, even with a valve manufacturer production with specification valve torque is different also, was elected type actuator torque choice is too small will cause cannot normal opening and closing valves, pneumatic actuators must choose a reasonable range of torque. （ Shanghai jin ze xin pneumatic valve co. , LTD. )
2。 Turn spins the required torque, small, too big valve life is not long. General torque to set aside 30% of the surplus with respect to OK.
difference, when the user type actuator torque of choice is too small will cause cannot normal opening and closing valves, pneumatic actuators must choose a reasonable range of torque.
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keyword: pneumatic actuator