Electric pneumatic control valve which good?

Electric pneumatic control valve which good? Manufacturer of electric pneumatic - valve products very much, and the product has many advantages, by using frequency is very high. Its performance in the development of science and technology driven, but in order to make the product update security and ease to use, not only need to select the regular manufacturers, when buy and at the time of operation must be carried out in accordance with the instruction guidance! Electric pneumatic control valve movement theory, motor power 220 vac or 380 vac, control signal 4 ~ 20 ma, valve controller, the controller convert current signal to the Angle of the stepper motor trip signal, motor rotation, by gears, levers, or gear lever, drive the stem, straight stroke or Angle of stroke. Electric pneumatic control valve feedback: the motor running, through the gear run, valve positioning signal output by SanJieTou slide rheostat, in addition to the three thread limit signals. Electric pneumatic control valve should be how to install? Electric pneumatic control valve is suitable for the installation work piston top at the bottom of the horizontal line. Temperature sensor can be installed in any position, the length must be immersed into the accused of medium. Electric pneumatic control valve generally includes drive, receive the drive signal ( 0 - 10 v or 4 - 20MA） Adjusted to control the valve, can also according to the need of control, intelligent network control system, optimization control to realize remote monitoring. Warm prompt: the development of electric pneumatic - valve product depends on the progress of science and technology, today's products, it has been used in many industries. But I don't mean it at the time of installation and use can be simple operation, but also should be careful operation!