The internal thread pneumatic ball valve and butt welded pneumatic ball valve are divided into integral type (one piece type), two-stage type and three-stage type. The valve body casting adopts the advanced technology introduced from Taiwan, with reasonable structure and beautiful appearance. The valve seat adopts elastic sealing structure, with reliable sealing and easy opening and closing. The valve rod adopts a bottom mounted structure with reverse seal, and the valve rod will not be flushed out when the valve chamber is abnormally pressurized. Two piece and three piece pneumatic ball valves are also connected by butt welding (BW) and socket welding (SW), and can be equipped with international standard ISO support platforms and locking devices. 90 switch positioning mechanism can be set and locked as required to prevent misoperation. Drive mode: manual, electric, pneumatic.

5. The implementation of soft start can avoid the impact on the valve, gradually adjust the valve opening at a low speed with the smallest torque, and use flexible soft start to greatly reduce the starting current, even if the load changes very frequently and causes a lot of starting times, the motor will not be burned. When approaching the set or limit position, the frequency converter starts to adjust the frequency and voltage of the motor power supply, reduces the motor speed, and slowly reaches the position at a minimum speed to avoid the application of electric braking function due to excessive adjustment and collision of inertia on the valve, so that the output torque of the actuator will never exceed the originally set turning off torque.