1. The air-controlled diaphragm valve can still be equipped with a deaf and dumb feedback signal, a limit device or a positioner to meet the needs of automatic control, program control or flow regulation;
2. The feedback signal of the pneumatic valve adopts non-contact sensing technology;
3. The film cylinder is used to replace the piston cylinder, which eliminates the drawbacks of the inability to open and close the valve due to the easy leakage of the piston ring;
4. When the air source fails, the valve can be opened by operating the handwheel.
