1.This model uses a pneumatic actuator to compress the internal tube, providing either on/off or adjustable control of the valve. 

2.The appearance of the valve body and the painted surface are smooth. 

3.The process of lining the inner tube includes both molding and manual work.

4. It can be equipped with various components, such as a positioner (for remote control), solenoid valve, limit switch, gas source filter, junction box, etc. 

5.Since the rubber sleeve is the only part in contact with the medium, different rubber sleeves with different properties can be used for different working conditions, making them suitable for a wide range of complex working conditions (product features: high wear resistance, corrosion resistance, stability, etc.).