Pneumatic bellows regulating valve

Pneumatic bellows regulating valve is a top guided structure regulating valve with a compact valve body structure, S-shaped fluid channel, low pressure drop loss, large flow rate, and wide adjustable range. The upper valve cover adopts a bellows sealing structure, which can completely eliminate the possibility of process medium leaking outward from the clearance of the valve stem movement, which is one of the significant features of bellows sealed valves. Due to the deformability and good aging resistance of the bellows element itself, this type of regulating valve completely overcomes the weaknesses of packing aging and temperature difference sensitivity that usually exist in packing seal valves. Secondly, the double sealing structure of corrugated tube and packing is adopted for better safety and reliability. Therefore, it is widely used in automatic control systems for rare and special media such as highly toxic, highly corrosive, and radioactive substances. The valve core has a large guiding area and good vibration resistance. It is equipped with a multi spring thin film actuator, which has a compact structure and high output force.
Ordering Instructions for Pneumatic Bellows Control Valve
1. Product model and name
2. Nominal diameter DN (mm)
3. Nominal pressure
4. Requirements for traffic characteristics
5. Valve body material and internal components
6. Type of medium and temperature range
7. Pressure difference before and after the valve
8. Sealing form
9. Supporting accessories