1. Power drive and valve control
Power conversion and mechanical drive
Pneumatic actuators use compressed air (0.4–0.7MPa) to drive the piston or diaphragm to move, convert the air source pressure into mechanical torque, drive the butterfly plate to complete 0°–90° rotation, and realize rapid opening and closing of the valve or flow regulation; Double-acting actuators control bidirectional action through alternating air intake, and single-acting actuators rely on spring reset, which is suitable for emergency shut-off and other safety demand scenarios.
High response and fast operation
Pneumatic actuators can complete the opening and closing of large-diameter valves (such as DN1000) in ≤3 seconds, meeting the rapid response requirements for fluid control in chemical, energy and other fields.
2. Precise Adjustment and Stability Guarantee
Precise Control of Flow and Position
The positioner receives 4–20mA electrical signals, adjusts the gas source input in real time, and achieves millimeter-level precision adjustment of the butterfly plate opening (such as 30° or 45°), which is suitable for refined processes such as chemical reaction proportioning and food filling;
The positioner can compensate for gas source pressure fluctuations and mechanical friction to ensure long-term stable operation of the valve.
Enhanced Sealing Performance
The actuator thrust acts on the contact surface between the butterfly plate and the valve seat. The hard-sealed butterfly valve can withstand a pressure of ≤10MPa to avoid high-pressure leakage (such as natural gas pipelines);
The dust butterfly valve uses the rapid opening and closing action of the pneumatic actuator, combined with wear-resistant sealing materials (such as tungsten carbide), to reduce sealing failure caused by residual particulate matter.
3. Safety and adaptability extension
Safety interlock and fault protection
When the air is cut off, the single-acting actuator automatically resets to the preset safety state (fully open or fully closed) through the spring to avoid system loss of control (such as emergency response to chemical pipeline leakage);
The explosion-proof actuator adopts a flameproof shell and a spark-free design, which is suitable for flammable and explosive environments (such as oil storage and transportation).
Adaptability to complex environments
The high-temperature resistant actuator supports ≤425℃ working conditions (such as high-temperature steam pipelines for thermal power generation) through metal sealing and heat dissipation structure;
The air filter pressure reducing valve purifies the air source to prevent dust and moisture from corroding the internal components of the cylinder (such as cement plant powder control).
4. System integration and automation support
Industrial automation compatibility
Through the linkage between the solenoid valve and the PLC/DCS system, remote control and programmed operation are realized (such as multi-valve coordination in sewage treatment plants);
The intelligent positioner supports communication protocols such as HART and Profibus, and real-time feedback of valve opening and pressure parameters to the central control system.
Ease of maintenance and expansion
The modular design allows for quick replacement of seals or actuator types (such as double-acting to single-acting);
Compatible with flanges, clamps and other connection methods, suitable for DN50-DN2000 pipeline requirements