1. Core functions and effects
Quickly cut off the fluid
The pneumatic actuator drives the ball to rotate 90° to achieve the second-level opening and closing of the pipeline medium (response time 0.5~2 seconds), which is suitable for emergency shut-off scenarios (such as pipeline leakage, system overpressure).
Precise flow/pressure regulation
The V-type ball valve can accurately control the medium flow (such as adjusting the feed of chemical reactors) through the special cut-out ball core design;
With the intelligent positioner (supporting PID algorithm), closed-loop control of pressure and temperature can be achieved.
Automated process control
Linked with the PLC/DCS system, the valve opening and closing status can be remotely controlled to reduce manual intervention (such as long-distance oil pipelines and centralized control of chemical plants).
Safety guarantee
Emergency shut-off (ESD function): Automatically shut down when the system fails to prevent the accident from expanding;
Corrosion-resistant seal: Stainless steel/PVDF valve body + hard seal structure, resistant to corrosive media such as acids and alkalis.
2. Typical application scenarios and functions
| Industry | Applications | Function |
|---|---|---|
| Petrochemical | Crude oil transportation, reactor control | Emergency cut off of high-risk media to prevent leakage and explosion |
| Electricity/Energy | Boiler steam regulation, natural gas pipeline | Accurately control flow pressure to ensure system stability |
| Environmentally friendly water treatment | Sewage/pharmaceutical dosing system | Remotely start and stop corrosive fluids to improve operational safety |
| Food and Pharmaceuticals | Aseptic fluid filling line | Sanitary materials (such as 316L stainless steel) ensure no pollution |
3. Comparison of the core advantages of manual ball valves
| Feature | Pneumatic ball valve | Manual ball valve |
|---|---|---|
| Operational Efficiency | Second-level response, support high-frequency operation | Relying on manual labor, slow speed |
| Control Precision | PID flow regulation (error ≤ 1%) | Only switch function, no fine adjustment |
| Applicable scenarios | High-risk/high altitude/remote pipelines | Simple low risk pipeline |
4. Special types of extended applications
Pneumatic regulating ball valve: V-shaped ball core + positioner, accurately control the flow of slurry and fiber media;
Two-stage pneumatic ball valve: open and close in stages to prevent water hammer impact (such as liquid filling system);
Manual function type: manual emergency operation in case of pneumatic failure.
Selection suggestions: Stainless steel hard seal or PVDF valve body is preferred in highly corrosive environments; high-pressure working conditions (PN100 and above) require enhanced sealing structure design.
