A pneumatic ball valve is a ball valve equipped with a pneumatic actuator. Pneumatic actuators have a relatively fast operating speed, with the fastest switching speed being 0.05 seconds per cycle, hence they are often called pneumatic quick-shutdown ball valves.
Pneumatic ball valves are typically equipped with various accessories, such as solenoid valves, air supply treatment units, limit switches, positioners, and control boxes, to achieve local and remote centralized control. The valve can be controlled from the control room, eliminating the need for manual control on-site or at heights or in dangerous locations, significantly saving manpower, time, and ensuring safety.
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Pneumatic actuated ball valve Technical Parameters
Gas Tightness Test: 0.5～0.7
Operating Temperature: PTFE≤150℃, PPL≤300℃, Carbon Fiber≤350℃
Applicable Media: Water, Oil, Steam
P: Nitric Acid (Temperature ≤200℃)
R: Acetic Acid (Temperature ≤200℃)
Design & Manufacturing: GB/T12237-89
Flange Connection: JB/T79-94, GB9113-2000
Structural Length: GB12221-89
Nominal Diameter: DN15~DN150mm
Nominal Pressure: PN1.6, 2.5, 4.0MPa
Pneumatic actuated ball valve Features
- Low Fluid Resistance: Pneumatic ball valves have the lowest fluid resistance of all valve types. Even when fully open or fully closed, the sealing surface is isolated from the medium, making it less susceptible to erosion.
- Excellent Sealing Performance: Sealing rings made of elastic materials such as PTFE ensure excellent sealing performance in both high and low pressure environments.
- Easy Operation: Operated solely by a pneumatic actuator, opening and closing are rapid, requiring only a 90-degree rotation from fully open to fully closed.
- Simple Structure and Easy Maintenance: The compact structure of pneumatic ball valves makes disassembly and replacement of vulnerable parts such as sealing rings very convenient.
- Wide Application Range: Capacities range from a few millimeters to several meters, suitable for applications in high vacuum to high pressure environments.
- High Safety: Powered by gas (typically 0.2-0.8 MPa pressure), even in the event of leakage, it does not cause environmental pollution like hydraulic or electric valves.
advantages of Pneumatic actuated ball valve
Pneumatic ball valves are mainly used in pipelines for rapid shut-off, distribution, and changing the flow direction of media. As a new type of valve, the pneumatic ball valve has the following advantages:
1. Low fluid resistance; its resistance coefficient is equal to that of a pipe section of the same length.
2. Simple structure, small size, and light weight.
3. Tight and reliable; the sealing surface material of the ball valve widely uses plastics, providing excellent sealing performance, and it is also widely used in vacuum systems.
4. Convenient operation; rapid opening and closing; only a 90° rotation is needed to go from fully open to fully closed, facilitating remote control.
5. Easy maintenance; the pneumatic ball valve has a simple structure, and the sealing rings are generally movable, making disassembly and replacement convenient.
6. When fully open or fully closed, the sealing surfaces of the ball and seat are isolated from the media, preventing erosion of the valve sealing surfaces during media flow.
7. Wide range of applications; applicable to pipe diameters from a few millimeters to several meters, and from high vacuum to high pressure.
8. Because pneumatic ball valves use gas as their power source, typically at a pressure of 0.2-0.8 MPa, they are relatively safe. If a pneumatic ball valve leaks, the gas can be directly discharged, unlike hydraulic or electric valves, causing no environmental pollution and offering higher safety.
9. Compared to manual and turbine ball valves, pneumatic ball valves can be configured with larger diameters (manual and turbine ball valves are generally below DN300, while pneumatic ball valves can reach DN1200).
Pneumatic actuated ball valve Applications
- Petroleum/Chemical: Transporting corrosive media such as crude oil and chemicals.
- Power/Pharmaceutical: Controlling steam, cooling water, or sterile fluids.
- Food Processing: Suitable for fluid transport with high hygiene requirements.
- Environmental Engineering: Treating wastewater containing particles or fibers, etc.
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