Pneumatic control ball valves utilize intelligent control and positioning, paired with an electric valve positioner. They operate by receiving a 4–20mADC signal and a 0.4–0.7MPa air supply, enabling regulation of parameters such as pressure, flow rate, temperature, and liquid level. Pneumatic control valves use compressed air as their power source, with the valve stem driving the plug to rotate 90° within the valve body, achieving a fully open-to-fully closed action. Pneumatic control ball valves are categorized by sealing type into metal-seal and soft-seal variants. They offer advantages including compact structure, small size, reliable operation, excellent sealing, easy maintenance, convenient installation, and strong adaptability. Pneumatic O-type control valves are particularly suitable for media with viscous, particulate, or fibrous properties. Pneumatic control ball valves are widely used in industrial automation systems across petroleum, chemical, educational equipment, light industry, high-pressure equipment, pharmaceutical, and papermaking sectors for remote centralized control or local operation.
Parameters and Performance
| Nominal Diameter DN(mm) | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 |
|---|
| Rated Flow Coefficient KV | 21 | 38 | 72 | 112 | 170 | 273 | 384 | 512 | 940 | 1452 | 2222 | 3589 |
| Nominal Pressure(MPa) | PN 1.6, 2.5, 4.0, 6.4 MPa; ANSI 150, 300 LB |
| Valve Body Type | Two-piece Cast Ball Valve |
| Connection Type | Flange-mounted, Welded, Wafer-type, Threaded |
| Valve Core Type | O-ring ball valve core |
| Sealing Packing | V-shaped PTFE packing, flexible graphite packing, etc. |
| Flow Characteristics | Approximate Quick-Open Type |
| Range of motion | 0～90° |
| Leakage rate Q | According to GB/T 4213-92, less than 0.01% of rated voltage |
| Basic error | With positioner: Less than ±2% of full scale |
| Hysteresis | With positioner: Less than 2% of full stroke |
Tianjin Yibiao Valves Main Products:
