Pneumatic diaphragm straight-through single-seat regulating valve has the advantages of simple structure, reliable operation, small leakage and no fire and explosion, so it is widely used in the automatic control system of industrial departments such as petrochemical, metallurgy, power station, etc. Because the unbalanced force on its valve core is large, especially when the diameter is large, the unbalanced force increases, so it is suitable for occasions with small pressure difference and small leakage.

Pneumatic diaphragm straight-through single-seat regulating valve

- Nominal diameter DN (mm): 20-200mm
- Valve seat diameter DN (mm): 10-200mm
- Rated flow coefficient Kv: 1.2-450
- Action mode: air-to-close; air-to-open
- Spring pressure range (KPa): standard 20~100, optional 40~200, 20~60, 60-100
- Air supply pressure (MPa): standard 0.14; optional 0.24