Pneumatic Carbon Steel WCB Butterfly Valve
Product Overview
The pneumatic carbon steel WCB butterfly valve is an industrial rotary valve constructed of ASTM A216 WCB carbon steel and equipped with a full-stroke pneumatic actuator. It realizes medium shut-off and flow regulation through 0°–90° rotation of the butterfly disc. Featuring compact structure, high strength, excellent temperature and pressure resistance, and strong compatibility with automatic control systems, it is widely used for medium and high-pressure pipeline systems in petrochemical, power, municipal and other industrial fields.
Technical Parameters
Valve Body Material | Carbon Steel WCB (ASTM A216 WCB) |
Nominal Diameter | DN50–DN2000 (2"–80") |
Nominal Pressure | PN1.0, PN1.6, PN2.5, PN4.0, PN6.4MPa; Class150, Class300, Class600 |
Connection Type | Wafer, Flange (GB/ASME/DIN standard), Lug Type |
Sealing Type | Soft seal (EPDM/PTFE, ≤260℃); Hard seal (hardfaced metal seal, ≤425℃) |
Applicable Temperature | WCB soft seal: -20℃~180℃; WCB hard seal: -29℃~425℃ |
Applicable Media | Water, steam, oil products, natural gas, air, weakly corrosive fluids and media with trace particles |
Actuator Type | Pneumatic piston type (double-acting / single-acting spring return) |
Air Supply Pressure | 0.4–0.6MPa |















