Pneumatic Actuated Butterfly Valve Manufacturer & Supplier in India
Speciality Valve is a Pneumatic Actuated Butterfly Valve Manufacturer and Supplier in India, delivering durable and automation-ready valves designed for reliable flow control in critical industries. Our valves are engineered to API and ISO standards, ensuring long service life and dependable performance.
Function & Working
Pneumatic actuated butterfly valves use compressed air to rotate the disc within the pipeline, providing quick isolation or regulation of flow. The actuator can be configured as double-acting (air to open and close) or spring-return (fail-safe position). With solenoid valves, positioners, and limit switches, they integrate seamlessly into automated control systems.
Types of Pneumatic Actuated Butterfly Valves
Wafer Type
Lug Type
Concentric (Resilient-Seated)
Double-Eccentric (High-Performance)
Triple-Eccentric (Metal-Seated)
Types of Pneumatic Actuators
Rack and Pinion
Scotch Yoke
Diaphragm
Piston / Cylinder
Rotary Vane
Twin Piston
Helical Spline / Helical Rotary
Advantages
Quick quarter-turn actuation for isolation and throttling
Compact, lightweight, and cost-effective design
Wide seat options (EPDM, NBR, PTFE, Viton) for different media
Fail-safe spring-return options for critical safety applications
Compatible with solenoid valves, positioners, and limit switch boxes
ISO 5211 and NAMUR compliant for standardized mounting
Materials of Construction
| Component | Material Options |
|---|---|
| Body | Cast Iron, Ductile Iron (GGG40), WCB Carbon Steel, Stainless Steel (SS304, SS316/316L, SS904L), Duplex, Super Duplex, Aluminum Bronze |
| Disc | Stainless Steel (SS304, SS316/316L, SS904L), Duplex, Super Duplex, Aluminum Bronze, Monel, Hastelloy |
| Seat / Liner | EPDM, NBR, PTFE, RPTFE, Viton, Neoprene, Silicone |
| Shaft / Stem | Stainless Steel (SS410, SS304, SS316, Duplex, Super Duplex) |
| Seals | Nitrile, Viton, PTFE reinforced |
| Actuator Housing | Hard-Anodized Aluminum Alloy, Epoxy-Coated Ductile Iron, Stainless Steel |
Technical Specifications
Valve Sizes: DN50 – DN2000 (2″ – 80″)
Pressure Ratings: PN10 – PN25 / ASME Class 150
End Connections: Wafer, Lug, Flanged (RF/RTJ)
Actuation Options: Double-Acting Pneumatic, Spring-Return Pneumatic
Accessories: Solenoid Valves, Positioners, Limit Switch Boxes, Air Filter Regulators
Standards: API 609, ASME B16.34, ISO 5211, PED 2014/68/EU
Testing: Hydrostatic and seat leakage testing per API 598 / ISO 5208
Industries Served
Oil & Gas and Petrochemicals
Power Generation
Marine & Offshore
HVAC & Water Distribution
Chemical & Fertilizer Plants
Pulp & Paper Mills
Food & Beverage Industries
Wastewater & Desalination Plants
