Pneumatic Actuated Spherical Disc Butterfly Valve

Technical Specifications

• 1. Valve Construction

• Type: Spherical Disc, Wafer / Lug / Flanged End Type

• Body Material: CI / DI / WCB / CF8 (SS304) / CF8M (SS316) / PP / PVDF

• Disc Material: SS304 / SS316 / DI with Nylon 11 / EP Coating / PFA / PVDF / Aluminum Bronze

• Shaft Material: SS304 / SS316

• Seat Material: PTFE / RPTFE / EPDM / Viton (depending on media)

• Size Range: 40mm (1½”) to 600mm (24”)

• Design Standard: API 609 / ISO 5752

• Pressure Rating: PN10 / PN16 / Class 150

• Temperature Range: -20°C to +200°C (depends on seat material)

• End Connection: Wafer / Lug / Flanged (ANSI B16.5 / DIN)

• Leakage Class: Class VI (Bubble Tight Shutoff)

• 2. Pneumatic Actuator

• Type: Double Acting / Single Acting (Spring Return)

• Body Material: Hard Anodized Aluminium Alloy

• Air Supply Pressure: 5–7 bar

• Working Medium: Clean, dry, lubricated air

• Rotation: 90° ± 5°

• Mounting Standard: ISO 5211 / NAMUR Interface

• Operating Temperature: -20°C to +80°C

• Accessories (Optional):

• Solenoid Valve (24VDC / 230VAC)

• Limit Switch Box (Mechanical / Proximity type)

• Air Filter Regulator with Lubricator (FRL Unit)

• Electro-Pneumatic Positioner (for Modulating Control)

• Manual Override

• 3. Features & Performance

• Spherical Disc Design: Ensures low torque operation and tight sealing with minimal wear.

• Operation: On/Off or Modulating service.

• Tight Shutoff: Bubble-tight sealing with minimal leakage.

• Corrosion Resistance: Suitable for aggressive and corrosive media.

• Cycle Life: Exceeds 1 million operations under standard conditions.

• Compact Design: Lightweight and easy to install with pneumatic automation systems.

• Applications

• Chemical & Process Industries

• Water Treatment & Distribution

• HVAC Systems

• Power Generation

• Pharmaceutical & Food Industries

• Acid, Alkali & Corrosive Media Handling

A high-performance butterfly valve featuring a spherical (contoured) disc for improved sealing efficiency, reduced torque, and longer service life. Operated by a pneumatic actuator, it provides precise and reliable control for on/off or modulating applications in industrial fluid systems.