The actuator of pneumatic actuated wafer butterfly valve adopts piston‑type structure, featuring increased torque, flexible rotation, simple structure, small size and light weight. The valve body of pneumatic actuated wafer butterfly valve is available in centerline, triple‑eccentric metal‑sealed, PTFE‑sealed and double‑eccentric soft‑sealed types. It is suitable for sites with limited installation space and short pipeline distance. Without connecting rods or bolts inside valve body, it delivers reliable operation and long service life. It can be installed in multiple positions without being affected by medium flow direction. Widely used in dust‑laden cold or hot gas pipelines for ventilation and environmental‑protection projects in chemical, building material, power station, glass and other industries, serving as flow regulating or shut‑off device for gas media.

Main Features

1. Reasonable design, unique structure, light weight and fast opening‑closing action.

2. Replaceable sealing components, reliable bi‑directional sealing with zero‑leakage performance.

3. Aging‑resistant and corrosion‑resistant sealing materials for extended service life.

4. Two‑piece pinless shaft connection, simple and compact structure for easy maintenance.

5. Integrated seat seal and back‑rest structure reduces seat deformation.

6. Axial shaft positioning device improves sealing performance and lowers valve torque.

7. Can be mounted at any position with convenient maintenance.

Main Technical Parameters

Parts Material

Performance Specification

Applicable Medium: Air, water, sewage, steam, coal gas, oil products, etc.

Drive Type: Pneumatic actuation

Sealing Material & Operating Temperature

Pneumatic Actuator Technical Parameters

Adopt new‑type GTD series or ATD series actuators, including double‑acting and spring‑return single‑acting types with gear transmission for safe and reliable operation.

1. Gear‑type double‑piston design, large output torque with compact dimension.

2. Aluminum alloy cylinder for light weight and nice appearance.

3. Manual override can be installed on top or bottom.

4. Rack‑and‑pinion connection allows adjustable opening angle and rated flow.

5. Optional electric signal feedback indicator and various accessories for automatic operation.

6. ISO5211 standard connection facilitates installation and replacement.

7. Both‑end adjusting screws provide ±4° adjustable range at 0° and 90° to guarantee synchronous precision with valve.

Technical Data & Performance

Accessory Options

Select accessories according to different control requirements:

Limit Switch: Remote feedback of on‑off signal (explosion‑proof optional).

Solenoid Valve: 5/2‑way for double‑acting actuator; 3/2‑way for single‑acting actuator (explosion‑proof optional).

Air Service Unit: Air pressure stabilization, filtration and cylinder lubrication.

Handwheel Override: Realize manual opening and closing by rotating handwheel.

Electro‑pneumatic Positioner: Receive 4～20mA input signal to realize valve modulating function.

Ordering Instructions

1. Actuator type: Double‑acting or Single‑acting.

2. Medium type, operating temperature and working pressure.

3. Required accessories: Solenoid valve, positioner, signal feedback, air service unit, manual override.