The sealing forms of electric actuated wafer butterfly valve include triple eccentric metal seal, concentric soft seal and double eccentric soft seal. It is composed of rotary electric actuator and wafer‑type butterfly valve body. It is suitable for working sites with narrow installation space and short pipeline distance. There are no connecting rods or bolts inside the valve body, which ensures reliable performance and long service life. It can be installed in multiple positions without being affected by medium flow direction. Widely used in ventilation and dust‑laden cold or hot gas pipelines of chemical, building material, power station, glass and other industries for flow regulation or shut‑off of gas media in environmental‑protection projects.

Product Features

1. Novel and reasonable design with unique structure, light weight and fast opening‑closing action.

2. Replaceable sealing components, reliable bidirectional sealing performance achieving zero leakage.

3. Aging‑resistant and corrosion‑resistant sealing material for long service life.

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

5. Integrated seat‑back structure reduces seat deformation.

6. Shaft axial positioning device improves sealing performance and reduces valve torque.

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

Technical Parameters

Electric Actuator Technical Parameters

(1) Function: Intelligent type, regulating type, on‑off type.

(2) Compact size: Only about 35% volume of similar products.

(3) Easy operation: Single‑phase power supply with simple wiring; convex spherical structure for convenient observation; oil‑free and maintenance‑free, waterproof and rust‑proof, supports arbitrary‑angle installation.

(4) Protection: Dual‑limit, overheat protection and overload protection. Full‑stroke time:15s,30s,45s,60s. Manual function available.

(5) Intelligent digital control: Built‑in module receives standard 4‑20mA DC /1‑5VDC signal from computer or industrial instruments to realize intelligent control and precise positioning. 3810 series, NA series electronic rotary actuators, PSQ series or DYR series are optional. For valves ≥DN400, 380VAC electric actuators are generally adopted.

Component Materials

Performance Specification

Installation Notes for Electric Actuated Wafer Butterfly Valve

Electric actuated wafer butterfly valve shall generally not be used at pipeline ends or positions where downstream disassembly is required. When downstream flange is removed, the wafer‑type valve will fall off. A short pipe nipple must be added for disassembly in such cases. Flanged butterfly valves avoid this problem but come with higher cost.

Wafer‑type and flanged butterfly valves share the same function for fluid flow regulation. The difference lies in installation form. Flanged butterfly valves are recommended for high‑pressure conditions and hazardous fluid service.