The wafer butterfly valve consists of rubber sealing butterfly element, carbon steel or stainless steel disc and stem. It is applicable for water supply, drainage and gas pipelines within temperature range of 80～120℃, widely used in food, pharmaceutical, chemical, petroleum, power, textile and paper industries for flow regulation and medium shut-off.

Applicable Media

Wafer butterfly valves are suitable for fresh water, sewage, seawater, air, steam, food, pharmaceutical products, various oils, acids, alkalis and salts.

Sealing Materials for Wafer Butterfly Valve

Technical Parameters

Main Parts & Materials

Temperature Range of Sealing Materials

Types, Applications and Advantages of Wafer Butterfly Valves

Types of Wafer Butterfly Valves

1. Manual Wafer Butterfly Valve

The manual actuator is handwheel or lever. Operators turn the handle to open or close the valve. Compared with automated wafer butterfly valves, manual versions are more cost-effective. They are suitable for locations without power supply or where automation is costly. However, manual operation brings safety risks when handling hazardous fluids prone to leakage. Operators may suffer fatigue if frequent valve operation requires high torque.

2. Electric Wafer Butterfly Valve

Electric wafer butterfly valve is operated by an electric actuator. Manufacturers equip actuators with automatic control systems to manage disc opening and closing. It can be used in all industries, though the valve and maintenance cost are higher than manual types.

3. Pneumatic Wafer Butterfly Valve

Pneumatic wafer butterfly valve is driven by pneumatic actuator. The actuator converts compressed air energy into mechanical force for valve operation. Compressed air enters the actuator chamber to build pressure and drive opening or closing. It is widely adopted in various industrial applications.

Applications of Wafer Butterfly Valves

• Fire protection systems

• Chemical manufacturing

• Municipal wastewater treatment and water purification

• HVAC systems

• Food and beverage processing

• Refineries

• Mining industry

• Pharmaceutical industry

Advantages of Wafer Butterfly Valves

• Available in manual or automated versions

• More economical compared with other butterfly valves

• Quarter-turn operation enables fast opening and closing

• Simple and compact design

• Small dimension and lightweight

• Occupies minimal installation space

• Easy to clean, install and maintain

• Versatile design suitable for multiple industries

• Supports bidirectional or unidirectional fluid flow

• Good resistance to corrosion and abrasion

• Suitable for slurry and sludge service

How to Install Wafer Butterfly Valve

Conventional flanged butterfly valves have flanges on both sides of the valve body. Two pipe flanges are connected to the valve flanges and fastened with bolts. A wafer butterfly valve has no built-in flanges. It is clamped between two pipe flanges and secured by long bolts passing through both pipe flanges. This wafer connection method is widely adopted for standard pipelines.