Butterfly Valve

We can customize butterfly valves according to your request. Please download and view our butterfly valves catalogue to see if it meets your needs.

What is Butterfly Valves?

A butterfly valve is a type of flow control valve that operates by rotating a circular disc (the "butterfly") 90 degrees via a shaft (valve stem) to open, close, or regulate fluid flow. Named for its disc's resemblance to butterfly wings, the butterfly valve is known for its compact structure, easy operation, and reliable flow control performance. 

How Do Butterfly Valves Work? 

● Fully Open Position (0°):

When the disc of butterfly valve is aligned parallel to the flow direction, the butterfly valve is in a fully open position. 

● Fully Closed Position (90°):

When the disc is rotated 90 degrees to be perpendicular to the flow, it seals tightly against the valve seat or sealing surface. 

● Throttle or Regulating Position (Between 0° and 90°):

By adjusting the rotation angle of the disc between 0° and 90°, the butterfly valve can provide accurate flow regulation. Some cast iron butterfly valves are equipped with actuators and positioners for automated flow control in process industries.

Butterfly Valve Components and Design

Below is a detailed overview of butterfly valve design and its main parts: 

● Butterfly Valve Body: 

Common connection types include: Wafer Type Butterfly Valve, Flanged Type Butterfly Valve, Lug Type Butterfly Valve.

● Butterfly Valve Disc: 

Popular butterfly valve disc materials include: Stainless Steel, Ductile Iron, Nickel Alloy, PTFE-coated surfaces. Material selection depends on the media’s corrosiveness, temperature, and pressure.

● Butterfly Valve Stem / Shaft: 

Available in one-piece or two-piece designs, the stem must be made of high-strength, corrosion-resistant materials for long-term durability, especially in demanding applications.

● Butterfly Valve Seat: 

    Soft Seats (made of rubber, PTFE, etc.) – ideal for low- to medium-pressure systems

    Metal Seats (metal-to-metal contact) – suitable for high-temperature, high-pressure industrial applications

● Butterfly Valve Actuator: 

Actuator types include: Manual Handle, Gearbox (worm gear type), Pneumatic Actuator, Electric Actuator.

● Butterfly Valve Bearings: 

Bearings support the stem and reduce friction during rotation, while packing prevents leakage around the stem area.

These butterfly valve components enhance the operational stability and service life of the valve under continuous operation.

Key Features of Yaxing Butterfly Valves

1️⃣ High-Performance Sealing for Zero Leakage

Leak prevention is critical in industrial piping systems, and our butterfly valves are equipped with advanced sealing technology to achieve zero leakage performance.

2️⃣ Corrosion-Resistant Materials for Long-Term Use

Our high performance butterfly valves are manufactured using high-quality, corrosion-resistant materials, such as ductile iron. This ensures they can withstand harsh industrial environments, including exposure to moisture and extreme temperatures, making them ideal for water treatment plants.

3️⃣ Easy Installation and Maintenance

Designed for user-friendly operation, Yaxing butterfly valves feature a compact and lightweight design, making installation and maintenance simple.

4️⃣ Wide Range of Sizes and Pressure Ratings

We offer high-quality butterfly valves in various sizes and pressure ratings to meet the specific needs of different industries. If your system requires high-pressure handling for water distribution networks, our extensive bufferfly valves types ensures you find the right fit for your project.

For more details on our butterfly valve solutions, or to request a free quote, please contact us!