U Type Butterfly Valve

U Style Flanged Butterfly Valves

The U-type butterfly valve with flange connection adopts a centerline structure. It features a compact design, small size, light weight, and consists of only a few components, making it easy to install and maintain. The valve can be opened or closed quickly by rotating 90°, providing simple and efficient operation along with excellent flow control performance.

The disc of the butterfly valve is installed in the diameter direction of the pipeline and rotates within the cylindrical passage of the valve body. The rotation angle ranges from 0° to 90°, with the valve fully open at 90°. This structural advantage makes U-type butterfly valves particularly suitable for large-diameter valve designs.

Material and Structural Features

Typically made of ductile iron (DI), the valve offers excellent mechanical strength and corrosion resistance. The centerline structure design minimizes resistance during fluid flow. When fully opened, the only obstruction is the thickness of the disc, resulting in a minimal pressure drop and superior flow regulation characteristics.

Sealing Options

The U-type butterfly valve is available with two main types of sealing:

• Elastic Seal: The sealing ring can be embedded in the valve body or attached to the edge of the disc. It is ideal for low- to medium-temperature conditions and provides reliable sealing.

• Metal Seal: More suitable for high-temperature applications, with longer service life, although achieving a perfect seal can be more challenging.

Selecting the correct valve size and type is essential for effective flow control.

Application Fields

U-type flange butterfly valves are widely used in general industries such as petroleum, natural gas, chemical processing, and water treatment, as well as in cooling water systems of thermal power plants. Their excellent pressure resistance, corrosion resistance, and quick operation make them highly suitable for various industrial applications.

Installation Types

The commonly used installation methods include:

• Wafer Type Butterfly Valve: Installed between two pipe flanges using double-head bolts.

• Flanged Type Butterfly Valve: Comes with flanges on the valve body, which are bolted directly to the pipeline flanges for a secure installation.

U Type Butterfly Valve Material