Introduction to Butterfly Valves

Butterfly valves are widely used in industrial piping systems for controlling fluid flow. Thanks to their simple construction, rapid operation, and cost-effectiveness, they have become a popular choice in a variety of applications. This article provides an overview of butterfly valves, explaining their basic principles, different types, key advantages, and common applications, while also highlighting our role as a dedicated butterfly valve manufacturer.

Basic Principle of Butterfly Valves

A butterfly valve consists of a circular disc, a shaft, and a valve body. When the valve is closed, the disc blocks the flow passage completely, effectively stopping the fluid. When opened, the disc rotates—usually by a quarter turn (90 degrees)—allowing the fluid to pass through the valve. This quick action makes butterfly valves ideal for applications where fast response and frequent operation are required.

Types of Butterfly Valves

Butterfly valves come in several configurations, each suited to specific installation and operational needs:

• Wafer-Type Butterfly Valves:
  These valves are designed to fit between two flanges in a pipeline. They are lightweight and cost-effective, making them suitable for applications where dead-end service is not required.

• Lug-Type Butterfly Valves:
  Featuring threaded lugs on the valve body, lug-type valves can be mounted on either one or both sides of a flange. This design offers the advantage of easy installation and removal, making them ideal for systems that require regular maintenance or isolation.

• Flanged Butterfly Valves:
  With flanges on both ends, these valves provide a secure connection to the piping system, ensuring high performance in high-pressure or high-temperature environments.

• Specialized Material Valves:
  Butterfly valves are available in a range of materials—including stainless steel, ductile iron, plastic, and PTFE-lined options—to handle corrosive, abrasive, or high-temperature fluids.