Center Line Butterfly Valves: A Comprehensive Guide to Design, Types, and Applications

Jan 29, 2024 | News

In the realm of industrial flow control, center line butterfly valves play a crucial role in regulating the flow of liquids and gases. Their unique design and versatility make them suitable for a wide range of applications across various industries. In this comprehensive guide, we will delve into the intricacies of center line butterfly valves, exploring their design features, different types, and the diverse applications where they excel.

Understanding Center Line Butterfly Valves


Center line butterfly valves, also known as resilient seated butterfly valves, are quarter-turn valves that utilize a circular disc (butterfly) to control the flow of media. The disc is positioned in the center of the valve body, and its rotation around a central axis allows for quick and efficient flow regulation.

Design Features of Center Line Butterfly Valves

  1. Body: The China valve body is typically made of cast iron, stainless steel, or other corrosion-resistant materials, ensuring durability and longevity.
  2. Disc: The disc is the primary flow control component and is usually made of a resilient material such as rubber or PTFE. This material provides a tight seal against the valve seat, preventing leakage.
  3. Stem: The stem connects the disc to the actuator and is responsible for rotating the disc to open or close the valve.
  4. Seat: The valve seat is the surface against which the disc seals to prevent leakage. It is typically made of a resilient material that can withstand repeated opening and closing cycles.

Types of Center Line Butterfly Valves

  1. Lug Style: Lug style butterfly valves have lugs on the body for easy installation between pipe flanges.
  2. Wafer Style: Wafer style butterfly valves do not have lugs and are sandwiched between two pipe flanges, making them compact and suitable for space-constrained applications.
  3. Double Flange Style: Double flange style butterfly valves have flanges on both sides of the valve body, providing a secure connection to the piping system.
  4. Triple Offset Style: Triple offset style butterfly valves feature a unique disc and seat design that minimizes wear and tear, making them ideal for high-pressure and high-temperature applications.

Applications of Center Line Butterfly Valves

  1. HVAC Systems: Center line butterfly valves are widely used in heating, ventilation, and air conditioning (HVAC) systems to regulate the flow of hot or cold air.
  2. Water Treatment Plants: These valves are employed in water treatment plants to control the flow of water and chemicals.
  3. Chemical Processing: Center line butterfly valves are suitable for various chemical processing applications, including corrosive and abrasive media.
  4. Oil and Gas Industry: They are extensively used in the oil and gas industry for flow control in pipelines and processing facilities.
  5. Power Generation: Center line butterfly valves play a vital role in regulating the flow of fluids in power generation plants.

Advantages of Center Line Butterfly Valves

  1. Compact Design: Their compact size and lightweight construction make them easy to install and maintain.
  2. Quick Operation: Quarter-turn operation allows for rapid flow regulation.
  3. Low Maintenance: Center line butterfly valves require minimal maintenance, reducing operational costs.
  4. Cost-Effective: They offer a cost-effective solution for flow control compared to other types of valves.
  5. Versatile Applications: Their versatility makes them suitable for a wide range of industries and applications.

Center line butterfly valves are versatile and efficient flow control devices that find applications in various industries. Their simple design, compact size, and cost-effectiveness make them a popular choice for regulating the flow of liquids and gases. By understanding the design features, different types, and applications of center line butterfly valves from China butterfly valve manufacturer, engineers and professionals can select the most appropriate valve for their specific needs, ensuring optimal flow control and system performance.