Flanged Butterfly Valve

Classification of Flange Butterfly Valves

Yaxing high-quality flange butterfly valves are widely used in various industrial pipeline systems and come in multiple types depending on sealing structure, actuator method, and valve design. 

1. By Sealing Type:

    ● Soft-seated flange butterfly valve: Ideal for low to medium pressure applications; provides excellent sealing with materials like EPDM or PTFE.

    ● Metal-seated flange butterfly valve: Designed for high-temperature and high-pressure environments; suitable for harsh industrial conditions.

2. By Actuation Method:

    ● Manual flange butterfly valve (lever or gear operated): Simple and cost-effective for low-frequency operations.

    ● Electric flange butterfly valve: Equipped with electric actuators for automated flow control.

    ● Pneumatic flange butterfly valve: Uses air pressure to open/close quickly, ideal for process automation.

    ● Hydraulic flange butterfly valve: Suitable for high-force environments where fluid actuation is preferred.

3. By Structural Design:

    ● Centerline (wafer-type) flange butterfly valve: Compact and commonly used in general pipelines.

    ● Double offset flange butterfly valve: Reduces wear on sealing surfaces, enhances lifespan.

    ● Triple offset flange butterfly valve: Offers metal-to-metal sealing, perfect for extreme pressure and temperature conditions.

Main Technical Specifications of Yaxing Flange Butterfly Valve

Key Features of Flanged Butterfly Valves

  ● Flanged butterfly valves with strong flange connection ensure excellent sealing performance and full compatibility with international pipeline standards (ANSI, DIN, JIS, etc.), making installation quick and easy for water, gas, and industrial fluid systems.

  ● Low fluid resistance design in flanged butterfly valves helps reduce energy consumption and maintain stable system pressure, especially in HVAC, water treatment, and chemical pipelines.

  ● Compact flanged butterfly valve structure with a small footprint makes it ideal for installations with limited space, such as marine piping systems and modular plants.

  ● Low operating torque flanged butterfly valves allow for smooth manual or automated operation, making them perfect for use in intelligent flow control systems.

  ● Industrial-grade flanged butterfly valves offer a wide range of sealing materials (EPDM, PTFE, metal seal) suitable for high-temperature, corrosive, or sanitary media environments.

  ● Large-diameter flanged butterfly valves are especially suitable for long-distance transmission pipelines, municipal water supply, and wastewater treatment applications where pressure loss and reliability are critical.

Advantages and Disadvantage of Flanged Butterfly Valves

Advantages: 

    ● Compared to gate valves or globe valves, flanged butterfly valves are more affordable, making them an economical solution for large-scale pipeline projects. 

    ● Their small installation footprint makes them ideal for confined spaces, such as ships, modular plants, or HVAC systems. 

    ● Additionally, they allow for easy maintenance — components can be replaced or repaired without removing the valve from the pipeline.

Disadvantages:

    ● One key drawback of flanged butterfly valve is that their sealing performance is generally lower than gate valves or ball valves, especially under high-pressure, high-temperature, or vacuum conditions, where the risk of leakage increases. 

    ● The service life of a flanged butterfly valve may also be affected by the abrasive or corrosive nature of the medium, especially in chemical or slurry applications.

When choosing the right valve, it’s important to consider both the advantages and disadvantages of flanged butterfly valves in relation to your specific system requirements, fluid characteristics, and operating conditions.

FAQ about Yaxing Flanged Butterfly Valve

1. What kind of materials do you mainly make Flanged Butterfly Valves?

At Yaxing Valve, we primarily manufacture flanged butterfly valves using high-quality cast iron. Cast iron is widely recognized for its excellent durability, cost-effectiveness, and resistance to wear and corrosion, making it an ideal material for general industrial applications.

2. What are the main application areas of your Flanged Butterfly Valves?

Our flanged butterfly valves are primarily used in the water treatment industry, including municipal water supply, wastewater treatment plants, sewage systems, and industrial water processing. These valves are engineered to handle low to medium pressure conditions, with corrosion-resistant materials and customizable sealing options to ensure long service life in harsh environments. Whether for clean water distribution or chemical-laden wastewater handling, our cast iron flanged butterfly valves deliver reliable performance with minimal maintenance.

3. What sizes of Flanged Butterfly Valve do you mainly produce?

We mainly produce large-size flanged butterfly valves, ranging from DN50 to DN1200, specifically designed for industrial applications. We provide customizable valve solutions to meet your specific flow, pressure, and sealing requirements.