Butterfly valves come in several distinct designs, each optimized for specific applications and operating conditions. Understanding these types is essential for selecting the right valve for your system. This comprehensive guide covers the main butterfly valve types available in the market today.
The most common type, featuring a disc that rotates around a center axis. The disc contacts a resilient seat (typically EPDM, Buna-N, or Viton) for bubble-tight shut-off. Suitable for general purpose isolation in water, HVAC, and industrial applications. Available in wafer and lug configurations.
Features two offsets: one behind the disc centerline and one from the pipe centerline. This design lifts the disc away from the seat during opening, reducing wear and extending service life. Ideal for higher pressure applications and frequent cycling. Often used in oil and gas, power generation, and chemical processing.
The most advanced butterfly valve design, with three offsets that provide a cam-action motion. The disc rotates completely away from the seat, eliminating friction and wear. Provides zero-leakage metal-to-metal sealing for high-temperature and high-pressure applications. Used in critical services including steam, hydrocarbons, and cryogenic applications.
Features a PTFE (Teflon) lining that protects the valve body from corrosive media. The lining covers all wetted surfaces, making these valves ideal for chemical processing, pharmaceutical, and acid handling applications. Available in wafer and lug configurations with various liner materials.
Also known as a U-section butterfly valve, featuring a disc with a U-shaped profile for improved flow characteristics. These valves offer reduced pressure drop and smoother flow compared to standard designs. Ideal for sanitary applications, food processing, and pharmaceutical manufacturing.
Features grooved ends compatible with mechanical coupling systems (Victaulic-style). These valves offer quick installation without flange bolting, making them popular in fire protection systems and HVAC mechanical rooms. Available with visual position indicators for quick status verification.
| Application | Recommended Type |
|---|---|
| Water & Wastewater | Concentric / Resilient Seated |
| Fire Protection | Grooved End (with indicator) |
| Chemical Processing | PTFE Lined |
| High Temperature | Triple Offset |
| Food & Beverage | U-Type (Sanitary) |
| Oil & Gas | Double Offset / High Performance |
| HVAC | Concentric Wafer |
Laux Valve manufactures a wide range of butterfly valve types to meet diverse industry requirements. Contact our team for assistance in selecting the right valve design for your specific application.
