1. Size Range:

Typical Sizes: Ranges from 2" (50 mm) to 24" (600 mm), with smaller and larger sizes available based on manufacturer specifications.

2. Body Material:

• Cast Iron: Common for general applications due to cost-effectiveness and good strength.

• Ductile Iron: Enhanced toughness and strength compared to cast iron; often used in water and wastewater applications.

• Carbon Steel: Suitable for high-temperature and pressure applications.

• Stainless Steel (304/316): Excellent corrosion resistance; ideal for food and chemical processing.

• PVC/CPVC: Used for corrosive chemical applications; lightweight and easy to install.

3. Disc Material:

• Ductile Iron: Often coated with an epoxy or nickel finish for enhanced corrosion resistance.

• Stainless Steel (304 or 316): Durable and resistant to corrosion; suitable for harsh environments.

• Aluminum Bronze: High resistance to corrosion, especially in marine applications.

4. Seat/Liner Material:

• EPDM: Good for water, steam, and some chemicals; resistant to ozone and UV radiation.

• NBR (Buna-N): Suitable for oil, gas, and other hydrocarbons.

• PTFE (Teflon): Exceptional chemical resistance; used for aggressive chemicals.

• Viton: Excellent for high-temperature and aggressive chemical applications.

5. Pressure Rating:

• PN10/PN16 (150 psi to 250 psi): Standard pressure ratings for most applications.

• Higher ratings (e.g., PN25, PN40) available for specific requirements.

6. Temperature Range:

Typically from -30°C to 150°C, depending on the materials used. Some materials can handle temperatures up to 200°C or more.

7. Operation Type:

• Manual: Lever or gear-operated for direct control.

• Automated: Options for pneumatic or electric actuators for remote control and automation.

8. Connection Types:

• Wafer Type: Installed between flanges; lightweight and easy to install.

• Lug Type: Allows for isolation of the valve and easy removal without disrupting the pipeline.

• Flanged Type: Provides robust connections for high-pressure applications.

9. Design Standards:

• API 609: Standard for butterfly valves in industrial applications.

• AWWA C504: American Water Works Association standard for butterfly valves.

• ISO 5752: International standard for valve face-to-face dimensions.

• EN 593: European standard for butterfly valves.

10. Applications:

• Water Treatment: Used in distribution systems and treatment plants.

• HVAC Systems: For flow control in heating and cooling systems.

• Chemical Processing: Used to handle corrosive chemicals and fluids.

• Food and Beverage: Suitable for hygienic applications and food processing.

• Oil and Gas: Commonly used for flow control in pipelines.

11. Additional Features:

• Fire-safe Design: Optional fire-safe designs available for applications in the oil and gas industry.

• Bushing Options: Different bushings can be used to enhance performance and reduce friction.

• End-of-Line Serviceability: Some designs allow for end-of-line serviceability without removing the valve from the pipeline.