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Butterfly Valve

Fabricated

Fabricated butterfly valves are constructed from welded components, offering robust performance and durability in industrial applications. They feature a wide range of materials and configurations, providing versatility for various fluid control needs.
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Fabricated butterfly

Specifications

Butterfly Valve - Fabricated
Size Range

Typically from 2 inches to 48 inches (DN 50 to DN 1200)

Body Materials

Carbon Steel, Stainless Steel (304, 316, 316L), Alloy Steel

Temperature Range

From -20°C to 200°C (-4°F to 392°F), depending on materials and configuration

Pressure Rating

ANSI Class 150, 300, 600 PN 10, PN 16, PN 25, PN 40

Connection Types

Wafer, Lug, Flanged

Actuation Options

Manual (lever or gear), Electric actuator, Pneumatic actuator, Hydraulic actuator

Seat Materials

EPDM, NBR (Nitrile Butadiene Rubber), Viton, PTFE

End Connections

ANSI B16.5 Flanged, EN 1092-1 Flanged, ASME B16.25 Butt Weld

Disc Materials

Stainless Steel, Carbon Steel, Alloy Steel

Design Standard

API 609, ASME B16.34, EN 593

Applications

Chemical processing, Petrochemical industry, Power generation, Water treatment, HVAC systems

Features:

  1. Robust Construction: Fabricated from welded components, ensuring strength and durability for rigorous industrial applications.

  2. Versatile Materials: Available in carbon steel, stainless steel (304, 316, 316L), and alloy steel options to suit diverse operational requirements.

  3. Multiple Disc and Seat Options: Discs and seats can be made from stainless steel, carbon steel, or lined with materials like EPDM, NBR, Viton, or PTFE for enhanced performance.

  4. Wide Size Range: Typically ranging from 2 inches to 48 inches (DN 50 to DN 1200), accommodating various piping system sizes.

  5. High Pressure and Temperature Capability: Designed to handle pressures up to ANSI Class 600 and temperatures from -20°C to 200°C (-4°F to 392°F), depending on configuration.

  6. Various Connection Types: Offered in wafer, lug, and flanged connections, facilitating easy installation and integration into piping systems.

  7. Actuation Flexibility: Compatible with manual (lever or gear), electric, pneumatic, or hydraulic actuators for remote operation and automation.

  8. Customization Options: Can be customized for specific applications, including special coatings, materials, and configurations as per customer requirements.

Benefits:

  1. Reliability and Durability: Fabricated butterfly valves offer robust performance and long service life in demanding industrial environments.

  2. Versatility: Suitable for a wide range of industries, including chemical processing, petrochemicals, power generation, water treatment, and HVAC systems.

  3. Cost-Effectiveness: Lower lifecycle costs due to minimal maintenance requirements and extended service intervals.

  4. Efficient Fluid Control: Provide excellent flow control with low pressure drop and reliable sealing capabilities.

  5. Safety and Compliance: Designed and manufactured according to international standards such as API 609, ASME B16.34, and EN 593, ensuring safety and reliability.

  6. Adaptability to Harsh Conditions: Capable of withstanding corrosive fluids, high pressures, and extreme temperatures, maintaining operational integrity.

  7. Ease of Installation and Maintenance: Easy to install and maintain, reducing downtime and operational disruptions.

Fabricated butterfly valves combine robust construction with versatility and reliability, making them a preferred choice for critical fluid control applications in diverse industrial settings.

FAQs:

Fabricated butterfly valves are a type of butterfly valve constructed by welding together separate pieces of metal, typically steel plates. This differs from cast iron butterfly valves, which are formed by pouring molten metal into a mold.

  • Lighter and stronger construction: Fabrication allows for lighter weight designs compared to cast iron valves, while still maintaining high pressure ratings.
  • Lower torque: The lighter weight translates to lower torque required for operation, making them easier to automate.
  • Assured sealing to atmosphere: Fabricated valves can provide a more reliable seal against leaks to the surrounding environment.
  • Wider pressure and temperature range: Fabrication allows for the use of different materials for the body and disc, enabling them to handle a broader range of pressures and temperatures.
  • Generally higher cost: Fabrication is a more complex process compared to casting, which can make them more expensive.
  • Longer lead times: Custom designs or valves for high-pressure applications may require longer lead times for fabrication.

Fabricated butterfly valves are suitable for various industrial applications due to their high strength and ability to handle a wide range of pressures and temperatures. Here are some common uses:

  • Oil and gas pipelines
  • Power plants
  • Chemical processing plants
  • Water and wastewater treatment plants
  • Marine applications
  • Pressure and temperature rating: Choose a valve with a rating exceeding your application’s requirements.
  • Pipe size and flange type: Ensure compatibility with your existing piping system.
  • Material selection: Select appropriate materials for the body, disc, and seat based on the fluid being handled.
  • Actuation type: Decide between manual, pneumatic, or electric actuation depending on your automation needs.

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