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S U D E

Triple Eccentric Butterfly Valve

Triple Eccentric Butterfly Valve – Series 1921

High-Performance Valve for Extreme Industrial Conditions

The Triple Eccentric Butterfly Valve – Series 1921 from SUDE Engineering Private Limited is a precision-engineered industrial valve designed to provide reliable shut-off and flow control in high-temperature, high-pressure, and corrosive environments. Its unique triple-offset geometry ensures that the valve disc moves without friction against the seat, eliminating seat wear and enabling bubble-tight sealing over extended service life.

This advanced design is particularly suited for demanding applications in power plants, refineries, steel manufacturing, and process industries, where consistent performance, durability, and leak-free operation are critical. The triple-offset configuration minimizes torque requirements, reduces maintenance needs, and ensures precise flow modulation even under extreme conditions.

Constructed from high-quality, corrosion-resistant materials with precision-machined components, the valve is built to withstand thermal cycling, abrasive media, and corrosive fluids. Its robust construction ensures long-term reliability, consistent sealing, and operational safety, making it ideal for both critical isolation and continuous throttling applications.

The valve supports manual, electric, or pneumatic actuation, allowing integration into automated control systems for responsive and accurate flow management. Widely used across heavy industries, this valve reflects SUDE Engineering Private Limited’s commitment to innovative design, operational excellence, and high-performance industrial solutions.

Technical Specifications

Parameter
Specification
Shapes Available
Circular
Size Range
DN 100 to DN 3000
Flow Media
Air, gas, flue gas, steam, or process fluids
Blade Type
Triple offset disc type
Sealing Efficiency
100% tight shut-off (zero leakage)
Sealing Type
Metal-to-metal laminated seal ring
Temperature Range
Up to 750°C (depending on material selection)
Material of Construction
Carbon steel, stainless steel, or alloy steel
Pressure Rating
Up to 10 bar or as per design requirement
Drive Operations
Electric, pneumatic, or manual gear operation
Testing Standards
API 598 / EN 12266 for leak and pressure testing
Design Standards
ASME, API 609, or ISO 5752 as applicable

Working Principle:

Disc Movement
The valve disc rotates on a triple-offset axis to provide non-rubbing, frictionless sealing action.
Opening Operation
Rotation of the actuator opens the valve, allowing smooth flow with minimal resistance.
Closing Operation
The disc moves into position and seals metal-to-metal against the seat, ensuring tight shut-off.
Seal Integrity
Offset geometry ensures sealing surfaces contact only at final closing, extending seat life and reliability.

Key Features & Advantages

  • Advanced triple-offset geometry for zero friction and long service life
  • Laminated metal seat ensures tight shut-off under thermal expansion
  • Smooth, low-torque actuation with high repeatability
  • Wear-free seat and disc design minimizes maintenance downtime
  • Available in wide range of materials, drives, and end connections

Why Choose Triple Eccentric Butterfly Valve – Series 1921?

  • Proven reliability in high-temperature and pressure service conditions
  • Designed for zero-leakage sealing and extended operational life
  • Supported by Sude Engineering’s field experience and technical expertise
  • Precision-built for durability, safety, and superior flow control

SUDE Triple Eccentric Butterfly Valve Advantage:

The advanced triple-offset geometry ensures zero friction and extended service life, while the laminated metal seat provides tight shut-off even under thermal expansion.
It offers smooth, low-torque actuation with high repeatability, features a wear-free seat and disc design for minimal maintenance, and is available in a wide range of materials, drives, and end connections for customization.

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