Technical Specifications

Design and Operating Principle

Rectangular corrugated expansion joints consist of a specially engineered metal bellows structure designed for rectangular or square duct systems. The corrugated bellows geometry allows controlled absorption of thermal expansion and mechanical movements within the system.

This flexible structure, used in large cross-section duct systems, reduces the transmission of vibration and mechanical stresses to the ductwork. Flanged or welded connection options provide suitable solutions for different process and duct configurations.

These designs are optimized according to project-specific dimensions and movement requirements, ensuring safe operation in high-temperature gas and air applications.

Performance Advantages

• Ideal solution for rectangular and square duct systems
• High flexibility in large cross-section ducts
• Absorbs thermal stresses
• Reduces vibration and mechanical loads
• Provides leak-tight and durable construction
• Suitable for high-temperature applications
• Long service life
• High project-based design flexibility

Operating Values

Operating Pressure

• Maximum 5 bar
• (depending on cross-section size and bellows geometry)

Operating Temperature

• -20°C / +450°C
• (depending on bellows and housing material)

Movement Capabilities

• Axial Movement: ±10 mm – 50 mm
• Lateral Movement: ±10 mm – 80 mm
• Angular Movement: ±2° – 6°

Note: In large-section rectangular expansion joints, pressure capacity may be lower compared to circular expansion joint designs.