Technical Specifications

Design and Operating Principle

Lens expansion joints consist of metal diaphragms formed in a lens shape and joined by welding. This special construction allows controlled absorption of low-level axial movements in pipeline systems.

Single-lens or multi-lens design options provide suitable solutions for different pressure and movement requirements. Thanks to their compact construction, they offer safe use in limited installation spaces.

Lens expansion joints can be manufactured with flanged or welded connections and are optimized for long service life under high pressure and temperature conditions.

Performance Advantages

• Safe operation under very high pressure conditions
• Suitable for high-temperature applications
• Ideal solution for systems with low movement requirements
• Compact design suitable for confined spaces
• Low fatigue risk
• Long service life
• Reliable performance in critical process applications
• High mechanical strength

Operating Values

Operating Pressure

• Maximum 150 bar
• (depending on DN size and number of lenses)

Operating Temperature

• -196°C / +600°C
• (depending on material selection)

Movement Capabilities

• Axial Movement: ±2 mm – 10 mm
• Lateral Movement: Not suitable
• Angular Movement: Not suitable

Note: Lens expansion joints are specially designed for high-pressure systems with low movement requirements.