Description
Metallic Expansion Joints with Fixed Flange
Overview
Metallic expansion joints with fixed flanges feature stainless steel bellows elements permanently welded to fixed flanges. This construction provides a leak-tight, robust connection suitable for high pressure, high temperature and critical service applications where maximum reliability is required.
Features
- Stainless steel bellows welded to fixed flanges
- Single or multi-ply bellows construction
- Leak-tight permanent flange connection
- Suitable for high pressure and temperature
- Corrosion and erosion resistant
- Pressure tested and certified
- Manufactured to international standards
Applications
- HVAC chilled water and hot water systems
- Steam and condensate piping
- Industrial process piping (chemical, petrochemical, pharmaceutical)
- Power plant piping and turbine connections
- Boiler feed water and condensate return
- Exhaust systems and flue gas ducting
- High-pressure and critical service applications
Construction Types
Single Ply Bellows: One layer of stainless steel – suitable for lower pressures, maximum flexibility.
Multi-Ply Bellows (2-3 plies): Multiple layers for higher pressure rating and increased safety factor.
With Liner/Sleeve: Internal flow liner prevents turbulence and protects bellows from erosion.
Benefits
- Permanent leak-tight flange connection
- Maximum reliability for critical applications
- Suitable for high pressure and temperature
- Corrosion-resistant stainless steel
- Absorbs thermal expansion and vibration
- Reduces stress on equipment and piping
- Manufactured and tested to international codes
Quality Assurance
- Material certifications
- Hydrostatic pressure testing
- Visual and dimensional inspection
- Helium leak testing (on request)
- Radiographic testing (on request)
- Full traceability and documentation
Installation Guidelines
- Align piping carefully before bolting flanges
- Use proper gaskets and bolt torque sequence
- Allow clearance for bellows movement
- Install limit rods if provided
- Use pipe guides and anchors per design
- Do not use bellows to correct major misalignment
Contact RMS Corporation with your piping specifications (size, pressure, temperature, media, movement requirements) for metallic expansion joint selection, engineering calculations and certified drawings.
