Expansion joints are flexible connections installed in piping and ducting systems to accommodate thermal expansion and/or vibration caused by changes in temperature, pressure, media and more. With more than 50 years of experience, EagleBurgmann Expansion Joint Solutions is one of the most experienced and innovative expansion joint manufacturers worldwide. As a Freudenberg company, EagleBurgmann Expansion Joint Solutions handles the design, manufacture, technical support and service of its fabric metal expansion product line.
Metal Expansion Joints Bellows Design
A key feature and basic element of these expansion joints is the bellows. The design of the bellows is predominately determined by movement, pressure, temperature, service life, materials and corrosion.
Bellows are manufactured by forming corrugations, or convolutions, in thin-walled metal cylinders.
These cylinders can then be inserted inside each other to form multi-ply bellows. All bellows are formed in their cold state, with optional heat treatment performed afterwards if applicable.
The bellows, like those found in the EagleBurgmann MBS682 seals, provide flexibility of movement and are designed to absorb axial compression (up to 50%), lateral offset (±20%) and angular movement.
Welding integrity and product quality can be verified with various non-destructive tests and are carried out in-house or externally with supervision. Tests include:
- Dye Penetration
- Magnetic Particle
- Helium Leak
- Ultra Sonic
EagleBurgmann Expansion Joint Solutions offers a full range of metal expansion joints from round and rectangular ducting expansion joints to highly engineered and complex FCCU parts.
From DN15 (1/2”)
Temperature Range: -200ºC (-325ºF) to 1400ºC (2500ºF)
Pressure: Vacuum to 14,000kPag (2,000 psi)
Fabric Expansion Joints Design
The fabric expansion joints consist of variety of build up using one or more layers of material in the construction. The essential layer of the fabric expansion joint is the sealing layer, that ensures tightness of the connection. The choice of material and construction is determined by movement, temperature, chemical composition of the flow medium and pressure.
The fabric expansion joint can be delivered either as soft parts only, that can be mounted directly on the duct or on existing steel frames, or it can be delivered pre mounted on steel frames as a complete drop in unit.
Fabric expansion joints are very flexible connections with nearly no reaction forces, which makes it the ideal for use in fluegas ducts and by installation sensitive to reaction forces (for example gas turbine installations).
Materials used for EB fabric expansion joints are subjected to tests to ensure that the materials used for manufacturing fulfills satisfactory values both before and after exposure to high temperatures or chemical exposure.
EagleBurgmann Expansion Joint Solutions offers fabric expansion joints for a wide variety of applications from low temperature unaggressive air handling connections to high temperature gas turbine exhaust systems or chemical aggressive applications.
According to customer requirements.
Temperature Range: -35ºC (-31ºF) to 1000ºC (1832ºF)
Pressure: -0,35 bar to 0,35 (-5,08 PSI to 5,08 PSI)
Installation and Service
Proper installation of expansion joints is key to increasing service life and maintaining reliability. EagleBurgmann Expansion Joint Solutions field services technicians have extensive experience helping customers reduce costs, decrease outage time and eliminate installation problems quickly and safely.
Comprehensive services include:
- Evaluations and Troubleshooting
- Initial Dimensional Measurements
- Pipe Stress Analysis
- Installation and Refurbishment
- Supervision and Training
- Onsite Repair – Online and Offline
- Emergency Services
- Final Inspection
- Experienced Service Engineers
For more information on EagleBurgmann Expansion Joint Solutions, contact John Cejka at firstname.lastname@example.org.