24 Inch single tied pipe expansion joint fabricated from stainless steel
This pipe expansion joint is simply a bellows element with end connections. Regardless of accessories, such as liners and covers, it will deflect in any direction or plane that the bellows will. It is the least expensive type, but requires that the piping be controlled as to the direction of the movements required of the unit. The pipe expansion joint should not be expected to control the movement of the pipe. If the piping analysis shows that the pipe expansion joint must accept axial compression, then the piping must be guided and constrained so that only that movement will occur. Read More...
This expansion joint will not resist any deflections with any force other than the resistance of the bellows, which is a function of the spring rate times the deflection amount. It is incapable of resisting the pressure thrust along its axis, which is the product of the pressure times the effective, or cross sectional, area of the bellows. Large diameter units, even with low pressures, can generate very large axial pressure thrust forces, which must be reacted by main and directional anchors. Otherwise the expansion joint will extend with disastrous results.
- Data Tables - Expansion Joint Catalog
- Absorbs small amounts of axial, lateral, and angular movements
- Deflect in any direction
- Most economical
- Must be guided
- Requires main and directional anchors
- Types of Metallic Bellows Deflections
- How to Test a Pipe Expansion Joint
- How do metallic bellows function? (Technical Article)
- How to look for signs of expansion joint failure (Technical Article)
- U.S. Bellows Customers and Project Experience
- View our U.S. Bellows Brochure
- Blog: Articles on Single Pipe Expansion Joints