Single SS Expansion BellowsSingle Tied SS Expansion Bellows
| Feature | Single SS Expansion Bellows | Single Tied SS Expansion Bellows |
|---|
| Description | A single-layered stainless steel expansion joint without any tie rods. | A single-layered stainless steel expansion joint with tie rods attached for load support. |
| Design | Consists of a flexible bellows element. | Includes flexible bellows and tie rods to control movement. |
| Movement Control | Allows axial movement (compression and extension). | Allows axial movement but also controls lateral and angular movements. |
| Support for Lateral Movement | Not designed to support lateral movement on its own. | Supports limited lateral movement with the help of tie rods. |
| Pressure Thrust Absorption | Absorbs pressure thrust, which may need additional anchors. | Tie rods absorb the pressure thrust, reducing the load on anchors. |
| Installation Requirements | Requires anchors and guides to control pressure thrust. | Fewer anchoring and guiding requirements due to tie rods managing pressure thrust. |
| Typical Applications | Used in pipelines where there is mainly axial movement. | Suitable for applications where axial, limited lateral, and angular movements are required. |
| Cost | Generally more economical than tied expansion bellows. | Slightly higher cost due to the inclusion of tie rods. |
| Space Requirements | Requires more space for installation compared to tied bellows. | Requires less space because tie rods help control movement. |
