The number of tie-rods used is determined by the design pressure of the expansion joint. It can range from two to eight tie rods in extremely high-pressure conditions.
![Universal ej drawing](https://usbellows.com/wp-content/uploads/1990/07/universal-EJ-drawing-300x119.jpg)
The number of tie-rods used is determined by the design pressure of the expansion joint. It can range from two to eight tie rods in extremely high-pressure conditions.