Single Hinged Expansion Joints
The single hinged expansion joints are made of one single bellows element fitted with welding ends or flanges plus a system of articulated supports which allow for angular movement in one plane only. The hinge mechanism is designed to accept full pressure thrust.
The single hinged metal expansion units do not allow axial movement however, some types of hinge systems can be provided with holes for the hinge pin that are slotted to allow limited axial displacement.
These “slotted hinge” types of metal expansion joints can not resist the pressure thrust forces and therefore proper anchorage must be provided.
Hinged Metal Expansion Joints - flanged
Hinges are mounted to limit the expansion joint to absorb movements in only one plane in the hinged metal expansion joints. Due to the hinges the expansion joint is not able to absorb axial movement. The hinge is likewise designed to protect the bellow from torsion. These movement limiters reduce the loads from the pressure thrust force and the temperature of the pipeline. The pressure thrust force from the media is in this way absorbed in the pipeline. The hinges are designe..
Hinged Metal Expansion Joints - welding ends
Hinged Metal Expansion Joints - welding ends The hinged expansion joints are made of one single bellows element fitted with welding ends plus a system of articulated supports which allow for angular movement in one plane only. The hinge mechanism is designed to accept full pressure thrust. These units do not allow axial movement however, some types of hinge systems can be provided with holes for the hinge pin that are slotted to allow limited axial displacement. These “slot..
What are the primary applications of single hinged expansion joints?
Single hinged expansion joints are predominantly used in piping systems where **angular movement** is required in a single plane. They are ideal for absorbing thermal expansion and contraction in systems that experience lateral movements, such as in steam, gas, and fluid transport applications.
How do single hinged expansion joints handle pressure thrust?
The hinge mechanism of single hinged expansion joints is specifically designed to accommodate **full pressure thrust**. This means that while they only allow angular movement, they can effectively manage the forces exerted by internal pressure without compromising the integrity of the joint.
What is the difference between single hinged expansion joints with welding ends and those with flanges?
The primary difference lies in the method of **connection** to the piping system. Single hinged expansion joints with welding ends are directly welded to the pipes, providing a more rigid installation, while those with flanges allow for easier disassembly and maintenance by using bolted connections. For more details, you can explore our Hinged Metal Expansion Joints - welding ends and Hinged Metal Expansion Joints - flanged.