What is the Need of Expansion Joints and Bellows in Piping Systems?
There is hardly any manufacturing industry that does not have the use of piping. It is generally required to carry the fluids and gases, from one place to another. There are various conditions for which a piping system is designed. They can be required in high temperatures as well as low temperatures.
The Use of Expansion Joints and Bellows
Expansion joints and bellows are used in piping systems. They are made of accessories like flow liners, covers and tie rods. The metal bellows act like springs but they are restricted to contain the pressure of the fluid that flows through the expansion joint. A proper flow depends much on the movement of the connected piping.
If expansion joints are removed from the piping systems, high stresses would be created by the thermal expansion. This can cause huge pressure resulting in the crack of the welds and bending of the pipes.
More than a coil, also known as convolution or corrugation is used to make an expansion joint. The corrugations are designed in such a way that they can tolerate the huge pressure of the entire system. The assembly of the bellows is placed in such a way that it can flux under the thermal movement of the connected piping.
Types of Expansion Joints Required in Piping Systems
Common Expansion Joints: The common expansion joints made by the expansion bellows manufacturers are single expansion joints, required for undergoing a small amount of lateral and angular movements in the piping system. You can also have double expansion joints that are made of two or more bellows that are linked by common connectors.
Universal Expansion Joints: These joints generally have two bellows linked with a center pipe and fitted with the tie rods. They are mainly required to absorb any of the three general movements, namely axial, lateral and angular in the piping system. What is beneficial in the universal expansion joints is that they are able to absorb a huge amount of lateral offset.
Hinged Expansion Joints: Another much-required joint in the piping system is the hinged expansion joint. The main purpose of it is to absorb the angular rotation. The joint is made of two hinged plates that are linked to the end connection. The hinged hardware is meant for absorbing the pressure of the expansion joint assembly.
Axial Expansion Joints: The axial expansion joints are mainly required for absorbing the angular movement in any place of the piping system. There are two sets of hinges linked with a floating ring that is responsible for absorbing the pressure of the expansion joint assembly.
Metallic Expansion Joints: Metallic expansion joints are able to withstand huge pressure. They are basically used in the extremely pressurised designs to ensure that the bellows is completely safe from by the outer pipe casing.
If you own manufacturing machinery and want it always working properly, you need to install expansion joints and bellows of high quality. All you need to do before installing them is to know what type is suitable for your system. To have a proper knowledge about them, get in touch with the joints and bellows manufacturers.