Expansion joints are an important component of piping systems because they absorb the movement of pipes, ducts and other components due to thermal expansion and vibrations. This allows a pipe system to move freely without compromising the integrity of its design or causing structural damage.
The primary function of an expansion joint is to absorb axial, lateral and angular pipe movement. These movements are caused by thermal expansion and can be a result of the heating or cooling of the pipe system. They also occur when the piping system is subjected to mechanical vibrations.
Depending on the type of pipe and the amount of movement it needs to absorb, expansion joints can be designed in various shapes. They can be rectangular, circular, square or octagon. They can even be made in different materials to withstand specific temperature and pressure conditions.
rubber joint is a common material for expansion joints because it is able to withstand high temperatures and pressures, as well as resist chemicals. This makes it an excellent choice for industrial applications such as power plants, flue gas desulphurization units and other industries where chemical resistance is needed.
Elastomeric and fabric-based materials are often used for expansion joints because they are able to withstand continuous movement, resist corrosion and maintain their strength. They are also cost-effective, and they provide the flexibility that is needed for a variety of design scenarios.
A flexible sealant is then applied to the inside of the expansion joint to prevent water or other substances from entering the gap. This is done to reduce rust, corrosion and other issues that can lead to premature failure of the joint.
Concrete is another popular material for expansion joints because it provides a strong, permanent solution that does not require additional support. This means that it is ideal for use in areas where space is limited, such as a basement.
In order to properly install a concrete expansion joint, it is necessary to remove the old concrete from the joint and clean the surface. This can be accomplished by using a commercially available cleaning agent and a stiff bristle brush. The area must then be rinsed thoroughly and dried before applying the sealant.
If there are a large number of joints, it may be necessary to hire an experienced installer to perform this work. They will have experience installing a wide range of joint types and sizes and can ensure that your piping system is protected.
For example, a concrete joint for an air conditioning system might need to be installed in an area where there is a high level of humidity, such as a kitchen or bathroom. A specialist installer will be able to choose the best sealant for the job and install it correctly so that the piping system is protected from a range of environmental hazards.
The lining of the pipe system is also an important consideration when designing and installing expansion joints. Several materials can be used, including copper, aluminum and stainless steel. All of these types are resistant to corrosive chemicals and will withstand a variety of temperature and pressure conditions.