What are the functions of rubber expansion joints in heating pipelines?

We all know that there are many types of Rubber Expansion Joints and they are used in a wide range of applications. However, the Flange type is commonly used, exhibiting different characteristics when applied in different areas. We often hear that they are used in water supply and drainage pipelines, and some manufacturers highly recommend their application in heating pipelines. So, what are the actual functions of rubber expansion joints in heating pipelines? Today, let's discuss this topic.

It consists of flange Rubber Expansion Joint, pipe clamp flanges, transmission rods, and other components, which can reduce working pressure thrust (blind plate force) and compensate for installation deviations. It is suitable for connecting pumps and other accessories.

Application fields: It is applicable for transporting seawater, fresh water, cold and hot water, domestic water, petroleum, gasoline, diesel, lubricating oil, refined oil, gas, liquefied gas, steam with a temperature not exceeding 250 degrees Celsius, and relatively large powdered substances.

The advantages are as follows:

The installation operation is simple and convenient, and it can withstand the radial tensile force of the pipeline.
It is made of metal casting or welding, with a trapezoidal rubber seal ring used in the position, functioning under the effect of the rubber expansion joint and anchor bolts.
It utilizes the basic principle of rubber's compressive elastic deformation. The seal ring is deformed to create a static seal between the pipeline and the inner wall of the pipe itself.
Metal materials and seal rings are selected strictly according to performance indicators and customer requirements. The exterior of the material is sprayed with high-strength anti-corrosion paint, and all connecting anchor bolts are made of high-strength gray iron or other specified materials.
It allows for certain axial and radial displacements because there is a certain gap between it and the pipeline.
In the pipeline, it can reasonably compensate for and reduce the driving force of the pipeline and blind plate, facilitating the installation, maintenance, and replacement of centrifugal pumps. In fact, it is a more satisfactory supporting facility and product in the field of pipeline installation and transportation.