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Fabric expansion joint installation: how to do the joint?

Home news-posts Fabric expansion joint installation: how to do the joint?

Fabric expansion joints are critical for HVAC, industrial duct, flue gas systems, absorbing vibration, thermal expansion and reducing noise. Poor installation causes leakage, air loss, short service life and system breakdown.So before installation, you need to clearly understand whether it is a new pipeline or a replacement of an old expansion joint. If it is a new pipeline, you can make the expansion joint in a simplified material way. If it is a replacement, you must understand the original installation method, as this can avoid many design errors that cause losses.
Let’s first take a look at the two installation methods：

1.Flange fabric expansion joint installation version.

For this kind of skin fabric expansion joints, we will make the folded edges into a rolled edge style, so that they can be pressed down by angle steel flanges during installation. For this type of skin, we will assemble the joints as a whole and then ship them together. They can be directly installed on site. However, the drawback is that the manufacturing size needs to be extremely precise. If you measure the size incorrectly, it won’t be able to be installed. Moreover, this kind of manufacturing process consumes a lot of materials and labor, so the price of such fabric expansion joints will be a little higher.

2.Ligament fabric expansion joint installation version.

This installation method is such that the fabric expansion joint is in a long strip shape. Regardless of whether the expansion joint is circular or square, the installation is very convenient. Just enclose the expansion joint, press the skin down with the strips, and then tighten the nuts – and it’s done. This production method is very convenient and also saves materials.However, to install this fabric expansion joint, you will need to do the joint.

How to do the joint?

The fabric expansion joint is made by sewing multiple layers of materials together. Therefore, after forming a circle, the two ends need to be joined together.

How to do the joint?Each layer of material is laid out in an interlaced and interlocking manner, with each layer locking and interlocking with the adjacent layers. The layers are firmly combined and inseparable from each other. When the last layer of fabric is laid out, a complete layer of sealant is applied on the fabric surface to form an airtight isolation layer, effectively preventing gas leakage. Finally, the edges are pressed and compacted tightly to secure the position, and the entire construction is completed.

 

Regarding all kinds of difficulties encountered during the installation of fabric expansion joints, there is no need to worry. You can consult Pin Yi. Relying on our rich project experience, we will analyze the on-site situation for you and provide suitable solutions and practical suggestions. If you encounter any installation problems, you can consult Pin Yi. We will solve these problems for you and offer you good suggestions.