Expansion Joint Installation and Usage Precautions

Expansion Joint Installation and Usage Precautions

Installation

Prior to the expansion joint installation, carefully read the installation manual and piping construction drawings, and formulate the installation steps.

Planners and installation personnel must be clear on these steps and the special instructions provided by the manufacturing facility, and inspect the fixed pipe brackets and scenes.

Ensure that pipe racks meet design specifications, inspect the type, size, and quantity of expansion joints, and confirm their suitability.

Installation can only be performed after the expansion joint is in perfect condition. The most critical precautions for installing expansion joints are as follows:

During the installation process, it is essential to carefully protect the thin-walled parts, such as bellows, from being struck, scratched, or pierced.

Damage caused by welding spatter and other factors.

Do not remove the transportation restraint device from the expansion joint until the installation is complete.

4 Any displacement of the expansion joint (compression, elongation, or lateral movement) that was not previously considered and not accounted for during design.

Lateral displacement, angular displacement> Should not be borne by the expansion joint. The piping system should be adjusted to accommodate the expansion joint, not

Utilize the adjustment of expansion joints to compensate for installation deviations in pipelines.

Absolutely no twisting of the bellows allowed.

Do not allow hoists or any lifting devices to act directly on the bellows. Do not apply force to the bellows.

Scrub with wire brush.

Do not allow welding splatter to fall onto unprotected bellows; wet, chlorine-free asbestos may be used.

Protective Layer.

8 Fixed brackets, guide brackets, and supports must be installed strictly according to the pipeline system diagram; all guides

Do not conduct pressure tests until the supports and fastening supports are confirmed to be properly installed. The entire pipeline system

For pressure testing to be conducted in segments, it is imperative to consult with the manufacturer and confirm in advance.

For expansion joints with flow direction requirements, the installation should align the flow arrow of the medium with the direction of medium flow.

Directional Consensus.

When installing single-type and compound bellows-type expansion joints, attention should be paid to ensuring that the chain plate plane aligns with the compensation

Pipes are parallel and flat.

Once the fixed supports or other fixed points of the pipeline are in place, and the pipeline receives proper support.

And guidance, the transportation fastening devices on the expansion joint (the yellow-painted section) should be removed, unless otherwise specified.

The expansion joint is designed to compensate for changes in surrounding temperatures during future installation processes.