How does a split rigid coupling accommodate changes in pipe length due to thermal expansion?

A split rigid coupling accommodates changes in pipe length due to thermal expansion through its unique design, which allows for controlled movement while maintaining a secure connection. Here's how it works:

1. Flexible Design: Unlike traditional rigid couplings, which consist of a single-piece housing, split rigid couplings are comprised of two halves that can be separated and bolted back together around the pipe joint. This split design provides flexibility, allowing the coupling to accommodate changes in pipe length without compromising the integrity of the connection.

2. Axial Movement: When the pipe undergoes thermal expansion or contraction, one end of the pipe may move relative to the other. The split coupling allows for axial movement of the pipe ends within the coupling housing, preventing excessive stress or strain on the piping system.

3. Slip Joints: Inside the split coupling housing, there may be slip joints or expansion gaps designed to absorb the movement of the pipe ends. split rigid coupling  These joints provide a degree of flexibility, allowing the pipe to expand or contract while maintaining a continuous seal and alignment.

4. Bolted Closure: The two halves of the split coupling are securely fastened together using bolts or screws. This bolted closure ensures that the coupling remains intact and provides structural support even as the pipe undergoes thermal movement.

5. Gasket Sealing: A gasket is typically used to create a watertight seal between the two halves of the coupling and the pipe ends. The gasket material is selected for its resilience and ability to accommodate movement without compromising the seal.

6. Torque Control: During installation, the bolts or screws securing the split coupling are tightened to a specified torque. This torque setting is carefully calibrated to allow for controlled movement of the pipe while maintaining the necessary clamping force to prevent leaks or separation.

7. Expansion Loops: In some applications, expansion loops or bends may be incorporated into the piping system to further accommodate thermal expansion. These loops provide additional flexibility and help distribute movement along the length of the pipe.

By incorporating these design features, a split rigid coupling effectively accommodates changes in pipe length due to thermal expansion, ensuring a secure and reliable connection in piping systems subjected to temperature variations.