Drag chains in HVAC systems

Drag Chains in HVAC Systems


In HVAC systems, the use of drag chains plays a crucial role in ensuring the efficient and reliable operation of various equipment and machinery. These chains are designed to protect and manage the cables and hoses used in the system, preventing damage caused by excessive bending, abrasion, or tangling. In this article, we will explore the importance of drag chains in HVAC systems and their various applications.

1. Understanding Drag Chains

Drag chains, also known as cable carriers or energy chains, are flexible modular structures that enclose and guide cables, hoses, and other components. These chains consist of interconnected links or segments, allowing for smooth movement and protection of the enclosed elements. They are commonly made from high-quality materials such as plastic or metal, offering durability and flexibility.

2. Benefits of Drag Chains

2.1 Enhanced Cable Protection

Drag chains provide excellent protection to cables, preventing them from being exposed to external elements, such as sharp edges or extreme temperatures. This safeguarding ensures the longevity and optimal performance of the cables within HVAC systems.

2.2 Improved Cable Management

By neatly organizing and guiding the cables, drag chains facilitate efficient cable management in HVAC systems. This organized arrangement reduces the risk of cable entanglement, allowing for easier maintenance and troubleshooting.

2.3 Flexible Movement

The design of drag chains allows for smooth and flexible movement of the enclosed cables. This flexibility accommodates the dynamic requirements of HVAC systems, ensuring unrestricted motion of the cables during equipment operation.

3. Applications of Drag Chains in HVAC Systems

3.1 Air Handling Units

Drag chains are essential components in air handling units, where they protect and manage the cables connecting various components, such as fans, filters, and dampers. The chains ensure the safe and reliable operation of these units, minimizing the risk of cable damage and system malfunction.

3.2 Ventilation Systems

In ventilation systems, drag chains are used to safeguard the cables associated with fans, air ducts, and control panels. These chains ensure the proper functioning of the ventilation system, allowing for efficient air circulation and temperature control.

3.3 Chilled Water Systems

Drag chains are also employed in chilled water systems to protect the cables responsible for transporting chilled water to different parts of the HVAC system. The chains maintain the integrity of the cables, preventing leaks or damage that could compromise the cooling efficiency.

Drag Chain in HVAC System


In conclusion, drag chains are indispensable components in HVAC systems, offering crucial cable protection and management. Their flexible design and numerous applications make them vital for ensuring the reliable and efficient operation of various HVAC equipment. At our leading company in the Chinese chain market, we specialize in providing high-quality drag chains, flexible chains, plastic drag chains, bush chains, plastic chains, tabletop chains, multiflex chains, and more. With 300 sets of advanced automatic CNC production equipment and fully automated assembly devices, we are committed to delivering top-of-the-line products, competitive prices, and excellent customer service. We welcome custom orders based on customer specifications and samples.

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Author: Czh