Heavy Duty Flange Dismantling Joint

Full-thread double Flange disassembly joint: An innovative solution for pipe connection driven by threads
In the connection technology of modern pipeline systems, the Full-Threaded Double Flange Joint, with its exquisite structure and multiple functions, has become the "connection hub" of flange pipelines. It is composed of core components such as the main body, sealing ring, cover, and extension and shortening tube. The core difference lies in the thread form - the full-thread type covers the entire length of the connecting part, while the semi-thread type only processes threads on one side. Both designs adopt a dual structure of "thread locking + flange positioning" Form efficient synergy with components such as Rubber Expansion Joint, Bellow Expansion Joint, Flexible Metal Hose, Flange Adaptor and Duckbill Check Valve, Reshape the efficiency and reliability of pipe connections. ​

The convenient installation feature makes the full-thread double-flange disassembly joint an "installation accelerator" for double-sided flange pipes. For the design of pipelines with Flange connections on both sides, its thread adjustment function can precisely adapt to the distance between the Valve and the pipeline. When installing the Duckbill Check Valve, the concentricity of the check valve flange and the pipeline flange can be quickly calibrated through the full thread structure, combined with the standardized interface of the Flange Adaptor. Shorten the construction period of traditional flange connections by more than 30%. The advantages of lightweight and small volume are particularly prominent in narrow Spaces. When transporting and installing the Flexible Metal Hose, positioning can be completed without heavy hoisting equipment, avoiding installation deviations caused by heavy components and significantly enhancing construction flexibility. ​

Reliable sealing performance is the core advantage for ensuring the safety of the system. The sealing ring and the threaded locking structure form a "labyrinth seal", which can effectively block the leakage path of the liquid. This feature can form a "double protection" with the high-pressure resistant seal of the Flexible Metal Hose when connected to the flexible metal hose for transporting flammable media. When connecting the Duckbill Check Valve in the sewage network, the thread preload combined with the elastic deformation of the sealing ring can completely eliminate the leakage risk at the connection between the check valve and the pipeline, meeting the strict requirements of environmental protection emissions. ​

The high reusability and easy-to-disassemble and assemble design significantly reduce the operation and maintenance costs of pipelines. The Joint can still maintain the sealing accuracy after multiple disassemblies and assemblies. Combined with the function of Dismantling Joint, during system maintenance, the pipe can be quickly disassembled, and the aging Rubber Expansion Joint can be easily replaced or the Bellow Expansion Joint can be inspected. The full-thread type's full-locking design is particularly suitable for high-pressure pipelines, while the semi-thread type has a greater cost advantage in single-sided Flange connections. Both types can be flexibly adapted to different specifications of pipe components through flange adaptors, reducing the inventory pressure of spare parts. ​

The automatic compensation function brings "invisible energy conservation" to the pipeline system. It can compensate for the thermal Expansion and contraction of the pipeline through the slight expansion and contraction of the extension and shortening pipe, adapt to installation misalignment and operation deflection, and can replace part of the function of Bellow Expansion Joint in medium and small temperature difference working conditions, eliminating the input of costly compensators. When used in conjunction with Rubber Expansion Joint, the rubber expansion joint absorbs vibration energy, and the fully threaded disassembly joint compensates for residual displacement. The two work together to eliminate pipeline stress generated by the operation of pumps and valves. When connecting the Flexible Metal Hose, its compensation function can counteract the slight deformation of the metal hose under the impact of the medium, protecting the structural integrity of the corrugated pipe and the mesh sleeve. ​

In scenario-based applications, the differentiated design of the full-thread double-flange disassembly joint precisely matches diverse demands. The full-threaded type works in coordination with the Bellow Expansion Joint in industrial high-pressure oil pipes. The full-threaded locking withholds the high-pressure thrust, and the bellows compensate for the displacement due to changes in oil temperature. The semi-threaded type is connected to the Rubber Expansion Joint in the municipal water supply network. The single-sided thread simplifies the installation process, and the rubber parts reduce the water flow noise. In the sewage treatment plant, the Duckbill Check Valve is connected through the Flange Adaptor. The semi-threaded design facilitates quick disassembly, assembly and maintenance, and the sealing performance prevents sewage from flowing back and polluting the clear water tank. ​
From the precision pipelines in factory workshops to the underground pipe network systems in cities, the all-thread double-flange disassembly joints, with their innovative structure of "thread adjustment + flange positioning", have redefined the efficiency standards for pipe connections. It makes the Flexible transmission of the Flexible Metal Hose more stable, makes the anti-backflow of the Duckbill Check Valve more reliable, and through the adaptive bridge of the Flange Adaptor It forms a functional closed loop with Rubber Expansion Joint and Bellow Expansion Joint. With multiple advantages such as convenient installation, reliable sealing and energy-saving compensation, it has become a core connection component with both technological innovation and practical value in modern pipeline engineering. ​