Compact Double Flanged Dismantling Joint

Semi-threaded double Flange disassembly joint: A flexible and efficient new choice for pipe connection
In Flange connection pipe systems, the Half-Threaded Double flange Joint, with its unique threaded design and practical structure, has become the preferred connection component for balancing installation flexibility and cost-effectiveness. It is composed of two flange plates, sealing gaskets, bolts, nuts and other components. The core difference from the full-thread double flange disassembly joint lies in that the bolts do not pass through the entire length of the joint but only through part of the area. This design enhances the flexibility of installation and disassembly while reducing costs. In coordination with components such as Rubber Expansion Joint, Bellow Expansion Joint, Flexible Metal Hose, Flange Adaptor and Duckbill Check Valve, Provide efficient connection solutions for multi-scenario pipeline systems. ​

The convenient installation process is a significant advantage of the semi-threaded double flange disassembly joint. When installing, only align the two flange plates and tighten the bolts and nuts to complete the connection. This eliminates the full thread alignment step of full-threaded joints, significantly saving labor and time costs. When connecting the Duckbill Check Valve , the simple installation process can quickly fix the check valve to the pipeline. Combined with the standardized interface of the Flange Adaptor, it can easily adapt to valve components of different specifications. When installing the Flexible Metal Hose, positioning can be completed without complex tools. Especially in pipe shafts with narrow Spaces, the flexible installation method can avoid project delays caused by operational restrictions and significantly improve work efficiency. ​

Excellent sealing performance stems from precise structural design. Through the elastic deformation of the sealing gasket and the preload of the bolts, the semi-threaded double flange disassembly joint can ensure a stable and reliable connection, and the reduced number of bolts lowers the risk of leakage caused by uneven bolt tightness. In pipelines transporting media such as seawater and fresh water, it forms a "double protection" with the corrosion-resistant seal of the Flexible Metal Hose. The mesh sleeve of the metal hose resists the erosion of the medium, and the sealing gasket at the joint blocks the leakage path. When connecting the Duckbill Check Valve in the sewage network, the gasket fits closely with the flange surface, which can completely eliminate the hidden danger of sewage leakage at the connection between the check valve and the pipeline, meeting the environmental protection requirements. ​

The strong load-bearing capacity provides solid support for the pipeline system. The joint features high strength and stability, capable of withstanding the pressure and vibration of the pipeline system. Its reinforcing ribs and support structure effectively enhance the overall strength. When working in coordination with the Bellow Expansion Joint, it can stably bear the axial force generated by the expansion and contraction of the bellows, ensuring the connection safety of high-temperature and high-pressure pipelines. When connecting the Rubber Expansion Joint, it can withstand the reaction force generated during the shock absorption process of the rubber expansion joint, prevent the joint from loosening due to long-term vibration, and ensure the stable operation of the system in vibrating environments such as pump and valve operation. ​

The wide adaptability makes the semi-threaded double flange detachable joint suitable for various scenarios. It can handle various media such as seawater, hot and cold water, drinking water, domestic sewage, crude oil and fuel oil, and maintain stable performance under different working conditions. When problems such as displacement, deflection and misalignment occur in the pipeline due to thermal Expansion and contraction, the Joint can play a certain compensating role and complement the Bellow Expansion Joint in the scenario of large displacement compensation - the bellows handle the main displacement, and the semi-threaded joint compensates for minor deviations. Through the Flange Adaptor, it can be flexibly connected to the Flexible Metal Hose to adapt to the angular deviation of the metal hose during installation. It can also be combined with the Rubber Expansion Joint to play the dual functions of shock absorption and connection in municipal water supply and drainage, industrial circulating water and other systems. ​

In practical applications, the advantages of semi-threaded double flange disassembly joints work in synergy with various pipe components to enhance efficiency. In the municipal drinking water pipe network, it is connected to the Rubber Expansion Joint through the Flange Adaptor. The simple installation process reduces the construction difficulty. The rubber expansion joint reduces the vibration of water flow, and the sealing performance of the joint ensures the safety of drinking water transportation. In the crude oil transportation pipeline, in coordination with the Bellow Expansion Joint, the high-strength joint bears the crude oil pressure, and the bellows compensates for the temperature difference displacement. The two jointly ensure the stability of oil transportation. In the sewage treatment plant, when connecting the Duckbill Check Valve, the semi-threaded design facilitates quick disassembly, assembly and maintenance. The sealing gasket prevents sewage from flowing back. Combined with the function of Dismantling Joint, the system maintenance efficiency is significantly improved. ​

From civil pipe networks to industrial pipelines, semi-threaded double flange disassembly joints, with their characteristics of "flexible installation + reliable sealing + cost advantage", have become a practical choice for pipeline connections. It makes the Flexible connection of the Flexible Metal Hose more convenient, makes the anti-backflow function of the Duckbill Check Valve easier to maintain, and through the adaptation effect of the Flange Adaptor It forms functional synergy with Rubber Expansion Joint and Bellow Expansion Joint, providing stable, efficient and economical connection solutions for pipeline systems under various media and working conditions, highlighting the core value of "practical design" in modern pipeline engineering.