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Card sleeve type pipe joint connection characteristics

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Abstract:At present, a relatively advanced structure of the...

At present, a relatively advanced structure of the pipe connection method has been adopted at home and abroad, namely the card sleeve type pipe joint connection method. In 1983, the National Bureau of Standards promulgated the universal card sleeve connection standard. There are many types of card sleeve connections, such as squeeze type, expansion type, self-supporting type, and bite type. According to the standards issued by the National Bureau of Standards, the ferrule type of our country belongs to the squeeze type and the bite type, and its structure is composed of three parts: a connector body, a ferrule and a nut. The key part is a ferrule—a metal ring with a cutting edge (the ferrule for indoor hot water heating is a rubber ferrule).

Card sleeve type pipe joint connection characteristics

The connection characteristic of the card sleeve type pipe joint is to rely on the cutting edge of the card sleeve to tightly bite the wall of the steel pipe, so that the high-pressure fluid in the pipe is completely sealed.

This joint also has the characteristics of anti-loose structure, impact resistance and vibration resistance. The articulation tube joint is suitable for high pressure systems with small diameters. Extrusion tube joints are suitable for medium and low pressure pipes, such as indoor hot water heating, water supply, hot water, and gas pipes. The current aluminum-plastic pipe connection is an extruded tube joint connection. Because the indoor heating pipes, hot water, water supply and gas pipelines adopt the above-mentioned connection process, the screw connection is reduced, the labor intensity of the plumber is greatly improved, and the engineering cost is effectively reduced (because the screw connection of the indoor heating pipe requires a live joint or Filament connection, and the use of ferrule type pipe joints can reduce unions or pipe clamps, filaments, roots, and reduce leakage points). Because no special tools and dynamic welding are needed, pipelines in flammable, explosive areas and high-altitude places are particularly suitable.