Leoni hose fittings Germany Leoni model Leoni price

Leoni hose fittings are a type of high-quality flexible piping in modern industrial pipeline systems. They mainly consist of bellows, braided mesh, and fittings. The inner tube is a thin-walled stainless steel bellows with a spiral or annular shape. The braided mesh layer outside the bellows is woven from stainless steel wire or steel strip according to specific parameters. The fittings or flanges at both ends of the hose are matched to the fittings or flanges of the customer's piping. The bellows of the hose are formed by high-precision plastic deformation of ultra-thin-walled seamless or welded stainless steel pipes. Since the elastic characteristics of the bellows profile determine that the hose has good flexibility and fatigue resistance, it can easily absorb cyclic loads from various motion deformations, especially having the ability to compensate for large displacements in pipeline systems. Media visualization (media visible), process automation.

Leoni hose fitting applications

Hose fittings mainly include threaded connections, flange connections, quick-connect fittings, and other types; different types have different uses. The main components of metal hoses are made of austenitic stainless steel, ensuring excellent temperature resistance and corrosion resistance of the metal hose. Moreover, there are many models of metal hose fittings, and specifications are mainly selected based on the inner diameter. For metal hose fitting models, the main difference lies in the meaning of some threads, such as the common NPT, PT, G, etc., which have different meanings. Consumers should understand what these fittings represent when purchasing and then select according to their needs. Different models correspond to different fittings. In fact, for metal hose fitting models, they correspond to the metal hose, so attention should be paid to certain aspects during selection. First is the choice of connection type, generally including flange connections, threaded connections, and quick-connect fittings, which should be selected according to actual needs. The second aspect is pressure; collection and transportation hoses and fittings should be selected based on the actual working pressure to ensure smooth operation. Additionally, consider the pressure and temperature that the metal pipe fittings can withstand, as well as the corrosiveness of the medium, etc.

Leoni hose fitting precautions

Open type: When the mold fittings and mold water nozzles in high-pressure water hose quick-connect fittings are in an open state, if not connected, the copper sleeve on the female head is pushed to the other end, causing the steel balls to automatically roll outward, allowing the male head to be removed. In this case, since neither the male nor the female head has valves, fluid will flow out. In the connected state, the male head is inserted into the female head, and the copper sleeve is pushed back to its previous position by its spring force, locking the steel balls, allowing fluid to flow; the O ring inside will prevent fluid from leaking out. Combined water hose quick-connect fittings: When the mold water nozzles in high-pressure water hose quick-connect fittings are open and the mold fittings are in a closed state, if not connected, the copper sleeve in the female head will move to the other end, and the stainless steel balls will automatically roll outward. The male head is opened by the reaction force of the valve spring, at which point the valve automatically closes to block fluid flow. In the connected state, the male head is inserted into the female head, and the copper sleeve is pushed back to its previous position by its spring force, locking the steel balls, allowing fluid to flow; the O ring in the high-pressure water hose quick-connect fitting will prevent fluid from leaking out.

Leoni hose fitting functions

It connects the braided mesh sleeve to the entire bellows. At the same time, the fitting is also the component that connects the metal hose to other piping accessories and equipment. It ensures the normal operation of the medium in the pipeline system. The material of the fitting is usually the same as that of the bellows and braided mesh, mostly stainless steel. When transporting non-corrosive media, some larger-diameter metal hoses can be made of carbon steel. Metal hose fittings for corrosive media (if designed) take appropriate measures to avoid contact with the medium and can also be made of carbon steel. The structure of the fittings is roughly divided into three categories: screw type, flange type, and quick type: Under high working conditions, fittings for metal hoses (explosion-proof hoses) with a thread diameter less than 50 mm are mostly threaded. After tightening the threads, the inner and outer conical surfaces of the two fittings fit tightly to achieve sealing. The cone angle is usually 60 degrees, while 74 degrees is also useful. This structure has good sealing performance, but concentricity of the two mating parts must be ensured during installation. To solve the problems of repeated disassembly, assembly, and concentricity often encountered in actual projects, the fitting can also be designed to match a conical surface with a spherical head.

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