FKB hose connectors Germany FKB models FKB prices

FKB hose connectors are high-quality flexible pipelines in modern industrial piping 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 outer braided mesh of 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 pipeline. The bellows of the hose are formed by high-precision plastic processing of extremely thin-walled seamless or welded stainless steel pipes. Due to the elastic characteristics of the bellows profile, the hose has good flexibility and fatigue resistance, making it easy to absorb cyclic loads from various motion deformations, especially having the ability to compensate for large displacements in piping systems. Media visualization (media visible), process automation.

FKB hose connector installation

Since the vibration direction of the equipment is mainly vertical up-and-down vibration, the metal hose mainly compensates for its axial displacement. We know that the metal hose itself cannot compensate for axial displacement in its natural state. Such installation and usage will inevitably result in the metal hose being unable to withstand strong axial tension, leading to rupture and thus pipeline leakage. During installation, relative twisting occurs at both ends of the metal hose. This mainly appears when both ends of the metal hose are connected with flanges. At the ship installation site, due to installation errors, the flange holes at the two connected ends often fail to align, causing offset. It is mistakenly assumed that the hose connector can compensate for torsional displacement, but in fact, the metal hose itself cannot compensate for this torsional displacement. The result is that the metal hose is twisted off, causing pipeline leakage. In this case, a metal hose with a loose flange connection at one end can be selected for connection. During installation, there is a large radial offset between the two ends of the metal hose. Although the metal hose itself can compensate for lateral displacement, if there is a large relative radial displacement between its two ends during installation, the actual compensable amount in that direction will be reduced. This may cause the required compensation in that direction during use to exceed the actual compensable amount of the hose in that direction, thereby causing fatigue damage and failure of the metal hose.

FKB hose connector manufacturing process

The forming of tee fittings involves flattening a pipe blank larger than the tee diameter to approximately the size of the tee diameter, and opening a hole at the branch pipe stretching position; the pipe blank is heated, placed into a forming mold, and a punch for stretching the branch pipe is inserted inside the pipe blank; under pressure, the pipe blank is radially compressed, and during the radial compression process, metal flows towards the branch pipe direction and forms the branch pipe under the stretching of the punch. The entire process is formed through the radial compression of the pipe blank and the stretching process of the branch pipe part. Different from hydraulic bulging tees, the metal of the tee fitting branch pipe is compensated by the radial movement of the pipe blank, so it is also called the radial compensation process. Since hot pressing is used for tees, the equipment tonnage required for material forming is reduced. Hot-pressed tees have wide adaptability to materials, suitable for low-carbon steel, alloy steel, and stainless steel materials; especially for large-diameter tees with thicker walls, this forming process is usually adopted.

FKB hose connector usage

Metal hose three-column connectors are generally used to connect low-pressure air pipelines such as air conditioners, heaters, humidifiers, and exhaust fans. They are a universal type of connector, easy to install and very stable in structure, widely used in home air conditioners, heating systems, household humidifiers, exhaust fans, and other home air pipeline connections. Metal hose three-column connectors can be applied to various indoor air conditioners, heaters, humidifiers, etc., for vertical or horizontal air pipelines. They can connect air conditioner pipes of different diameters and can be used for connecting home air pipelines in indoor air conditioning systems, heating systems, household humidifiers, exhaust fans, etc. Metal hose three-column connectors can be used for the installation of various indoor air conditioning systems in industrial plants, shopping malls, office buildings, residences, etc., connecting air conditioner pipes together to make the installation of air conditioning systems more convenient. Metal hose three-column connectors can also be applied to the connection of car air conditioning systems, car humidifiers, car exhaust fans, and other automotive air pipelines, connecting car air conditioning pipes together to make the installation of car air conditioning systems more convenient. In short, metal hose three-column connectors can be widely used in the connection of home air pipelines such as home air conditioners, heating systems, household humidifiers, exhaust fans, etc., and can also be used for the connection of automotive air pipelines such as car air conditioning systems, car humidifiers, car exhaust fans, etc., making installation more convenient.

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