Flueight hose fittings Germany Flueight model Flueight price

Flueight hose fittings are straight-through connectors used for linear connections such as instruments. Connection methods include socket welding or threaded connection. They are mainly used for small-diameter low-pressure pipelines, for parts that require frequent assembly and disassembly, or for final adjustment of pipelines using threaded fittings. Relevant products are all listed by Kuaiyiyou. The structural form should preferably adopt a metal face contact seal structure. Gasket seal structures are generally used in general pipelines transporting water, oil, air, etc., and are made of malleable cast iron. In addition, application requirements and quotation are also factors to consider when selecting. Hose straight-through connectors have a wide variety of types. Commonly used hose straight-through connectors can generally be divided into hard hose straight-through connectors and soft hose straight-through connectors. If classified according to the connection method between the hose straight-through connector and the pipeline, hard hose straight-through connectors have three types: flared type, ferrule type, and welded type. Soft hose straight-through connectors are mainly crimped rubber hose straight-through connectors. The connection methods between pipelines and hose straight-through connectors in hydraulic systems also differ. The pipe insertion end uses connecting threads. Tapered threads rely on their own tapered body tightening and use materials such as polytetrafluoroethylene for sealing operations, and are mainly used in medium and low-pressure hydraulic systems.

Flueight hose fitting classification

1, DPJ type, also called DPJ external thread end connection metal hose fitting, is an end-connection type used to connect metal hoses to enclosures as a linear connector. 2, DKJ fitting, DKJ ferrule-type metal hose fitting, is a ferrule type used to connect metal hoses to seamless steel pipes without threads. It can connect seamless steel pipes to hoses, eliminating the threading process; simply screw in the screw. 3, DGJ fitting, DGJ self-fixing metal hose fitting, is a self-fixing hose fitting used to connect metal hoses to seamless steel pipes or equipment outlets without threads, eliminating the threading process. 4, 90 degree elbow fitting, follows the imperial thread standard. A, C, F parts are made of high-quality steel, and the D part is made of die-cast sheet metal. The color is silver-white metallic, and the operating temperature is between -40 degrees and 100 degrees. 5, Y shape fitting, Y shape tee metal hose fitting, its form is one end connector connecting to thin-wall steel electrical conduit, and the other two ends metal connectors connecting to metal hoses. 6, T shape fitting, T shape tee metal hose fitting, same as the Y shape tee metal hose fitting, its form is one end connector connecting to thin-wall steel electrical conduit, and the other two ends metal connectors connecting to metal hoses. 7, stainless steel fitting, stainless steel hose fittings adopt end-connection type, cast from standard stainless steel, with compact structure, high strength, and reliable connection with hoses.

Flueight hose fitting classification

Welded pipe fittings, utilizing welding between the adapter and the pipe. An O ring seal provides face sealing between the fitting body and the adapter. Simple structure, easy to manufacture, good sealing performance, and low requirements for pipe dimensional accuracy. High welding quality is required, and assembly/disassembly is inconvenient. Working pressure can reach 31.5MPa, working temperature -25～80℃, suitable for pipeline systems with oil as the medium. Ferrule pipe fittings, utilizing ferrule deformation to grip the pipe and seal. Advanced structure, good performance, light weight, small volume, convenient to use, widely used in hydraulic systems. Working pressure can reach 31.5MPa, requires high pipe dimensional accuracy, and cold-drawn steel pipes must be used. Ferrule precision is also high. Suitable for pipeline systems with oil, gas, and general corrosive media as the medium. Flared pipe fittings, utilizing pipe end flaring for sealing, no other sealing elements required. Simple structure, suitable for thin-wall pipe connections, suitable for low-pressure pipeline systems with oil and gas as the medium. Insertion welded pipe fittings, insert the pipe of required length into the pipe fitting until the pipe end contacts the inner end of the pipe fitting, weld the pipe and pipe fitting into one unit, eliminating the need for an adapter, but strict pipe dimensions are required. Suitable for pipeline systems with oil and gas as the medium. Taper seal welded pipe fittings, one end of the adapter has an outer cone surface plus an O ring seal matching the inner cone surface of the fitting body, tightened with threads. Working pressure can reach 16～31.5MPa, working temperature －25～80℃, suitable for pipeline systems with oil as the medium. Crimped rubber hose fittings, convenient installation, but adds a tightening process. After the hose is damaged, the fitting outer sleeve cannot be reused. It forms an assembly with wire-braided rubber hoses. It can be used in connection with welded pipe fittings with O ring seals. Suitable for pipeline systems with oil, water, and gas as the medium. Medium temperature: Oil: -30～80℃; Air, -30～50℃; Water, below 80℃. Three-piece rubber hose fittings, no need to strip the outer rubber layer of the hose during assembly. For hoses with slightly different outer diameters, compensation is achieved by the pre-compression amount of the fitting outer sleeve on the hose. The pre-compression amount of the hose in the range of 31%～50% can ensure no leakage under working pressure, no hose pull-out, and no rupture of the outer rubber layer. It can be used in connection with welded pipe fittings, quick-change fittings, and ferrule pipe fittings. Suitable for pipeline systems with oil, water, and gas as the medium. Its working pressure and medium temperature are limited by the connected rubber hose. Quick-change fittings (two-end shut-off type), after the pipe is disconnected, it can self-seal, and the liquid in the pipeline will not be lost, so it is suitable for occasions requiring frequent disassembly. The structure is relatively complex, and local resistance loss is large. Suitable for pipeline systems with oil and gas as the medium, working pressure below 31.5MPa, medium temperature -20～80℃. Quick-change fittings (two-end open type), suitable for pipeline systems with oil and gas as the medium, and its working pressure and medium temperature are limited by the connected rubber hose.

Flueight hose fitting selection

Chemical equipment pipelines usually transport various corrosive fluids and require frequent flushing with solvents or water. When considering media corrosion, the relationship between pipeline seals and the media should be primarily considered. Nitrile rubber is widely used in hydraulic systems because it is compatible with common hydraulic oils. At certain temperatures, nitrile rubber is also compatible with synthetic acetaldehyde, glycol-based chemical liquids, and plant-extracted liquids. However, nitrile rubber is not suitable for contact with acidic media, benzene, or synthetic oils at high temperatures; fluororubber should be used in these cases. Conversely, methane and refrigerant ammonia are only compatible with nitrile rubber. Therefore, most chemical stainless steel pipelines use rigid seals. When selecting pipe fittings, the maximum working pressure of each fitting must be at least equal to the maximum set working pressure of the entire hydraulic system. Not only the pump outlet pressure but also the relief valve activation pressure must be considered. The maximum working pressure of hydraulic pipe fittings may vary depending on the sealing method or temperature changes: similarly, selecting elastic seals for fittings will yield higher working pressures than rigid seals.

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