NELSON hose fittings Germany NELSON model NELSON price

NELSON hose fittings: In piping systems, elbows are pipe fittings that change the direction of the pipeline. Classified by angle, the three most common types are 45° and 90°180°. Additionally, other non-standard angle elbows such as 60° are included based on engineering requirements. Elbow materials include cast iron, stainless steel, alloy steel, malleable cast iron, carbon steel, non-ferrous metals, and plastics. Connection methods to pipes include: direct welding (the most common method), flange connection, hot melt connection, electrofusion connection, threaded connection, and socket connection. According to production processes, they can be divided into: welded elbows, stamped elbows, push-formed elbows, cast elbows, butt-welded elbows, etc. Other names: 90 degree elbow, right-angle elbow, etc.

NELSON hose fitting classification

1, DPJ type connection, also known as DPJ external thread end-type metal hose fitting, is an end-type fitting used to connect metal hoses to enclosures as a straight connector. 2, DKJ fitting, DKJ compression-type metal hose fitting, is a compression-type fitting used to connect metal hoses to seamless steel pipes without threads, eliminating the threading process; simply screw in the nut. 3, DGJ fitting, DGJ self-locking metal hose fitting, is a self-locking hose fitting used to connect metal hoses to seamless steel pipes or unthreaded equipment outlets, eliminating the threading process. 4, 90 degree elbow fitting, follows the imperial thread standard. The A, C, and F parts are made of high-quality steel, while the D part is die-cast from sheet metal. The color is silver-white metallic, and the operating temperature ranges from -40 degrees to 100 degrees. 5, Y shape fitting, Y shape three-way metal hose fitting, has one end connecting to thin-wall steel electrical conduit and the other two ends connecting to metal hoses via metal fittings. 6, T shape fitting, T shape three-way metal hose fitting, similar to the Y shape three-way metal hose fitting, has one end connecting to thin-wall steel electrical conduit and the other two ends connecting to metal hoses via metal fittings. 7, stainless steel fitting, the stainless steel hose fitting uses an end-type connection, cast from standard stainless steel, with a compact structure, high strength, and reliable connection to the hose.

NELSON hose fitting classification

Welded pipe fittings utilize a nipple welded to the pipe. An O ring seal provides face sealing between the fitting body and the nipple. 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. Operating pressure can reach 31.5MPa, operating temperature -25 to 80℃, suitable for piping systems using oil as the medium. Compression-type pipe fittings use the deformation of the ferrule to grip and seal the pipe. Advanced structure, good performance, lightweight, compact, easy to use, widely used in hydraulic systems. Operating pressure can reach 31.5MPa, requiring high pipe dimensional accuracy and cold-drawn steel pipes. High ferrule precision. Suitable for piping systems with oil, gas, and general corrosive media. Flared pipe fittings use the flared end of the pipe for sealing, requiring no other sealing elements. Simple structure, suitable for thin-wall pipe connections, applicable to low-pressure piping systems with oil or gas as the medium. Insert-welded pipe fittings involve inserting the pipe into the fitting until the pipe end contacts the inner end of the fitting, then welding the pipe and fitting into one unit. This eliminates the need for a nipple but requires strict pipe dimensions. Suitable for piping systems with oil or gas as the medium. Tapered seal welded pipe fittings have a nipple with an external tapered surface plus an O ring seal mating with the internal tapered surface of the fitting body, tightened with threads. Operating pressure can reach 16 to 31.5MPa, operating temperature -25 to 80℃, suitable for piping systems with oil as the medium. Crimped hose fittings are easy to install but add a crimping step. After hose damage, the outer sleeve cannot be reused. They form an assembly with wire-braided hoses. Can be used with welded pipe fittings sealed with O rings. Suitable for piping systems with oil, water, or gas as the medium. Medium temperature: Oil: -30 to 80℃; Air: -30 to 50℃; Water: below 80℃. Three-piece hose fittings do not require stripping the outer rubber layer of the hose during assembly. For hoses with slightly different outer diameters, compensation is achieved through the pre-compression of the hose by the outer sleeve. The pre-compression of the hose within the range of 31% to 50% ensures no leakage under working pressure, preventing pull-out and outer layer rupture. Can be connected with welded pipe fittings, quick-change fittings, and compression-type pipe fittings. Suitable for piping systems with oil, water, or gas as the medium. Working pressure and medium temperature are limited by the connected hose. Quick-change fittings (two-end shut-off): After disconnection, the pipes self-seal, preventing fluid loss, making them suitable for frequent disassembly. Complex structure with higher local resistance loss. Suitable for piping systems with oil or gas as the medium, working pressure below 31.5MPa, medium temperature -20 to 80℃. Quick-change fittings (two-end open): Suitable for piping systems with oil or gas as the medium, with working pressure and medium temperature limited by the connected hose.

NELSON hose fitting selection

Y shape three-way metal hose fitting: One end connects to thin-wall steel electrical conduit, and the other two ends connect to metal hoses via metal fittings. The metal fittings are die-cast from zinc alloy, with surfaces galvanized, sandblasted, or chrome-plated. Compact structure, no pores, high strength. Reliable connection to metal hoses, aesthetically pleasing. Custom non-standard metal hose fittings and special metal fittings are available. T shape three-way metal hose fitting: One end connects to thin-wall steel electrical conduit, and the other two ends connect to metal hoses via metal fittings. The metal fittings are die-cast from zinc alloy, with surfaces galvanized, sandblasted, or chrome-plated. Compact structure, no pores, high strength. Reliable connection to metal hoses, aesthetically pleasing. 90 degree elbow fitting: Thread specification: Imperial thread. After engagement, it forms a 90 degree angle with the enclosure. Made of thickened zinc alloy, aesthetically pleasing, compact structure, high strength. In addition to the standard specifications below, sizes and thread standards can be customized as needed.

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