Watson-Marlow hose fittings Germany Watson-Marlow model Watson-Marlow price

Watson-Marlow hose fittings refer to threaded pipe connectors, which are the most common type of pipe fittings in industrial and daily applications. They are mainly used for small-diameter, low-pressure pipelines, for locations requiring frequent assembly and disassembly, or as final adjustments for pipelines using threaded fittings. The structural form should preferably adopt a metal-to-metal contact sealing structure. Gasket-sealed structures are typically used in general pipelines for transporting water, oil, air, etc., and are manufactured from malleable cast iron. The significance of threaded fittings is that they make pipe connections simpler and disassembly and replacement easier, greatly saving on pipeline connection costs. They are mainly used for small-diameter, low-pressure pipelines, for locations requiring frequent assembly and disassembly, or as final adjustments for pipelines using threaded fittings. Features of threaded fittings: high joint strength and good ductility, allowing full utilization of the strength and ductility of the base material. Connection is convenient, fast, and simple to operate. No electricity, gas, or open flame is required during construction and connection; there is no oil leakage or pollution. They are corrosion-resistant, leak-proof, anti-disconnection, safe, and have a long service life. Application areas: fluid and gas transmission systems in industries related to hydraulics, such as automotive, engineering machinery, lathes, machines, metallurgy, petroleum, mining, construction, chemical industry, shipbuilding, aerospace, military industry, textiles, marine, entertainment, electronics, etc.

Watson-Marlow hose fitting forming methods

Stamping forming of elbows was the earliest forming process applied to mass production of seamless elbows. In the production of common specification elbows, it has been replaced by hot pushing or other forming processes. However, for certain elbow specifications with low production volumes, excessively thick or thin walls, or special product requirements, it is still in use. Stamping forming of elbows uses pipe blanks with an outer diameter equal to that of the elbow, directly pressed into shape in a die using a press. Before stamping, the pipe blank is placed on the lower die, the inner mandrel and end die are inserted into the pipe blank, and the upper die moves downward to start pressing. The elbow is formed through the constraint of the outer die and the support of the inner die. Compared with the hot pushing process, the appearance quality of stamping forming is inferior. During the forming of stamped elbows, the outer arc is in a tensile state, with no excess metal from other parts for compensation, so the wall thickness at the outer arc is reduced by approximately 10%. However, due to its suitability for single-piece production and low cost, the stamping elbow process is mostly used for small-batch, thick-walled elbow manufacturing. Stamped elbows are divided into cold stamping and hot stamping; cold or hot stamping is usually selected based on material properties and equipment capabilities. The forming process of cold-extruded elbows uses a dedicated elbow forming machine. The pipe blank is placed in the outer die, and after the upper and lower dies close, the pipe blank moves through the gap reserved between the inner and outer dies under the push of a push rod to complete the forming process. Elbows manufactured using the inner and outer die cold extrusion process have a beautiful appearance, uniform wall thickness, and small dimensional deviations. Therefore, this process is mostly used for forming stainless steel elbows, especially thin-walled stainless steel elbows. This process requires high precision for the inner and outer dies and has strict requirements for the wall thickness deviation of the pipe blanks. Medium plate welding involves using a press to form half of the elbow profile from medium plates, and then welding the two profiles together. This process is generally used to manufacture elbows above DN700.

Watson-Marlow hose fitting structure

Connects unthreaded steel pipes or unthreaded equipment cable outlets to hoses, eliminating the need for threading; metal fittings are die-cast from zinc alloy, with surfaces galvanized, sandblasted, or chrome-plated; compact structure and high strength. Reliable connection between steel pipes and metal hoses, with an attractive appearance; This metal fitting is self-locking, used to connect metal hoses to unthreaded steel pipes or unthreaded equipment cable outlets; compatible metal hoses: compatible steel pipes: thin-wall electrical conduits, black and white iron pipes; when selecting self-locking metal hose fittings, please note the specifications and dimensions of the connected steel pipes and hoses. 90 degree fitting 90 degree elbow fitting: Thread specification: Imperial thread Product materials: A, C, F parts are all made of high-quality steel. D is made of die-cast sheet metal. Color types: Metallic (silver-white) Operating temperature: -40 degrees to 100 degrees, instant heat resistance up to 120 degrees. Product features: Forms a 90 degree angle with the enclosure after connection, thickened zinc alloy, attractive appearance, compact structure, high strength.

Watson-Marlow hose fitting precautions

1. Before cleaning pipes with acidic detergents, residual welding slag, stains, varnish, and other substances must be cleaned off to prevent chemical reactions that could cause unnecessary damage to the pipes and affect future use. 2. To ensure the normal use of hose fittings, they must be specially protected. Whether during transportation, disassembly, or pickling, it is crucial not to damage threads, pipelines, and sealing surfaces. The best method is to seal them with tape. 3. For all threaded parts of the hose fittings, strong acid-resistant plastic tape or rubber tape should be used for protection. Alternatively, after direct water washing, apply dry oil to the threaded positions, and once completely dry, immerse in acid solution to remove rust spots. 4. During the pipe cleaning process, special attention must be paid to the markings on the pipes to protect their integrity as much as possible. Furthermore, all welding tasks must be completed before pickling. In daily use, necessary protection measures for the hoses should also be observed.

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