EMHART hose connector Germany EMHART model EMHART price

EMHART hose connectors are components used to connect hoses to other hoses or components. Hoses include stainless steel hoses, metal hoses, corrugated hoses, rubber hoses, plastic hoses, and other types; hose connectors vary by hose type. Materials for metal hose connectors mainly include stainless steel, nickel-plated copper, and zinc alloy. Shapes mainly include external thread end connectors, external thread 45-degree elbows, external thread 90-degree elbows, internal thread connectors, self-locking connectors, and compression ring connectors, among others. Metal hose connectors can be selected based on installation conditions and operating environment.

EMHART hose connector applications

Elbows are commonly used pipe fittings in plumbing installations, used at pipe bends to change the direction of the pipeline. Other names: 90° elbow, right-angle elbow, air elbow, stamped elbow, pressed elbow, machined elbow, welded elbow, etc. Applications: Connect two pipes with the same or different nominal diameters to allow the pipeline to make 90°, 45°, 180°, and turns of various angles. A bend with a bending radius less than or equal to 1.5 times the pipe diameter is classified as an elbow; greater than 1.5 times the pipe diameter is classified as a bend. It is a commonly used connecting pipe fitting in pipeline installation, connecting two pipes with the same or different nominal diameters to allow the pipeline to turn at a certain angle, with a nominal pressure of 1-1.6Mpa.

EMHART hose connector 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 In the production of common specification elbows, it has been replaced by hot pushing or other forming processes.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, it is still used for certain elbow specifications where production quantities are small, wall thickness is excessively thick or thin, or products have special requirements. Stamping forming of elbows uses a pipe blank with an outer diameter equal to that of the elbow, which is directly pressed into shape in a die using a press. Before stamping, the pipe blank is placed on the lower die, and the inner mandrel and end die are inserted into the blank. The upper die moves downward to begin pressing, and 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 surface quality of stamping forming is inferior. During the forming of stamped elbows, the outer arc is in a stretched state, with no excess metal from other areas to compensate, 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 stamped elbow process is often 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 cold extrusion forming process for 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 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 an attractive 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 blank. Medium plate welding involves using a press to form half of the elbow profile from medium plate, then welding the two profiles together. This process is generally used to manufacture elbows above DN700.

EMHART hose connector selection

Corresponding to their applications, there is a rich variety of body materials, sizes, and installation shapes. Quick connectors for gas are mainly used for general fuse piping and feature high flow rate, durability, and corrosion resistance. Body materials, sizes, and installation shapes are diverse. Quick connectors for gas and liquid shared use are mainly used for ion cooling device piping, brewing equipment, machine tool cutting oil piping, and car wash machines. They can transport liquids, gases, powders, etc., through simple lever operation. Body materials, sizes, and installation shapes are diverse. Quick connectors for hydraulic pressure are mainly used for hydraulic devices and construction machinery. The body material should be metal capable of resisting vibration and impact. Quick connectors for inert gases are mainly used for vacuum piping and compressor pressure tests. Both the sleeve and plug have built-in automatic shut-off valves suitable for vacuum applications, maintaining a vacuum degree of 1 to 3 × 10Pa in the separated state. Quick connectors for cooling water and warm oil are mainly used for general-purpose mold interfaces. They thoroughly simplify mold exchange operations, enhance rust prevention, and come in various types.

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