Heraeus hose fittings Germany Heraeus model Heraeus price

Heraeus 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, depending on engineering requirements, other non-standard angle elbows such as 60° are included. 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, heat fusion 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-weld elbows, etc. Other names: 90 degree elbow, right-angle elbow, etc.

Heraeus hose fitting classification

Inert gas type, mainly used for vacuum piping and compressor pressure resistance tests. Both the sleeve and plug have built-in automatic shut-off valves suitable for vacuum applications; a vacuum level of 1.3×10Pa can be maintained in the disconnected state. Precautions for use: Do not exceed the maximum operating pressure limit during use. Do not use outside the specified temperature range to prevent wear or leakage of sealing materials. Do not subject to artificial impact, bending, or stretching to prevent damage. Do not connect or disconnect under pressure or residual pressure. Do not disassemble. Use sealant for tapered pipe threads on external threads. Do not subject to artificial impact, bending, or stretching to prevent damage. Do not use with fluids other than the applicable fluid. Do not use for purposes other than quick couplings. Do not connect with quick fluid couplings from other manufacturers. Do not use in environments contaminated with metal powder or sand/dust to prevent malfunction or leakage. Attachment of debris will cause malfunction or leakage. A brake valve must be installed before the quick coupling. Do not use as a hinged joint. Use in machines with vibration or shock will reduce durability. Cold water and warm oil type, mainly used for general-purpose mold interfaces. Fully simplifies mold exchange operations, enhances rust prevention, and offers diverse varieties. Precautions for use: Note, do not use with fluids other than the applicable fluid. Do not exceed the maximum operating pressure limit during use. Do not use outside the specified temperature range to prevent wear or leakage of sealing materials. Do not subject to artificial impact, bending, or stretching to prevent damage. Do not use in environments contaminated with metal powder or sand/dust to prevent malfunction or leakage. For threaded installations, do not exceed the maximum tightening torque during installation to prevent damage. Do not use hoses with cracks to prevent leakage or detachment. Use in machines with vibration or shock will reduce durability. The working fluid must be clean fluid filtered through a filter. Do not disassemble the quick coupling. Semiconductor type, mainly used for semiconductor and fluororesin semiconductor production equipment and devices. The body material should be corrosion-resistant metal or all-resin products made of molded fluororesin (PFA). Precautions for use: Note, perform a leaching test of the sealing material with the fluid to confirm material suitability. Use Teflon sealing tape for external tapered pipe threads. Do not exceed the maximum tightening torque when installing threads to prevent damage. To reduce friction (insertion load) and protect the "O" ring seal during insertion, apply the working fluid or pure water to the "O" ring seal or the quick coupling (folded part of the "O" ring seal). During separation, since a small amount of fluid flows out, use compressed air to discharge the fluid inside the quick coupling before separation to prevent hazards. Do not use as a hinged joint. Do not use for purposes other than quick fluid couplings. Do not subject to artificial impact, bending, or stretching to prevent damage. Do not pressurize when using the sleeve or quick coupling alone to prevent the valve from flying out. When used alone, the specified dust cap must be installed. Do not disassemble the quick coupling.

Heraeus hose fitting forming methods

Stamping forming is 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 specifications with low production volume, excessive wall thickness, or thin walls, and when products have special requirements, it is still in use. Stamping forming of elbows uses pipe blanks with an outer diameter equal to that of the elbow, and a press is used to directly form them in a mold. 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, and there is 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 stamped elbow process is mostly used for the manufacture of small-batch, thick-walled elbows. Stamped elbows are divided into cold stamping and hot stamping; cold stamping 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 along the gap reserved between the inner and outer dies under the push of the 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: Use a press to make half of the elbow profile from medium plates, and then weld the two profiles together. This process is generally used to manufacture elbows above DN700.

Heraeus hose fitting usage

How to ensure sealing in the connection between hose fittings and hoses? The connection between hose fittings and hoses is simple, but ensuring the seal is critical. So, how is the seal achieved in the connection between hose fittings and hoses? Generally speaking, regardless of the variety of hose fittings, the appropriate transition fitting should be selected based on the type of hose fitting. If the hose is a standard water hose, use a transition fitting with one female thread end and one end for inserting into the water hose, then secure with a hose clamp. If both ends of the hose have female threads, use a transition fitting with one female thread end and one male thread end. If both ends of the hose have male threads, use a straight-through female thread connector as the transition fitting. General hydraulic quick-change couplings must withstand high pressure, so in most cases, high-pressure oil hoses are used. Both ends of the oil hose are usually made with female threads, so they can be connected directly. As for hydraulic fittings, no other rubber rings are needed for sealing; the product itself has one concave end and one convex end, allowing for a complete seal upon connection.

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