ROSE & KRIEGE hose connectors, German ROSE & KRIEGE models, ROSE & KRIEGE prices

ROSE & KRIEGE hose connectors are components used to connect water pipes. Connectors can be classified by usage method into: external thread end-connecting water pipe connectors, compression-type water pipe connectors, and self-locking water pipe connectors. External thread end-connecting water pipe connectors are die-cast from zinc alloy, with surfaces galvanized, sandblasted, or chrome-plated; they feature a compact structure, no pores, and high strength. Compression-type water pipe connectors can connect unthreaded steel pipes to hoses, eliminating the threading process; simply screw in the fastener. They feature a compact structure and high strength. Water pipe connectors can connect unthreaded steel pipes or unthreaded equipment cable outlets to hoses, eliminating the threading process; they are die-cast from zinc alloy, with surfaces galvanized, sandblasted, or chrome-plated; they feature a compact structure and high strength. Widely used in high-end buildings, hotels, hospitals, office towers, stadiums, museums, government agencies, villas, and residential communities.

ROSE & KRIEGE hose connector classification

Compression tube fittings: The working principle of a compression fitting involves inserting the steel pipe into the ferrule and tightening it with the ferrule nut, causing the ferrule to bite into the pipe for sealing. No welding is required when connecting to steel pipes, which is beneficial for fire prevention, explosion protection, and high-altitude work, and eliminates drawbacks caused by improper welding. Therefore, it is a relatively advanced connector in pipeline systems for automatic control devices in oil refining, chemical, petroleum, natural gas, food, pharmaceutical, and instrumentation systems. Suitable for pipeline connections with media such as oil, gas, and water. Compression fittings feature reliable connection, high pressure resistance, temperature resistance, good sealing and repeatability, convenient installation and maintenance, and safe and reliable operation. Flared tube fittings: Flared tube fittings are suitable for media such as oil, water, and gas, whether non-corrosive or corrosive. The specifications for matching steel pipes are relatively flexible. After welding to the pipeline, they feature reliable connection and good sealing performance, and are therefore widely adopted in systems such as oil refining, chemical, light industry, textile, national defense, metallurgy, aviation, and shipbuilding; they are also suitable for hydraulic transmission pipelines in various mechanical engineering and machine tool equipment. Welded tube fittings: Welded tube fittings are suitable for media such as oil, water, and gas, whether non-corrosive or corrosive. For welded sealed tube fittings, the specifications for matching steel pipes are relatively flexible. After welding to the pipeline, they feature reliable connection and good sealing performance, and are therefore widely adopted in systems such as oil refining, chemical, light industry, textile, national defense, metallurgy, aviation, and shipbuilding; they are also suitable for hydraulic transmission pipelines in various mechanical engineering and machine tool equipment. When the production of compression tube fittings cannot meet requirements, or in highly corrosive environments, their use should be prioritized.

ROSE & KRIEGE hose connector precautions

Hoses must not be excessively bent during movement or when stationary, nor bent at the root; bending must start at least 1.5 times the diameter away; when the hose moves to an extreme position, it must not be pulled too tight and should remain relatively slack; avoid twisting deformation of the hose as much as possible; keep the hose as far away from heat-radiating components as possible, installing heat shields if necessary; avoid external damage to the hose, such as long-term friction against component surfaces during use; if the hose's own weight causes excessive deformation, supports should be provided.

ROSE & KRIEGE hose connector assembly

Pre-assembly is the most critical step for compression tube fittings, directly affecting sealing reliability. Specialized pre-assembly tools are generally required. Fittings with small pipe diameters can be pre-assembled on a bench vise. The specific method is to use one fitting body as the master, pressing the nut and ferrule onto the pipe. Main types include compression straight-through tube fittings, compression end-straight-through connectors, and compression tee tube fittings. It has been observed that even within the same batch from the same manufacturer, the depth of the tapered bore in these fitting bodies often varies, resulting in leaks, a problem that is often overlooked. The correct procedure is to pre-assemble the corresponding connection end with the same type of fitting as used on one end of the pipe, maximizing the avoidance of leakage issues. The pipe end face must be flat. After cutting the pipe, grind it flat on a grinding wheel or similar tool, remove burrs, clean, and blow dry with high-pressure air before use. ③ During pre-assembly, maintain coaxiality between the pipe and the fitting body as much as possible; excessive pipe misalignment will also cause sealing failure. Pre-assembly force should not be excessive; the inner edge of the ferrule should just embed into the outer wall of the pipe, and the ferrule should not show obvious deformation. During pipeline connection, assemble according to the specified tightening torque. The tightening torque for ф6-1 ferrules is 64-1 15n, for 16фmmr it is 259n, and for ф18mm it is 450n. If the ferrule deforms severely during pre-assembly, it will lose its sealing function. Do not add sealants or other fillers. Some apply sealant to the ferrule to achieve better sealing, but the sealant can be flushed into the hydraulic system, causing faults such as blockage of damping holes in hydraulic components. When connecting pipelines, ensure sufficient deformation allowance for the pipe to avoid subjecting it to tensile forces. When connecting pipelines, avoid subjecting them to lateral forces; excessive lateral force will cause poor sealing. When connecting pipelines, complete the connection in one go to avoid multiple disconnections, which will also degrade sealing performance.

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