Transfluid hose fittings Germany Transfluid model Transfluid price

Transfluid hose fittings are connection tools between pipes, serving as detachable connection points between components and pipes. Main pipe fittings come in a wide variety; commonly used pipe fittings can generally be divided into two types: rigid pipe fittings and hose fittings. Rigid pipe fittings include flared type, compression type, and welded type. Hose fittings are mainly crimped rubber hose fittings. Compression-type pipe fittings consist of three parts: the fitting body, the ferrule, and the nut. When the ferrule and nut are placed on the steel pipe and inserted into the fitting body, tightening the nut causes the outer side of the ferrule's front end to fit against the conical surface of the fitting body, while the inner cutting edge evenly bites into the seamless steel pipe, forming an effective seal. These are sealed pipe fittings suitable for non-corrosive or corrosive media such as oil, water, and gas. The specifications for use with aluminum-plastic composite pipes are relatively flexible. After connection to the pipeline, they feature reliable connections and good sealing performance.

Transfluid hose fitting prevention

In hydraulic systems, both metal pipe fittings and hose fittings are prone to leakage. For compression-type pipe fittings, leakage is mostly caused by significant external forces or impacts on the pipeline, which loosen the ferrule or deform the pipe end. In such cases, check whether the ferrule is out of round, whether the cutting edge is damaged, whether the pipe end is intact, and the tightness of the ferrule nut, while also eliminating external forces on the pipeline. For flared-type pipe fittings, leakage is mostly caused by excessive flaring, non-compliance with quality requirements, or repeated disassembly, leading to deformation or cracks in the flare. In this case, the front end can be cut off and re-flared. If male and female conical tops are used for sealing, leakage is mostly due to damage to the two conical surfaces, which can be ground using abrasive sand. In applications where 'O' rings seal against the face or outer diameter, causes of leakage include: leakage due to aging or deformation of the 'O' ring; leakage due to improper assembly of the 'O' ring, causing uneven pressure when the two planes are connected or cutting of the 'O' ring; leakage due to insufficient compression of the 'O' ring, resulting in inadequate elastic deformation; and leakage due to the retaining groove for the 'O' ring being too deep. To address this, select an 'O' ring with the same outer diameter but a thicker cross-section, or machine (cut or grind) the sealing surface with the retaining groove to reduce its depth, ensuring sufficient elastic deformation of the 'O' ring (compression should generally be between 0.35-0.65mm). For leaks at pipe fittings using oil-resistant rubber sheets, wool felt, soft steel paper, combined sealing gaskets, or sealants, regardless of material, first inspect the seals for damage, deformation, aging, or excessive roughness, and then take appropriate measures.

Transfluid hose fitting installation

Installation is the most critical step, 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 involves using a fitting body as the master, pressing the nut and ferrule onto the pipe. The main types include compression straight-through pipe fittings, compression end-straight pipe fittings, and compression tee pipe fittings. The depth of the conical hole in these fitting bodies often varies. As a result, if a pipe pre-assembled on a straight-through fitting body is used for connection to a tee fitting body, the spherical contact formed between the ferrule and the inner conical surface of the fitting body may not be tight, causing leakage. This issue is often overlooked. The correct approach is to pre-assemble the corresponding connection end with the same type of fitting as used on one end of the pipe. This maximizes the avoidance of leakage problems. Maintain coaxiality between the pipe and the fitting body as much as possible; excessive deviation of the pipe will also cause seal failure. Pre-assembly force should not be too high. The inner cutting edge of the ferrule should just embed into the outer wall of the pipe, and the ferrule should not show obvious deformation. Severe deformation of the ferrule during pre-assembly will result in loss of sealing function.

Transfluid hose fitting installation

Installation is the most critical step, 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 involves using a fitting body as the master, pressing the nut and ferrule onto the pipe. The main types include compression straight-through pipe fittings, compression end-straight pipe fittings, and compression tee pipe fittings. The depth of the conical hole in these fitting bodies often varies. As a result, if a pipe pre-assembled on a straight-through fitting body is used for connection to a tee fitting body, the spherical contact formed between the ferrule and the inner conical surface of the fitting body may not be tight, causing leakage. This issue is often overlooked. The correct approach is to pre-assemble the corresponding connection end with the same type of fitting as used on one end of the pipe. This maximizes the avoidance of leakage problems. Maintain coaxiality between the pipe and the fitting body as much as possible; excessive deviation of the pipe will also cause seal failure. Pre-assembly force should not be too high. The inner cutting edge of the ferrule should just embed into the outer wall of the pipe, and the ferrule should not show obvious deformation. Severe deformation of the ferrule during pre-assembly will result in loss of sealing function.

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