SCHLEMMER hose connector Germany SCHLEMMER model SCHLEMMER price

SCHLEMMER hose connector In piping systems, an elbow is a pipe fitting used to change the direction of the pipeline. Classified by angle, the three most common types are 45° and 90°180°. Additionally, according to 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 classified into: welded elbows, stamped elbows, push-formed elbows, cast elbows, butt-weld elbows, etc. Other names: 90 degree elbow, right-angle elbow, etc.

SCHLEMMER hose connector applications

Quick connectors are also commonly referred to as self-locking connectors or quick-insert sealing connectors. They allow securing pipe fittings and connectors through simple operation, without the need for nuts or clamps. They can withstand high pressures, 70Bar or even higher. For cooling water channels with flanged ports or straight round pipes, standard connectors require tightening with clamps, involving multiple steps and offering limited pressure resistance. With technological advancements, in addition to self-locking quick connectors, pneumatic quick connectors (automation quick connectors) are better suited for industrial automated production, utilizing pneumatic drive. The purpose of using quick connectors is to achieve faster operations; modern mechanized production emphasizes efficiency and reducing operator workload. Their speed is reflected in: easy handling, fewer operational steps, simple operation, automatic locking, and sealing/disconnection requiring only one insertion and one pull, which is much more convenient than standard connectors.

SCHLEMMER hose connector assembly

Pre-assembly is the most critical step for bite-type pipe 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 involves using one fitting body as the base, pressing the nut and biting ring onto the pipe. Main types include bite-type straight pipe fittings, bite-type end straight-through fittings, and bite-type tee fittings. It has been observed that even within the same batch from the same manufacturer, the depth of the tapered hole in these fitting bodies often varies, resulting in leaks, a problem that is frequently overlooked. The correct practice is to pre-assemble the corresponding connection end with the same type of fitting as the one connecting to one end of the pipe, thereby minimizing the risk of leakage. The pipe end face should be flat. After cutting, the pipe should be ground flat on tools such as a grinding wheel, deburred, cleaned, and blown 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 deviation will cause sealing failure. Pre-assembly force should not be excessive; the inner edge of the biting ring should just embed into the outer wall of the pipe, and the biting ring should not show obvious deformation. During pipeline connection, assemble according to the specified tightening torque. The tightening torque for ф6-1 biting ring is 64-1 15n, for 16фmmr is 259n, and for ф18mm is 450n. If the biting ring deforms severely during pre-assembly, it will lose its sealing function. Do not add sealants or other fillers. Some users apply sealant to the biting ring to achieve better sealing, but the sealant can be flushed into the hydraulic system, causing failures such as blockage of damping holes in hydraulic components. When connecting pipelines, ensure sufficient deformation allowance for the pipe to avoid tensile stress. Avoid lateral forces during connection, as excessive lateral force can cause poor sealing. Complete the connection in one go; avoid multiple disconnections, as this will degrade sealing performance.

SCHLEMMER hose connector manufacturing process

It includes a sealing ring, a connection part, and a union nut for connecting the pipe. Therefore, the sealing ring is designed as a ring cutter with one or more cutting edges. By screwing the union nut onto the connection part, the ring cutter can be inserted into the cavity of the connection part, which has a conical surface. The outside of the sealing ring has an annular reinforcement on the nut side. This annular reinforcement forms an annular surface at the transition zone towards the narrow ring section. The inclination of said annular surface formed by the reinforced part of the ring cutter relative to the pipe axis is 45°-90°. When fully assembled, the axial length of the annular reinforcement allows a transfer element arranged on said annular surface to transfer its own negative image structure or itself onto the end face of the connection part. The transfer element has a three-dimensional profile, the negative image of which can be transferred onto the surface of the connection part. Similar to die stamping, the assembler applies pressure to imprint the negative image onto the surface of the connection part.

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