Elbow fitting SiGMA-Li KN4525 45° PP 25 mm for plumbing/drainage

SiGMA-Li KN4525 45° elbow fitting is a plumbing component made of polypropylene (PP) with a nominal diameter of 25 mm, designed for drainage and sanitary installations. The fitting provides a 45-degree change of direction in piping runs and is intended to connect compatible PP pipes and fittings in residential and light commercial systems where gentle directional adjustment is required.

Advantages

The polypropylene construction offers chemical resistance and low weight, making handling and installation straightforward. The 45° angle reduces hydraulic resistance compared with multiple sharper turns, supporting smoother flow in drainage lines. The compact 25 mm size is compatible with standard small-diameter sanitary piping and allows a discreet installation in confined spaces.

Suitable for

• Residential drainage and sanitary pipework
• Light commercial plumbing installations
• Repair or modification of existing PP piping systems
• Areas requiring a 45° directional change in small-diameter lines

Key specifications

• Material: polypropylene (PP)
• Angle: 45°
• Nominal diameter: 25 mm
• Application: drainage and sanitary systems
• Connection type: compatible with PP pipe fittings

How to use

Prepare compatible PP pipe ends by cutting square and deburring. Ensure mating surfaces are clean and dry before assembly. Fit the elbow to the pipe according to the manufacturer’s recommended joining method for PP components (such as solvent welding, socket fusion, or appropriate mechanical connection specified for the pipe system). Verify alignment to maintain a smooth 45° run and support adjacent pipe sections to avoid stress on the joint.

Usage recommendations

Use the elbow in systems designed for PP fittings and follow local plumbing codes. Avoid exposing the fitting to temperatures and chemicals beyond PP material limits. Support piping at regular intervals and inspect joints after assembly to ensure leak-free performance.