Alkotest KN9025 90° Elbow Pipe Connector Ø25 mm (PP) – plumbing fitting

Alkotest KN9025 is a 90° elbow pipe connector for Ø25 mm plastic piping, manufactured from polypropylene (PP). The fitting provides a reliable right-angle change of direction in plumbing runs where PP systems are used. It is intended for potable water, wastewater, and drainage lines in residential and light-commercial installations where compatibility with PP components is required. The compact connector supports straightforward integration into existing PP piping layouts and repair jobs.

Advantages

This PP elbow offers chemical resistance typical of polypropylene, low weight for easier handling, and dimensional stability that helps maintain alignment in pipe assemblies. Its smooth inner surface minimises flow resistance and buildup, while the standard 90° geometry ensures predictable hydraulic behaviour. The connector is corrosion-resistant and does not require additional coatings, which simplifies long-term maintenance.

Suitable for

• Potable water distribution in PP piping systems
• Drainage and wastewater lines in residential buildings
• Repair and replacement of damaged Ø25 mm plastic pipes
• Light commercial plumbing applications compatible with polypropylene fittings

Key specifications

• Angle: 90 degrees for right-angle changes in direction
• Material: polypropylene (PP) providing chemical and corrosion resistance
• Nominal pipe diameter: 25 mm internal diameter compatibility
• Connection type: push-fit or solvent-weld depending on system compatibility (verify before installation)
• Application: suitable for cold and ambient temperature water and drainage systems where PP is specified

How to use

Select the elbow compatible with Ø25 mm PP pipe and confirm the connection method required by your piping system. Prepare pipe ends by cutting squarely and deburring to ensure full engagement. For push-fit systems, insert the pipe until it reaches the stop; for solvent-weld or adhesive systems, apply appropriate PP-compatible primer and adhesive following manufacturer instructions and allow the joint to cure before pressurising. Ensure correct alignment at 90° before the joint sets and test the assembly for leaks at operating pressure.

Usage recommendations

Store the polypropylene elbow away from prolonged direct sunlight and extreme temperatures. When used in potable water systems, follow local regulations and testing procedures. Do not expose the fitting to solvents or chemicals not compatible with PP. For installations with thermal expansion concerns or high-pressure systems, consider supports, clamps, or alternative fittings rated for those conditions.