Alkotest K9020 KOLANKO 90 FI20 pipe elbow, polypropylene (PP), model K9020

Alkotest K9020 KOLANKO 90 FI20 is a 90-degree pipe elbow manufactured from polypropylene (PP) for FI20 piping. The fitting provides a compact right-angle connection for pipes with a nominal 20 mm diameter and is intended for use in drainage, plumbing and fluid conveyance systems where chemical resistance and corrosion-free joints are required. Its smooth internal surface supports consistent flow while the polypropylene construction offers low weight and resistance to many common chemicals used in residential and light commercial installations.

Advantages

The polypropylene body ensures long-term resistance to corrosion and many aggressive liquids, reducing the risk of degradation compared with metal alternatives. The 90-degree geometry creates a compact and space-saving directional change for FI20 pipe runs. Low weight and simple geometry make handling and installation easier, while the smooth bore minimizes flow losses and debris accumulation. Durable material properties also support reliable performance in installations exposed to moisture and typical household chemicals.

Suitable for

• Residential drainage and plumbing systems with 20 mm nominal pipes
• Light commercial installations requiring corrosion-resistant fittings
• Applications where compact, right-angle directional changes are needed
• Systems transporting chemically compatible liquids where PP is suitable

Key specifications

• Material: polypropylene (PP)
• Angle: 90 degrees
• Nominal diameter compatibility: 20 mm (FI20)
• Connection type: push-fit / slip-fit for FI20 piping (compatible with standard FI20 joints)
• Surface: smooth internal bore to limit flow resistance
• Typical applications: drainage, plumbing, low-pressure fluid conveyance

How to use

Before installation, verify that the pipe and fitting sizes match the FI20 standard and inspect both components for damage or contamination. Prepare the pipe end by cutting squarely and deburring to ensure a clean fit. Insert the pipe into the elbow until a secure seating is achieved according to the chosen joint method (push-fit, solvent or adhesive where applicable). Ensure alignment at the required 90-degree orientation and test the assembled run for leaks at acceptable operating pressures for polypropylene systems. Follow local plumbing codes and manufacturer recommendations for joining techniques and support spacing.

Usage recommendations

Use this PP elbow in environments compatible with polypropylene chemistry; avoid exposure to solvents or temperatures beyond PP's recommended service limits. For pressurized or critical systems verify compatibility with adhesives or sealing methods and perform pressure testing after installation. Store fittings in a dry, shaded place to prevent unnecessary UV exposure prior to installation.