Plumbing elbow 90° AKA Kolano 90º PE 20mm GZ 1/2" (AK A PE-57-120)

AKA Kolano 90º PE 20mm GZ 1/2" is a 90-degree plumbing elbow designed to join 20 mm polyethylene (PE) piping to a 1/2" male threaded metal fitting. Intended for changes of direction in water supply and heating installations, this compact right-angle fitting provides a transition between flexible PE pipe and threaded components while maintaining a stable flow path and a secure mechanical connection.

Advantages

The fitting combines a corrosion-resistant polyethylene connection with a durable metal threaded end to offer reliable mechanical strength where a threaded interface is required. Its 90-degree geometry creates a compact joint that reduces the need for additional pipe length and simplifies routing in confined spaces. The design supports standard plumbing thread engagement and provides consistent alignment between PE piping and threaded valves, meters or appliances.

Suitable for

• Domestic cold and hot water distribution systems
• Small-scale heating circuits and radiators
• Connections to threaded valves, faucets, meters and appliances
• Repairs and retrofits in limited-access or tight installation locations

Key specifications

• Connection to PE pipe: 20 mm diameter
• Threaded end: 1/2" male (metal)
• Angle: 90 degrees
• Materials: polyethylene connection body and metal threaded fitting
• Application: potable water and heating systems (residential and light commercial)

How to use

Prepare the PE pipe by cutting squarely and removing any burrs. Insert the PE pipe into the polyethylene socket end according to manufacturer guidance for the coupling method used (e.g., electrofusion, compression or push-fit, depending on product variant and system requirements). Apply appropriate thread sealing (such as PTFE tape or approved sealant) to the metal male thread and engage with the mating female threaded component. Tighten to the specified torque for metal thread fittings to ensure a secure, leak-free joint while avoiding over-tightening that could deform the PE connection or damage threads.

Usage recommendations

Verify compatibility of the elbow with the specific PE joining method and system pressure ratings before installation. Follow local plumbing codes and manufacturer instructions for thermal expansion allowance, support spacing and pressure testing. Use appropriate sealing materials on the threaded connection and check the assembled joint for leaks during initial system pressurization.