Elbow 45° Ø40mm pipe fitting SiGMA-Li K4540

SiGMA-Li K4540 is a 45° elbow pipe fitting with a 40 mm outer diameter, designed to provide a compact and reliable directional change in piping systems. The fitting is intended for use where a 45-degree turn is required and enables smooth connection between pipe sections with a 40 mm interface. It is suitable for plumbing runs, drainage lines and HVAC ductwork that use 40 mm piping.

Advantages

The elbow offers a consistent 45° angle to simplify routing in confined spaces and reduce the need for multiple fittings. Its Ø40 mm dimension ensures compatibility with standard 40 mm pipe systems, promoting secure joints and straightforward installation. The design minimizes flow disturbance at the bend and supports durable, low-maintenance operation in routine building services applications.

Suitable for

• Plumbing lines with 40 mm pipes
• Drainage and wastewater runs
• HVAC ductwork and ventilation with 40 mm connections
• Renovation and retrofit projects requiring angled pipe changes

Key specifications

• Nominal angle: 45°
• Outer diameter: 40 mm
• Function: directional elbow for pipe connection
• Application areas: plumbing, drainage, HVAC

How to use

Prepare the mating pipe ends by cleaning and deburring to ensure a smooth fit. Align the pipe sections to achieve the required 45° change and insert each pipe end into the fitting to the recommended insertion depth for the pipe system being used. Secure joints according to the pipe material and installation practice—this may include solvent welding, adhesive, mechanical coupling or sealants appropriate to the piping material. Verify alignment and test the system for tightness after installation.

Usage recommendations

Verify compatibility between the elbow and the specific 40 mm pipe type before installation. Use appropriate joining methods for the material of the pipes and the fitting, and follow local codes for plumbing, drainage and HVAC systems. Inspect joints after initial operation and during regular maintenance to ensure leak-free performance.