Reducer SiGMA-Li R5040 50x40 mm pipe fitting

SiGMA-Li R5040 is a 50x40 mm pipe reducer designed to join pipes with different diameters. The fitting provides a smooth, compact transition from a 50 mm line to a 40 mm line, suitable for use in plumbing, drainage and HVAC systems where diameter adaptation is necessary. Its space-saving profile facilitates installation in confined locations while maintaining consistent flow characteristics for liquids or air.

Advantages

The reducer offers a reliable mechanical connection between two pipe sizes with minimal impact on flow. Its compact form factor reduces the required installation space and simplifies alignment. Built to standard dimensions, the fitting allows quick integration into existing pipelines and supports consistent sealing when installed with compatible seals or adhesives. The product’s straightforward geometry minimizes turbulence and pressure loss at the transition point.

Suitable for

• Connecting 50 mm and 40 mm pipes in domestic and commercial plumbing
• Transition sections in drainage systems
• Adapting pipe diameters in HVAC ducting for air distribution
• Repair or modification of existing pipework where size change is needed

Key specifications

• Input diameter: 50 mm
• Output diameter: 40 mm
• Type: concentric reducer for axial alignment
• Application: plumbing, drainage, HVAC systems
• Design: compact profile for tight installation spaces

How to use

Confirm compatibility of pipe materials and diameters before installation. Prepare pipe ends by cleaning and, if required by the pipe system, deburring to ensure smooth seating. Slide the reducer onto the larger or smaller pipe end according to the system layout and use the recommended sealing method for your piping type (mechanical clamp, elastomeric seal, solvent weld or adhesive) to secure the joint. Verify axial alignment and tighten connections evenly to avoid deformation of the fitting. After assembly, inspect the connection for leaks and perform a pressure or flow test appropriate to the system.

Usage recommendations

Use the reducer with compatible pipe materials and matching sealing systems to ensure leak-free operation. For installations subject to pressure or thermal cycling, choose appropriate seals and follow accepted installation practices. When routing in confined spaces, allow clearance for tools and future maintenance. If in doubt about material compatibility or required sealing methods, consult relevant technical guidelines or a qualified installer.