Copper reducing nipple SANHA 5243 42 x 28 mm

The SANHA 5243 copper reducing nipple 42 x 28 mm is a plumbing fitting designed to connect two copper pipes of different diameters. It provides a compact, corrosion-resistant transition from a 42 mm pipe to a 28 mm pipe, intended for use in potable water systems, heating circuits and general pipe installations where size reduction is required. The fitting is manufactured from copper to ensure good thermal conductivity and long service life under normal operating conditions.

Advantages

The copper construction offers natural corrosion resistance and compatibility with typical soldering and brazing techniques used in copper pipework. Its reducing design provides a tight, direct connection between larger and smaller pipes without the need for additional adapters, saving space in confined installations. The nipple’s smooth internal surface minimises flow resistance at the transition and supports hygienic potable water applications.

Suitable for

• Potable cold and hot water supply lines
• Domestic and commercial heating circuits
• Plumbing systems requiring pipe diameter reduction from 42 mm to 28 mm
• Repair or modification of existing copper pipework

Key specifications

• Material: Copper
• Type: Reducing nipple (straight, concentric)
• Connection sizes: 42 mm to 28 mm
• Suitable for: Soldering / brazing connections common to copper piping
• Application: Potable water and heating systems

How to use

Prepare the copper pipe ends by cutting square, removing burrs and cleaning with an appropriate flux cleaner. Fit the reducing nipple onto the prepared pipe ends, apply flux if required and perform soldering or brazing following standard installation procedures and local codes. Allow joints to cool naturally and inspect visually for continuous, smooth fillets. After installation, pressure-test the system according to applicable regulations to verify leak-tight performance.

Usage recommendations

The fitting should be installed by a qualified tradesperson using suitable flux and solder or brazing materials; observe system pressure and temperature limits and follow local plumbing regulations. For potable water applications ensure all materials and installation methods meet local health and safety standards.