Copper reducing nipple SANHA 22 x 18 mm model 5243, MPN 152432218

Copper reducing nipple SANHA 22 x 18 mm model 5243 is a compact plumbing fitting designed to connect copper pipes of different outside diameters. Made from copper, the nipple forms a solid, leak-resistant reduction between 22 mm and 18 mm tubing and is intended for use in potable water, heating and general plumbing systems where a durable metallic transition is required.

Advantages

The fitting provides a reliable mechanical and hydraulic connection between two copper pipe sizes without the need for additional adapters. Its solid copper construction offers good corrosion resistance and thermal conductivity for heating and hot water applications. The compact design reduces space requirements in tight installations and enables straightforward soldering or joining with compatible copper plumbing techniques.

Suitable for

• Reducing 22 mm copper pipe to 18 mm copper pipe
• Domestic and commercial potable water installations
• Hot water and heating circuits
• General plumbing repairs and renovations

Key specifications

• Material: copper
• Connection sizes: 22 mm × 18 mm (outside diameters)
• Type: reducing nipple / concentric reducer
• Typical joining methods: soldering/brazing or approved mechanical joining compatible with copper
• Application: potable water, heating, general plumbing

How to use

Prepare pipe ends by cutting squarely, cleaning and degreasing the copper surfaces. Fit the reducing nipple onto the 22 mm and 18 mm pipe ends, ensuring full end engagement and proper alignment. Join the connection using the appropriate method for the system — capillary soldering or brazing where specified, or mechanical fittings approved for copper. After joining, inspect the joints visually and perform a pressure test according to local plumbing regulations to verify leak-tightness.

Usage recommendations

Ensure compatibility with the chosen joining method and follow local building codes. Use flux and filler materials suitable for potable water systems when soldering, and allow appropriate cooling time before pressurizing the system. For installations in heating circuits, select solder alloys and procedures rated for operating temperatures and pressures expected in the system.