VIEGA transition soldered fitting 35 mm x 3/2" (model 174484)

VIEGA transition soldered fitting 35 mm x 3/2" (model 174484) is a brass soldered reducer designed to connect 35 mm copper or compatible tubing to a 3/2" spigot or threaded connection where a change of diameter is required. The fitting provides a solder cup on the larger end and a 3/2" male spigot on the smaller end, enabling a reliable capillary-bonded joint for plumbing and heating systems that use soldered copper connections.

Advantages

The fitting is manufactured to dimensional standards suitable for copper piping and offers a robust soldered joint that resists leaks when installed correctly. Its transition design simplifies adapting between metric copper tube and imperial threaded or spigot components without additional adapters. The brass construction provides good corrosion resistance in typical potable water and heating environments and supports standard soldering techniques for a permanent connection.

Suitable for

• Joining 35 mm copper or compatible tubing to 3/2" spigot or threaded components
• Plumbing systems for potable water distribution
• Heating installations including radiators and boiler connections
• Retrofit and repair work where a change of diameter is required

Key specifications

• Connection types: solder cup (35 mm) to 3/2" spigot
• Material: brass (suitable for soldering)
• Function: diameter transition / reducer
• Application: potable water and heating systems
• Joint type: soldered/capillary connection on the larger end

How to use

Prepare the 35 mm copper tube by cleaning and deburring the end, and ensure the spigot or mating component is free from dirt and oxidation. Apply appropriate flux to the solder cup and the tube end, assemble the parts fully, and heat the joint evenly until the solder flows around the connection. Allow the joint to cool naturally and then inspect for a continuous solder fillet and absence of gaps. Use compatible solders and fluxes and follow local regulations and standards for potable water or heating installations.

Usage recommendations

Ensure correct material compatibility and proper surface preparation before soldering. Verify system pressure ratings and local codes for soldered joints and use appropriate personal protective equipment during installation. If threaded mating components are used, ensure proper sealing methods for the threaded connection where applicable.