Conex coupling for soldered and threaded connections 15 x 3/4" bronze (model 4270G015006000)

Conex coupling for soldered and threaded connections 15 x 3/4" in bronze is designed to join a 15 mm copper or compatible soldered pipe to a 3/4" threaded fitting. The coupling provides a reliable transition between soldered and threaded joints in plumbing, heating and potable water systems where dissimilar connection types are used. Constructed from bronze, the fitting offers corrosion resistance and mechanical strength for domestic and commercial installations.

Advantages

The bronze construction ensures durability and resistance to corrosion in potable water and heating environments. A soldered end provides a leak-tight joint to 15 mm copper or compatible pipes, while the threaded 3/4" end enables secure connection to standard threaded fittings and valves. The coupling is suitable for mixed-connection assemblies, simplifying installation where a transition between soldered and threaded components is required.

Suitable for

• Transitioning between 15 mm soldered copper pipes and 3/4" threaded valves or fittings
• Domestic and commercial plumbing repairs and modifications
• Heating system connections where a combination of soldered and threaded joints is needed
• Potable water installations requiring corrosion-resistant fittings

Key specifications

• Connection types: one soldered end for 15 mm pipe, one 3/4" threaded end
• Material: bronze
• Compatible with copper and similar solderable piping
• Designed for potable water and heating system use

How to use

Prepare the 15 mm copper pipe by cutting square and cleaning the outside surface and inner end to remove oxidation and debris. Apply flux to the pipe and inside the soldered end of the coupling, assemble and heat the joint evenly until solder flows and a continuous fillet is formed. Allow the joint to cool naturally. Thread sealant or tape should be applied to the 3/4" male thread before connecting to the coupling to ensure a leak-tight threaded connection. Tighten the threaded fitting to the recommended torque for the fitting material and application.

Usage recommendations

Use appropriate solder and flux rated for potable water systems when making the soldered joint. Observe local plumbing codes and pressure ratings for heating and water installations. When installing, avoid overheating threaded portions and ensure proper sealing of the threaded connection with suitable sealant or tape.