Conex coupling for soldered and threaded connections 18x1/2" bronze model 4270G018004000

Conex coupling for soldered and threaded connections 18x1/2" bronze (model 4270G018004000) is a compact pipe fitting designed to join copper or compatible metal pipes where a change from a soldered joint to a threaded connection is required. The coupling combines a solderable copper end with a threaded female end in a bronze body to provide a robust transition fitting for plumbing systems in residential and light commercial environments. It is suitable for use on potable water, heating circuits and general plumbing repairs when compatible materials and temperatures are observed.

Advantages

The bronze body offers corrosion resistance and mechanical strength compared with plain brass components, while the solderable end enables a leak-tight permanent joint to copper tubing. The threaded female connection facilitates easy assembly with standard 1/2" male threaded fittings and allows disassembly for maintenance or reconfiguration. Compact dimensions reduce the need for additional adapters and enable installation in confined spaces. The design supports reliable sealing when proper soldering technique and compatible thread sealing (such as PTFE tape or joint compound) are applied.

Suitable for

• Joining copper pipe to a 1/2" male threaded fitting where one end is soldered
• Plumbing repairs and pipe system extensions in domestic and light commercial buildings
• Connections in potable water and heating circuits (subject to system temperature and pressure limits)
• Situations requiring a durable metal transition between different joint types

Key specifications

• Material: bronze body with solderable copper-compatible end
• Connection types: one solderable end and one 1/2" female threaded end
• Size: 18 mm x 1/2"
• Typical applications: potable water, heating circuits, general plumbing
• Design: compact transition coupling suitable for confined installations

How to use

Prepare the copper pipe by cutting square, deburring and cleaning the end to be soldered. Apply appropriate flux to the solderable end and slide the coupling onto the pipe; heat the joint evenly and apply solder until a continuous fillet is formed around the joint. Allow the assembly to cool naturally and wipe away flux residues. For the threaded end, use suitable thread sealing material on the male thread (for example PTFE tape or approved joint compound) and tighten to the required torque for a leak-free connection. Inspect joints visually and pressure-test the system according to local codes and standards before putting into service.

Usage recommendations

Ensure compatibility of materials, system pressures and temperatures before installation. Use proper soldering techniques and certified thread sealants where applicable. Follow local plumbing regulations and safety practices, including system flushing and pressure testing after installation.