Conex coupler for soldered and threaded connections 22 x 3/4" bronze (model 4270G022006000)

The Conex coupler for soldered and threaded connections 22 x 3/4" bronze is a dual-purpose fitting designed to join copper or compatible pipes where a combination of capillary (soldered) and threaded joints is required. Manufactured in bronze, the coupler offers corrosion resistance suitable for plumbing and heating installations. Its 22 mm socket provides a secure capillary connection while the 3/4" threaded end accepts standard male-threaded fittings or valves, enabling transition between soldered copper piping and threaded components without additional adapters.

Advantages

This bronze coupler combines a soldering socket and a threaded port in a single component to simplify installations and repairs. Bronze construction enhances durability and corrosion resistance compared with some other metals, improving performance in potable water and heating systems. The mixed-connection design reduces the need for extra fittings or adapters, saving installation time and lowering the risk of potential leak points when joining dissimilar connection types.

Suitable for

• Plumbing systems for potable water distribution
• Heating systems, including radiators and boilers
• Repair and modification of copper pipework where a threaded transition is needed
• Connecting valves, gauges or other threaded components to soldered copper lines

Key specifications

• Material: bronze for enhanced corrosion resistance
• Socket (capillary) size: 22 mm for soldered copper tubing
• Threaded connection: 3/4" female thread compatible with standard male-threaded fittings
• Combination fitting: one soldered socket and one threaded port for transition use

How to use

Prepare the copper pipe by cutting squarely and cleaning the outer surface and the inside of the socket to remove oxides and contaminants. Apply appropriate flux to the joint area and insert the pipe fully into the 22 mm socket. Heat the joint evenly with a suitable torch until the flux melts and solder flows to form a capillary seal. Allow the soldered joint to cool and clean off residue. For the threaded side, wrap the male thread with suitable sealing tape or apply a compatible thread sealant, then hand-start the male fitting and tighten with a wrench to the required torque for a leak-free mechanical connection.

Usage recommendations

The coupler is intended for use with compatible copper or metal piping and standard 3/4" threaded fittings; verify material compatibility and system pressure ratings before installation. Use proper soldering techniques and approved flux and solder for potable water systems, and follow local plumbing codes and regulations. For installations involving high operating temperatures or aggressive media, consult system specifications to confirm bronze suitability.