Copper End Cap Conex 22 mm — plumbing pipe fitting, brass-free copper closure

Conex copper end cap 22 mm is a plumbing pipe fitting designed to provide a secure closure for the end of a 22 mm copper pipe. Manufactured from copper, this end cap offers a corrosion-resistant termination suitable for potable water and heating systems. It is intended for use where a durable, metal-to-metal seal is required to cap supply lines, isolate sections during testing, or temporarily seal pipe ends before further modification.

Advantages

The copper construction ensures good thermal conductivity and long-term resistance to corrosion in typical domestic and commercial plumbing environments. Its precise 22 mm size provides a snug fit on standard copper tubing, reducing the risk of leaks when correctly installed. Being brass-free, the end cap avoids potential issues related to dezincification and is compatible with common plumbing joining methods for copper systems.

Suitable for

• Capping 22 mm copper water supply pipes
• Sealing pipe ends during pressure testing of plumbing systems
• Temporary closure of runs prior to system modifications or extensions
• Use in heating circuits and radiator feed/return lines sized 22 mm

Key specifications

• Material: copper
• Connection size: 22 mm (for 22 mm copper pipe)
• Function: end cap / closure for copper piping
• Typical applications: potable water and heating systems
• Corrosion resistance: suitable for standard plumbing environments

How to use

Prepare the pipe end by cutting squarely and removing burrs to ensure full contact. Fit the Conex copper end cap onto the cleaned 22 mm copper tube. Join the cap using the appropriate method for the system—soldering (capillary soldering), brazing, or a compatible mechanical joint—following established plumbing practices and local regulations. After joining, allow cooling and inspect the joint for complete sealing; perform a pressure test if required by the installation procedure.

Usage recommendations

For reliable performance, use with correctly sized 22 mm copper tubing and appropriate joining materials. When soldering or brazing, ensure flux and filler materials are suitable for potable water systems if used on drinking water lines. Observe local plumbing codes and safety precautions during installation and pressure testing.