Conex fitting nipple 35x5 / 1¼" copper-brass for soldered and threaded connections

Conex fitting nipple 35x5 / 1¼" copper-brass for soldered and threaded connections is a short straight joiner designed for mixed soldered and threaded pipework. Manufactured from a copper–brass alloy, the nipple combines solderable surfaces with internal and external thread sections to create reliable transitions between soldered copper pipework and threaded fittings in water and heating systems. The compact form factor and standard 1¼" nominal size make it suitable for integrating into tight assemblies where both soldered and screwed joints are required.

Advantages

The copper-brass construction offers corrosion resistance and good thermal conductivity while providing surfaces suitable for soldering and durable threads for mechanical jointing. The dual-function design reduces the need for additional adapters by combining soldered and threaded connections in a single component. Its short length simplifies installation in confined spaces and supports professional plumbing practices by ensuring a secure, leak-resistant interface when installed correctly.

Suitable for

• Joining copper pipe to threaded fittings in potable water systems
• Connecting heating circuit pipework to valves and radiators with threaded ports
• Retrofit work where a soldered run must transition to a threaded fixture

Key specifications

• Nominal diameter: 35 x 5 mm (1¼" nominal size)
• Material: copper‑brass alloy suitable for soldering and mechanical threading
• Connection types: solderable section plus internal and/or external threaded section
• Form factor: short straight nipple for inline joining
• Typical applications: cold and hot water systems, central heating circuits

How to use

Prepare the pipe ends by cutting square and deburring. Clean the soldering surfaces and apply appropriate flux before heating and soldering the copper end of the nipple to the pipe. For the threaded connection, ensure threads are clean and apply suitable thread sealant or tape before tightening into the mating fitting. Assemble with correct alignment and torque to avoid overstressing the component; follow standard plumbing installation practices and local regulations. Allow soldered joints to cool and inspect for continuity and leaks before placing the system back into service.

Usage recommendations

Use qualified installation materials and tools, observe compatibility with system media and temperatures, and perform pressure tests after installation. Avoid mixing with incompatible metals without proper dielectric isolation to reduce risk of galvanic corrosion.