Conex transitional nipple LWxGZ 4243g 28x1¼ — brass fitting for pipe connection

Conex transitional nipple LWxGZ 4243g 28x1¼ is a brass fitting designed to join a 28 mm pipe to a 1¼-inch threaded connection. Intended for potable water and heating systems, the fitting provides a reliable, leak-resistant transition between metric and imperial pipe sizes. Its brass construction offers corrosion resistance and mechanical strength for typical residential and commercial plumbing installations.

Advantages

The brass construction ensures durability and resistance to corrosion in water and heating applications. The transitional design enables a secure connection between a 28 mm smooth or compression pipe and a 1¼-inch threaded fitting, reducing the need for multiple adapters. Precision threads and a smooth bore minimize the risk of leaks when installed correctly and compatible sealing materials are used.

Suitable for

• Connecting 28 mm copper or compatible pipes to 1¼-inch threaded valves, radiators or fittings
• Domestic potable water supply lines and hot-water heating circuits
• Commercial plumbing systems requiring metric-to-imperial transitions

Key specifications

• Material: brass suitable for water and heating systems
• Pipe end size: 28 mm
• Threaded end size: 1¼ inch
• Connection type: transitional nipple for metric-to-imperial jointing
• Application: potable water and heating installations

How to use

Prepare both pipe and threaded fitting by cleaning mating surfaces and removing any debris. Use the appropriate method to join the 28 mm pipe to the nipple — for example, soldering, compression sleeve, or push-fit procedure depending on the pipe system in use — and apply suitable thread sealant (thread tape or liquid sealant) to the 1¼-inch threaded end before tightening. Ensure connections are tightened to the torque recommended for the mating fittings and verify alignment to avoid strain. After installation, pressure-test the system according to local regulations to confirm there are no leaks.

Usage recommendations

Use compatible sealing materials and follow manufacturer guidance for joining methods appropriate to the pipe type. Avoid excessive torque on threads to prevent distortion. Inspect connections periodically and replace the fitting if signs of corrosion or wear appear.