Transition for metal-plastic pipe PEX-AL-PEX F 26 mm.x 1

The PEX-AL-PEX 26 mm × 1" F adapter is a detachable compression fitting designed to securely connect Ø26 mm multilayer (metal-plastic) pipe to plumbing and heating components with a 1" male thread. It is most commonly used on main lines and in higher-flow nodes—such as boiler and water heater connections, manifold groups, pump modules, filters, pressure tanks (hydroaccumulators), shut-off valves, and distribution points. The adapter enables a clean “pipe → thread” transition without unnecessary extra adapters, keeps the installation compact, and reduces the number of joints—thereby lowering potential leak points.

The fitting is made of brass with a nickel-plated finish. The brass body provides strength and reliable threads, while nickel plating protects against corrosion, mechanical wear, and exposure to aggressive liquids or environments. This is particularly important in boiler rooms, technical areas, manifold cabinets, and humid zones. The adapter is suitable for houses and apartments, as well as steam rooms and saunas where conditions can be more demanding and material quality is critical.

On the pipe side, it uses a compression connection: the Ø26 mm PEX-AL-PEX pipe is secured on the spigot by a compression ring and union nut. This installation method requires no welding, soldering, or press tools—typically an adjustable wrench is enough. The detachable design makes servicing easier: you can disassemble the joint to replace a valve, inspect the connection, or upgrade a section without fully dismantling the pipework. For reassembly, it is good practice to check the compression ring and replace it if needed to maintain consistent leak-tightness.

For a reliable result, proper pipe preparation is essential: make a clean square 90° cut, calibrate the pipe end, and deburr/chamfer. Then slide the nut and compression ring onto the pipe, insert the pipe fully into the fitting, and tighten the nut using two wrenches (one holding the fitting body to prevent twisting). Avoid over-tightening, as excessive force may deform the ring or damage the pipe. Connect the 1" female thread (F) to the male-threaded component using a suitable sealing material selected for the thread type and operating conditions to ensure a durable, leak-tight joint.

The adapter is engineered for stable performance in building services systems: -20°C to +90°C working temperature and up to 10 bar nominal pressure. These ratings make it suitable for most residential water supply and heating applications (hot/cold water), including installations in technical niches and near finished surfaces such as tiled areas where leak prevention is essential.

If you need a reliable Ø26 mm multilayer pipe adapter with a 1" female thread for main lines and critical nodes, featuring a strong brass body and protective nickel plating, this PEX-AL-PEX compression connector is an optimal choice for long-lasting installation.