RIIFO

• Available in coils for long continuous runs, straight lengths for larger diameters and exposed pipework, and pre-insulated formats with a factory-applied foam jacket. The right format depends on the run, and our RIIFO Pipe page walks through choosing between them.

• The full connection range for the system, from couplings, elbows and tees through to threaded adaptors, wallplate elbows and the FS5 brass manifold for distributing supply across multiple circuits. Every fitting presses with TH or U profile jaws. Explore the range on our RIIFO F18 Fittings page.

• Quarter-turn isolation built directly into the pipe run, with low-profile butterfly handles in red or blue and press, male BSP and female BSP configurations. Full details on our RIIFO F18 Valves page.

• Everything needed to prepare and press the system, including pipe cutters, bevelling and calibration tools, bending springs and press tooling, organised around the installation workflow on our RIIFO Tools & Accessories page.

Multilayer pipe with press fittings has become one of the most popular approaches to modern plumbing and heating installation, and for practical reasons. Connections are made mechanically with a press tool, so there is no flame, flux or solder, removing the need for hot works permits and making the system safe to install in occupied buildings. Each joint takes seconds to complete and is ready for immediate testing, with no cooling or curing time.

The pipe itself bends by hand or with a bending spring and holds its shape, allowing long, continuous runs that route around obstacles with connections placed only where they are needed. Fewer joints mean faster installation and neater pipework. The PEX/AL/PEX construction does not corrode or scale like metal pipework, while the aluminium core gives it the rigidity and low expansion that all-plastic systems lack, along with a complete oxygen barrier for central heating circuits.

The RIIFO system is suited to hot and cold water services and central heating throughout domestic and commercial buildings. Typical projects include full first fix plumbing in new build and renovation, radiator circuits and manifold-fed distribution, bathroom and kitchen installations, and repair or replacement work in occupied properties where flame-free jointing keeps disruption to a minimum. The same system scales from a single fixture feed to multi-floor commercial distribution.

• Yes, RIIFO multilayer pipe and F18 fittings are WRAS approved, confirming their suitability for use on wholesome water supplies in the UK.

• RIIFO multilayer pipe uses a PEX/AL/PEX construction: an inner and outer layer of cross-linked polyethylene bonded to a welded aluminium core. This combines the corrosion resistance of plastic with the strength, shape retention and oxygen barrier of metal.

• F18 is RIIFO's press-fit connection system for multilayer pipe. Brass fittings with stainless steel press sleeves are crimped onto the pipe with a press tool, forming permanent, flame-free joints across a range of couplings, elbows, tees, threaded adaptors and valves.

• The F18 range is multi-profile and compatible with both TH and U profile press jaws, so if your press tool carries either profile, it will press the complete system.

• Yes. The aluminium core provides a complete oxygen barrier, protecting boilers, radiators and other system components, and the pipe and fittings are rated for the temperatures and pressures found in domestic and commercial heating circuits.