3-Layer PE-RT EVOH Barrier pipe

The 3-Layer PE-RT EVOH Barrier pipe is a PE-RT pipe for wet underfloor heating, with an outer EVOH layer that keeps oxygen out of the closed heating circuit. It is made to EN ISO 22391-2 and DIN 4726, and comes in long coils so that each heating loop can be laid in one piece from the manifold.

The 3-Layer PE-RT EVOH Barrier pipe from the THERMALINO Smart line is a PE-RT pipe for wet underfloor heating systems. PE-RT stands for polyethylene of raised temperature resistance. The pipe has three layers: the PE-RT base pipe, an adhesive layer and an outer EVOH oxygen barrier. It is made to EN ISO 22391-2 and DIN 4726. The EVOH layer limits the diffusion of oxygen through the pipe wall into the closed heating circuit. This protects the boiler, heat pump, circulating pump, manifold and other metal components connected to the system from oxygen corrosion. The maximum operating pressure is 8 bar and the maximum operating temperature is 70 °C. The pipe is rated for application classes 1, 2 and 5 at 8 bar and class 4 at 10 bar. Pressure ratings at other temperatures and service-life values are given in the technical data sheet. The pipe comes in red in four sizes, Ø16x2.0, Ø17x2.0, Ø20x2.0 and Ø25x2.3 mm, and each size is available in 200 m, 500 m and 600 m coils. With these coil lengths, each heating loop can run from the manifold through bends and turns in one piece. Joints are only needed at the connection points, so there are no fittings inside the screed. This underfloor heating pipe is laid without a protective sleeve. It can be fixed to insulation panels, clip rails or tacker systems and then covered with screed. At the underfloor heating manifold it is connected with fittings that match its outside diameter and wall thickness.