Three types of heating pipes are available for use in underfloor heating and cooling systems: duo-flex PE-X plastic safety heating pipes made of cross-linked polyethylene, non-cross-linked duo-flex plastic safety heating pipes PE-RT, and tri-o-flex® metal safety heating pipes. The three types of pipes are distinguished by long life cycles, corrosion and incrustation resistance, chemical resistance and flexibility, and are especially easy to install.
duo-flex PE-Xa
| Max. operating temperature | 95 °C |
| Max. operating pressure | 6 bar |
| Bending radius | 5 x d |
| Coefficient of thermal expansion | 1.4 x 10-4 K-1 |
| Max. operating temperature | 95 °C |
| Max. operating pressure | 6 bar |
| Bending radius | 5 x d |
| Coefficient of thermal expansion | 1.4 x 10-4 K-1 |
tri-o-flex®
| Max. operating temperature | 95 °C |
| Max. operating pressure | 6 bar |
Bending radius | 3 x d/5 x d with/without bending help |
| Coefficient of thermal expansion | 2.3 x 10-5 K-1 |
| Max. operating temperature | 95 °C |
| Max. operating pressure | 6 bar |
Bending radius | 3 x d/5 x d with/without bending help |
| Coefficient of thermal expansion | 2.3 x 10-5 K-1 |
duo-flex PE-RT
| Max. operating temperature | 95 °C |
| Max. operating pressure | 6 bar |
| Bending radius | 5 x d |
| Coefficient of thermal expansion | 1.5 x 10-4 K-1 |
| Max. operating temperature | 95 °C |
| Max. operating pressure | 6 bar |
| Bending radius | 5 x d |
| Coefficient of thermal expansion | 1.5 x 10-4 K-1 |
duo-flex Klett PE-Xa
| Max. operating temperature | 95 °C |
| Max. operating pressure | 6 bar |
| Bending radius | 5 x d |
| Coefficient of thermal expansion | 1.4 x 10-4 K-1 |
| Max. operating temperature | 95 °C |
| Max. operating pressure | 6 bar |
| Bending radius | 5 x d |
| Coefficient of thermal expansion | 1.4 x 10-4 K-1 |
| Max. operating temperature | 95 °C |
| Max. operating pressure | 6 bar |
| Bending radius | 5 x d |
| Coefficient of thermal expansion | 1.4 x 10-4 K-1 |
| Max. operating temperature | 95 °C |
| Max. operating pressure | 6 bar |
Bending radius | 3 x d/5 x d with/without bending help |
| Coefficient of thermal expansion | 2.3 x 10-5 K-1 |
| Max. operating temperature | 95 °C |
| Max. operating pressure | 6 bar |
| Bending radius | 5 x d |
| Coefficient of thermal expansion | 1.5 x 10-4 K-1 |
| Max. operating temperature | 95 °C |
| Max. operating pressure | 6 bar |
| Bending radius | 5 x d |
| Coefficient of thermal expansion | 1.4 x 10-4 K-1 |
Please refer to the technical information for the permissible permanent temperatures at the respective operating pressure according to the relevant standards.
