HN.HD14025 - Double Heating Pipe 140/25X2.3

Hyper flexible, pre‑insulated piping system, combining both the flow and the return medium pipes in the same jacket pipe, primarily intended for the transport of heating water in buried distribution networks.

Product Code HN.HD14025

Technical Information

  • EAN No:
  • Sales UoM: M
  • Net Weight: 1.85kg (per meter)
  • Length mm: 1000
  • Height mm: 140
  • Width mm: 140
  • Nominal Size mm: 2 x 25mm
  • Pressure Rating: SDR11 (6 bar)
  • Material: PE/PVC
  • dout (mm): 140
  • dout x s (mm): 25 x 2.3
  • din (mm): 20.4
  • Bending Radius [m](1): 0.35
  • Water Content [l/m]: 0.654
  • Heating Capacity [kW](2): 10 - 30
  • Heating Capacity [m/s]: 0.5 - 1.1
  • U-Value [W/mK](3): 0.211

(1) The indicated minimum bending radius can be applied permanently without affecting the system’s quality or performance (2) Heat capacity in kW for the carrier pipe (at water temp of 80°C and a ΔT of 20°C) (3) The U‑value enables easy heat loss calculation, as a function of the driving temperature difference


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  • Medium pipes: PE Xa/SDR 11/PN 6
  • EVOH Oxygen barrier in accordance with ISO 17455
  • Continuous operating temperature: 80°C
  • Max. operating temperature: 95°C
  • PE X insulation foam: < 1% water absorption in accordance with ISO 2896
  • Full coil length, all dimensions: 100 m
  • Designed in accordance with European standard EN 15632 1&3
  • CFC free production process