Pre-Insulated Pipe

Microflex Quadro

Four core pre-insulated pipe suitable for transporting both heating water and hot water from central plant buildings or between out buildings and the main premises.

Flexible pre-insulated, self-compensating underground pipe comprising two heating pipes and two sanitary pipes. Designed for heating water (flow and return), and equipped with a sanitary hot water pipe and a pipe for the circulation loop.


Transport pipes – Corrosion-resistant transport pipe in cross-linked PE-Xa in accordance with EN ISO 15875, with yellow oxygen diffusion barrier in accordance with DIN 4726 for the heating water pipes.

Insulation – Thermal, elastic, CFC-free foam insulation made from cross-linked PE-X with closed microcellular structure. Minimal water absorption capacity of < 1% in accordance with ISO 2896. Insulating PE centrepiece guarantees an effective separation of flow, return, hot water and circulation pipes.

Casing – Corrugated outside casing in HDPE, made in accordance with the closed chamber principle to provide high-grade protection to the piping system.

Technical Details

Heating pipes:

  • Max operating pressure: 6 bar
  • Max fluid temperature: + 95°C
  • PE-Xa pipes: SDR 11

Sanitary pipes:

  • Max operating pressure: 10 bar
  • Max fluid temperature: + 95°C
  • PE-Xa pipes: SDR 7.4

Standard full coil length: 100 m

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