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ISOFLOW 25/25/25/20 Quadruple - Heating & Sanitary DHW, 160mm Duct

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Lead time:  NEXT DAY (midday cutoff).

£ 448.05 448.05 GBP £ 448.05 Tax Excluded

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  • Insulated Duct Option
  • Length
  • Add Fittings Kit
  • Add Waterproof Heatshrink End Cap for Duct

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Insulated Duct Option: 160mm Duct

ISOFLOW Quadruple Pipe 25/25/25/20:

2x 25mm pipes for Heating - Internal bore 20.4mm - equivalent or very similar to 22mm copper.  

1x 25mm WRAS approved pipe for Sanitary hot water (DHW) flow - Internal bore 18mm

1x 20mm WRAS approved pipe for Sanitary hot water (DHW) secondary return - Internal bore 14.4mm

  1. Select the length you require - 5m to 100m
  2. Fittings are the brass clamp type (no special tooling required) and convert the durable pex-a pipe to male BSP - 3/4" for the 25mm pipes and 1/2" for the 20mm pipe.  The fittings you require are automatically calculated for your pipe configuration as selected.
  3. Heat shrink end caps cover the exposed insulation at the ends and prevent water ingress - recommended on all runs but imperative if ends are external or underground.
  4. To repeat the configuration for a second run of pipe of the same length please use the quantity button next to 'add to cart'.

Key Product Features (full specification and installation instructions can be found on the 'tech specs' page):

  • Heating carrier pipe:
    • PE-Xa/SDR 11/PN6:  Internal bore 20.4mm.
    • EVOH Oxygen barrier in accordance with ISO17455
  • Hot water (DHW) carrier pipe:
    • PE-Xa/SDR 7.4/PN10:  Internal bore 18mm & 14.4mm
    • WRAS Approved
  • Designed in accordance with BS15632-1&3
  • Continuous operating temp 80°C, Max 95 °C for limited period.
  • PE-X insulation foam: < 1% water absorption in accordance with ISO 2896
  • UV resistant corrugated outer duct
  • CFC-free production process

Shipping costs are dictated by pallet space required and will be calculated at checkout.  Please note cut to length product is not returnable for credit.  Visually the product may vary (pipe colour etc) but technical performance remains consistent.

Please call 0333 577 0210 if you require any advice or assistance.