Curve Back General Purpose Headwall

This unit is designed to be used where the drain run enters the water course at an angle. The pipe openings are formed where required by use of a masonry disc cutter and opening the hole up to the desired diameter.

These versatile, lightweight GRC (Glass Reinforced Concrete) solutions are designed for efficient drainage in various settings. The Small General Purpose Headwall is ideal for 90mm pipes, with knockout options for 125mm and 190mm diameters and weighs approximately 11.5kg.

This headwall is particularly useful in locations with a batter angle of at least 45 degrees. The Large General Purpose Headwall, weighing around 25kg, accommodates 200mm pipes with knockout options for 300mm and 360mm diameters, suitable for minor watercourses with moderate flow rates.

  • Standard Stock item – Delivery 3-5 days

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Product information.

KEY FEATURES.

  • Precast in controlled factory conditions with steel moulds to guarantee accuracy
  • Faster, cheaper and safer than casting on site.
  • Coloured concrete and powder coated steelwork options available
  • ECO 1 sustainable concrete mix as standard.
  • ECO 1 Ultra option available
  • Hinged galvanized steel grates are available for all GRC headwalls, with optional pipe-mounted vermin gates upon request.

 

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installation guide

expert tips and best practices.

Dig out sufficiently to allow the headwall flanges to finish flush with the batter. Take the outfall pipe (minimum length 1.5m of rigid impervious pipe) and slide it though the headwall so that it protrudes approximately 50mm. Make a good connection with the land drain and seal by returning approximately 150mm of soil into the trench and consolidating. Unravel the string and draw the anchor back along the trench as the rest of the backfilling is completed.

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