Backwall Height

Backwall heights: 1300mm - 2350mm

Single or Multiple Pipe openings

Single or multiple pipe openings

Specifiable invert levels

Specifiable pipe invert levels

Maximum pipe size

Maximum pipe size:
1800mm

Althon SP27 precast headwalls are produced with a higher wing walls at the front of the apron. SP27 precast headwalls are for inlets or outlets situated in locations with high or steep embankments or where the structure is required to provide protection to an accessory such as a flap valve, duck bill valve, stop logs or weir wall.

SP27 precast concrete headwalls are manufactured in two sections.

SP20 precast headwalls have been designed to suit plastic, clay and concrete pipework up to 1500mm. The backwall heights available range from 1300mm to 2350mm

Althon SP27 precast concrete headwalls are cast to suit the diameter and type of pipe being used and can be provided with fixings cast in at the time of manufacture to accommodate gratings, trash screens, flap valves, ladders, guardrails and flow and depth monitoring equipment.

SP27 precast headwall units can be factory fitted with a range of accessories such as flap valves, penstocks, Kee Klamp® handrails and a selection of gratings depending on the application.

If you require any assistance or more information please contact us by phone on 01603 488700 or by email sales@althon.co.uk

SP27 E Headwall

SP27 E Headwall

  • Up to 750mm Pipework
  • 1300mm Backwall Height
SP27 F Headwall

SP27 F Headwall

  • Up to 1050mm Pipework
  • 1650mm Backwall Height
SP27 G Headwall

SP27 G Headwall

  • Up to 1050mm Pipework
  • 1650mm Backwall Height
SP27 H Headwall

SP27 H Headwall

  • Up to 1500mm Pipework
  • 2000mm Backwall Height
SP27 I Headwall

SP27 I Headwall

  • Up to 1500mm Pipework
  • 2000mm Backwall Height
SP27 J Headwall

SP27 J Headwall

  • Up to 1500mm Pipework
  • 2000mm Backwall Height
SP27 K Headwall

SP27 K Headwall

  • Up to 1800mm Pipework
  • 2350mm Backwall Height
SP27 L Headwall

SP27 L Headwall

  • Up to 1800mm Pipework
  • 2350mm Backwall Height
SP27 M Headwall

SP27 M Headwall

  • Up to 1800mm Pipework
  • 2350mm Backwall Height
SP27 N Headwall

SP27 N Headwall

  • Up to 1800mm Pipework
  • 2350mm Backwall Height