SP20L precast headwalls are produced with wing walls 1050mm high at the front of the apron. SP20L 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. SP20L precast headwalls have been designed to suit plastic, clay and concrete pipework up to 1500mm and have a backwall height of 2350mm. SP20 L precast headwalls are manufactured in 2 sections. Althon SP20L 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.

SP20 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. The SP20L headwall weighs 7800kg / 3900kg per half.

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

SP20 L Headwall line drawing
Product Name
Max Pipe Opening PCC
Max Pipe Opening Plastic / C'ware
Backwall Height
Approx Headwall Weight (kg)
SP20 L Headwall
1500
1500
2350
7800

Filters for SP20 L Headwall Downloads

    All Available Downloads for SP20 L Headwall - Page 1 of 49

    You can select multiple files below to be added to a single zip file, your selections will be retained across different Headwalls

    Title
    PDF
    CAD
    Add to Zip File

    SP20 L Headwall + Sfa1 375 Outfall Safety Grille

    SP20 L Headwall + Sfa1 450 Outfall Safety Grille

    SP20 L Headwall + Sfa1 600 Outfall Safety Grille

    SP20 L Headwall + Sfa1 750 Outfall Safety Grille

    SP20 L Headwall + Sfa1 900 Outfall Safety Grille

    SP20 L Headwall + Sfa1 1050 Outfall Safety Grille

    SP20 L Headwall + Sfa1 1200 Outfall Safety Grille

    SP20 L Headwall + Cranked Grating

    SP20 L Headwall + Sloped Grating

    SP20 L Headwall + 3 Sided Kee Klamp

    SP20 L Headwall + 3 Sided Kee Klamp + Sfa1 375 Outfall Safety Grille

    SP20 L Headwall + 3 Sided Kee Klamp + Sfa1 450 Outfall Safety Grille

    SP20 L Headwall + 3 Sided Kee Klamp + Sfa1 600 Outfall Safety Grille

    SP20 L Headwall + 3 Sided Kee Klamp + Sfa1 750 Outfall Safety Grille

    SP20 L Headwall + 3 Sided Kee Klamp + Sfa1 900 Outfall Safety Grille

    SP20 L Headwall + 3 Sided Kee Klamp + Sfa1 1050 Outfall Safety Grille

    SP20 L Headwall + 3 Sided Kee Klamp + Sfa1 1200 Outfall Safety Grille

    SP20 L Headwall + 3 Sided Kee Klamp + Cranked Grating

    SP20 L Headwall + 3 Sided Kee Klamp + Sloped Grating

    SP20 L Headwall + Backwall Kee Klamp

    SP20 L Headwall + Backwall Kee Klamp + Sfa1 375 Outfall Safety Grille

    SP20 L Headwall + Backwall Kee Klamp + Sfa1 450 Outfall Safety Grille

    SP20 L Headwall + Backwall Kee Klamp + Sfa1 600 Outfall Safety Grille

    SP20 L Headwall + Backwall Kee Klamp + Sfa1 750 Outfall Safety Grille

     

    Datasheet and Installation Instructions for SP20 L Headwall

    Free headwall design service

    If you cannot find what you are looking for our Free Headwall Design Service can help.

    More information