Download Datasheet

SP20G precast headwalls are produced with a horizontal wing walls at the front of the apron. SP20G 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. SP20G precast headwalls have been designed to suit plastic, clay or concrete pipework up to 1050mm and have a backwall height of 1650mm. SP20G precast headwalls are manufactured in 2 sections. Althon SP20E 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 SP20G headwall weighs 6870kg / 3435kg 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 G Headwall line drawing
As standard our headwalls have a natural concrete finish.
We can offer coloured headwalls in 4 colours but the final shade is affected by many influences.
Our Headwall Products are available in a range of colours
Natural
Our Headwall Products are available in a range of colours
Cotswold
Our Headwall Products are available in a range of colours
Agate
Our Headwall Products are available in a range of colours
Raven Grey
Our Headwall Products are available in a range of colours
Everglade
Product Name
Max Pipe Opening PCC
Max Pipe Opening Plastic / C'ware
Backwall Height
Approx Headwall Weight (kg)
SP20 G Headwall
1050
1050
1650
6870

Filters for SP20 G Headwall Downloads. To Download CAD and PDF Files Please Register or Login

    All Available Downloads for SP20 G Headwall - Page 19 of 58

    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 G Headwall + 650 x 300mm Toe + Cranked Grating + Halfway Kee Klamp

    SP20 G Headwall + 650 x 300mm Toe + Sloped Grating + Halfway Kee Klamp

    SP20 G Headwall + 650 x 300mm Toe + 100mm Flap Valve

    SP20 G Headwall + 650 x 300mm Toe + 100mm Flap Valve + Cranked Grating

    SP20 G Headwall + 650 x 300mm Toe + 100mm Flap Valve + 3 Sided Kee Klamp

    SP20 G Headwall + 650 x 300mm Toe + 100mm Flap Valve + Cranked Grating + 3 Sided Kee Klamp

    SP20 G Headwall + 650 x 300mm Toe + 100mm Flap Valve + Backwall Kee Klamp

    SP20 G Headwall + 650 x 300mm Toe + 100mm Flap Valve + Cranked Grating + Backwall Kee Klamp

    SP20 G Headwall + 650 x 300mm Toe + 100mm Flap Valve + Halfway Kee Klamp

    SP20 G Headwall + 650 x 300mm Toe + 100mm Flap Valve + Cranked Grating + Halfway Kee Klamp

    SP20 G Headwall + 650 x 300mm Toe + 150mm Flap Valve

    SP20 G Headwall + 650 x 300mm Toe + 150mm Flap Valve + Cranked Grating

    SP20 G Headwall + 650 x 300mm Toe + 150mm Flap Valve + 3 Sided Kee Klamp

    SP20 G Headwall + 650 x 300mm Toe + 150mm Flap Valve + Cranked Grating + 3 Sided Kee Klamp

    SP20 G Headwall + 650 x 300mm Toe + 150mm Flap Valve + Backwall Kee Klamp

    SP20 G Headwall + 650 x 300mm Toe + 150mm Flap Valve + Cranked Grating + Backwall Kee Klamp

    SP20 G Headwall + 650 x 300mm Toe + 150mm Flap Valve + Halfway Kee Klamp

    SP20 G Headwall + 650 x 300mm Toe + 150mm Flap Valve + Cranked Grating + Halfway Kee Klamp

    SP20 G Headwall + 650 x 300mm Toe + 250mm Flap Valve

    SP20 G Headwall + 650 x 300mm Toe + 250mm Flap Valve + Cranked Grating

    SP20 G Headwall + 650 x 300mm Toe + 250mm Flap Valve + 3 Sided Kee Klamp

    SP20 G Headwall + 650 x 300mm Toe + 250mm Flap Valve + Cranked Grating + 3 Sided Kee Klamp

    SP20 G Headwall + 650 x 300mm Toe + 250mm Flap Valve + Backwall Kee Klamp

    SP20 G Headwall + 650 x 300mm Toe + 250mm Flap Valve + Cranked Grating + Backwall Kee Klamp

    SP20 G Headwall + 650 x 300mm Toe + 250mm Flap Valve + Halfway Kee Klamp

     

    Brochures, Datasheets and Installation Instructions for SP20 G Headwall

    Free headwall design service

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

    More information