Download Datasheet

SP20N precast headwalls are produced with a horizontal wing walls at the front of the apron. SP20N 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. SP20N precast headwalls have been designed to suit plastic, clay and concrete pipework up to 1500mm and have a backwall height of 2350mm. SP20 N precast headwalls are manufactured in 2 sections. Althon SP20N 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 SP20N headwall weighs 8685kg / 4343kg 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 N 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 N Headwall
1500
1500
2350
8685

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    All Available Downloads for SP20 N Headwall - Page 20 of 69

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    SP20 N Headwall + 400 x 300mm Toe + 1000mm Penstock + Cranked Grating + 3 Sided Kee Klamp

    SP20 N Headwall + 400 x 300mm Toe + 1000mm Penstock + Backwall Kee Klamp

    SP20 N Headwall + 400 x 300mm Toe + 1000mm Penstock + Cranked Grating + Backwall Kee Klamp

    SP20 N Headwall + 400 x 300mm Toe + 1000mm Penstock + Halfway Kee Klamp

    SP20 N Headwall + 400 x 300mm Toe + 1000mm Penstock + Cranked Grating + Halfway Kee Klamp

    SP20 N Headwall + 400 x 300mm Toe + 1100mm Penstock

    SP20 N Headwall + 400 x 300mm Toe + 1100mm Penstock + Cranked Grating

    SP20 N Headwall + 400 x 300mm Toe + 1100mm Penstock + 3 Sided Kee Klamp

    SP20 N Headwall + 400 x 300mm Toe + 1100mm Penstock + Cranked Grating + 3 Sided Kee Klamp

    SP20 N Headwall + 400 x 300mm Toe + 1100mm Penstock + Backwall Kee Klamp

    SP20 N Headwall + 400 x 300mm Toe + 1100mm Penstock + Cranked Grating + Backwall Kee Klamp

    SP20 N Headwall + 400 x 300mm Toe + 1100mm Penstock + Halfway Kee Klamp

    SP20 N Headwall + 400 x 300mm Toe + 1100mm Penstock + Cranked Grating + Halfway Kee Klamp

    SP20 N Headwall + 650 x 300mm Toe

    SP20 N Headwall + 650 x 300mm Toe + Sfa1 375 Outfall Safety Grille

    SP20 N Headwall + 650 x 300mm Toe + Sfa1 450 Outfall Safety Grille

    SP20 N Headwall + 650 x 300mm Toe + Sfa1 525 Outfall Safety Grille

    SP20 N Headwall + 650 x 300mm Toe + Sfa1 600 Outfall Safety Grille

    SP20 N Headwall + 650 x 300mm Toe + Sfa1 675 Outfall Safety Grille

    SP20 N Headwall + 650 x 300mm Toe + Sfa1 750 Outfall Safety Grille

    SP20 N Headwall + 650 x 300mm Toe + Sfa1 825 Outfall Safety Grille

    SP20 N Headwall + 650 x 300mm Toe + Sfa1 900 Outfall Safety Grille

    SP20 N Headwall + 650 x 300mm Toe + Sfa1 1050 Outfall Safety Grille

    SP20 N Headwall + 650 x 300mm Toe + Sfa1 1200 Outfall Safety Grille

    SP20 N Headwall + 650 x 300mm Toe + Cranked Grating

     

    Brochures, Datasheets and Installation Instructions for SP20 N Headwall

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