Althon SFA Type 3 gratings are similar to Type 1 gratings except the grate finishes 150mm above the invert level of the incoming pipe allowing low flows to run uninterrupted without compromising safety.
The Sewers for Adoption/Scotland compliant outfall safety grille should be used on outfalls of 350mm diameter or greater. Manufactured from 70 x 70 x 10mm Steel Angle for the frame and 50 x 12mm Flat Bars at 100mm Spacing for the screen all fully galvanised to BS EN 1461 after manufacture.
The grating is hinged on one side and provided with a padlock facility on the other The grating should be a minimum 270mm wider than the outside diameter of the pipe being used. The grating and frame can be supplied with chemical anchor fixings to fit existing outfalls or supplied fitted to our Headwall range.
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