Rectangular Inspection manhole cover in ductile iron EN-GJS-500-7 conforming to norm UNI EN 1563:2012
It is realized from a single cast, without gasket, its stability is guaranteed through a metal to metal coupling system. The outside edge is realized with the shape of a channel in order to obtain a system of hydraulic closure if it comes filled up with sand, tar or other materials. Externally, the outside border is flanged to optimise its hold in the cement and the insertion of anchoring bolts
IIt comes square in shape, it guarantees a good stability thanks to the height of the border and insertion depth not less than 50 mm, it comes with two dead holes, which allows the insertion of suitable handles to lift the cover (supplied on request).
All the covers are interchangeable. The upper surface is non skid and has been designed to allow the complete flow of water and avoid the formation of ice.
STANDARD EN 124 CLASSIFICATIONS AND PLACES OF EMPLOYMENT
Manhole covers, gullies and gratings can be distinguished into the following classes: A15, B125, C250, D400, E600 ed F900.
Group 4 (Class D 400 minimum), Group 3 (Class C 250 minimum) Group 2 (Class B 125 minimum)
THE APPROPRIATE LOADING CLASS CHOICE IS UP TO THE WORKS DIRECTOR. IN CASE OK DOUBT (SUCH AS PARTICULARLY INTENSE TRAFFIC OR VERY HIGH LOADS AREA), IT WOULD BE APPROPRIATE TO CHOOSE A SUPERIOR LOADING CLASS.