Inspection manhole cover in ductile iron EN-GJS-500-7 conforming to norm UNI EN 1563:2012
Single casting frame with inverted base, provided with peripheral ramps that allow the assembling only on raised ground position respect to the road surface. The indicated ramps come shaped to facilitate the runoff of water. On each side there are holes to insert the anchoring hooks for the fixing on the structure below.
Inside the frame there is an EPDM seal which guarantees the tightness against the infiltration of the yards water.
It is hinged to the frame, it is power-assisted through n. 2 large-diameter torsion springs, so as to reduce the effort in opening and closing phases, with automatic locking system at 100°. It is supplied with a stainless steel lock, which can be handled with a special section key. In the contact area with the frame, it has a O-ring gasket made in gasoline and wear-resistant material. The surface has a non-slip grip.
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): road carriageways (including pedestrian streets), hard shoulders and parking areas for all types of road vehicles.
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.
Technical Datasheet (PDF download)