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H 90 mm, Manholes range, Manholes, Canali grigliati tecnici e strutture in acciaio inox, griglie per canali, recinzioni e cancelli, bocche di lupo, zerbini, pilette e chiusini

H 90 mm

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WATER/AIRTIGHT MANHOLES H 90 mm

Key, the only water/airtight manhole covers, is one of the most sophisticated and technologically advanced in the Gridiron range.
Very thick, hot-dip galvanised, these are the ideal solution for resolving problems of smells and infiltration of water.
The special manhole cover Key consists of a frame in press-moulded sheet metal designed to hold the special O-RING seal, together with an internal sump with tabs for attaching in the corners to ensure a firm bond and perfect fit between cover and frame.
This particular method of bolting squeezes the seal to make it perfectly air and watertight.
A kit is also provided with two handles of different lengths to help with lifting when installing the manhole on site; the longer handle is also used for releasing the manhole for inspection purposes.
The bolts are fully tightened by an Allen key.

 

 

 


KEY MANHOLE

 

CODE
EXTERNAL SIZE mm NET SPAN
DEPTH
WEIGHT  kg
7101 430x430 h90 290x290 20/10 9,99
7102 530x530 h90 390x390 20/10 13,10
7103 630x630 h90 490x490 20/10 16,72
7104 730x730 h90 590x590 20/10 20,36
7105 830x830 h90 690x690 20/10 26,36