Surface boxes cast iron
Surface boxes are required to protect and close off the operating points of underground valves. These surface boxes are labelled to make it easier to identify which fittings belong to the gas, water, district heating and wastewater network and how they work. In addition, surface boxes are used for pipework components that are used for control and measurement purposes, for example.
Additional information can be found at the DVGW and in the DVGW regulations.
In order to recognise more quickly which road cap is the right one and which class it is, the classes are marked by colours:
 TYPE similar to DIN |
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 according to DIN |
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Variants:
 Cast iron, DIN DVGW - self-levelling and rigid = proven |
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Cast iron, TYPE similar to DIN = optimized |
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Cast iron, TYPE similar to DIN, TELSTRA XL = more edge, more grip |
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