All buildings taller than 20 metres must have a dry riser and connection points within 50 metres of any point in the building. Very large buildings may therefore have multiple dry risers, each with its own inlet breeching and multiple connection points.
A standard dry riser should have the following parts:
▪ CC connector: on every hydrant valve
▪ J connector: on the breeching inlet
▪ Landing valve: at every connection point
▪ Wall cabinet: to protect the J connector
To check your dry riser in accordance with NEN 1594-2006 and guarantee that it is in a good state of repair.