Collar PP dn 425x315mm with gaskets 425 and 315, orange (Diamir 425NW well) 2569250090

Diamir sewage manholes are intended for the construction of gravity sewage systems (sanitary, rainwater, combined, industrial) and drainage. The series of types includes three types of chambers: 1. non-hatch inspection chambers - allowing access to the rainwater or sanitary sewage system using inspection or cleaning equipment, 2. manhole inspection chambers - allowing personnel access to the rainwater or sanitary sewage system, 3rd well with a sedimentation basin -used in rainwater drainage (rain inlets) and drainage, in the case of using "blind" kinets, the wells are used, for example, as reservoirs or sewage pumping stations.