TX/765

Universal adapter reducing the internal diameter of DN450 and DN500 concrete wells. It constitutes as a direct support for standard 400x600 cast-iron sewage drains with mesh flanges and full-iron drains with external body plate diameter of Ø580÷750mm and 500x500 and 400x600 flangeless drains (roadway and kerb), as well as it is placed under 400x600 drains with ¾ flange (for placement near a kerb). It is installed directly on DN450 and DN500 rain water wells and/or compensation rings of T1/435, T1/500, and T2/500 series of types and on T3/425, T3/600, and T3/615 relief cones constituting as a surface finial for plastic wells. The adapter constitutes as a standard surface finial element of a DN385mm round plastic drain and acts as a relief ring supporting a 500x500 sewage drain.