Pass-through unit 315x160 with a backwater valve for a DN 315mm corrugated rising pipe (outer diameter of the 355mm pipe) K35P16ZB

The backwater valve is intended for use in a sanitary or rainwater drainage system. The recommended installation location is the house drain pipe between the building and the main network. The well with a wallet with a backwater valve serves as an inspection chamber, at the same time protecting the building against flooding.