- for sewage-free wastewater, made of plastic, for installation in an exposed wastewater pipe, with protective hood
- With two self-closing flaps, one of which can be locked by hand as an emergency closure
- Base body with minimal natural incline of 9 mm, inlet with socket, outlet with spigot end for direct connection to plastic piping systems (connection of other external diameters and pipe materials with adapters from the system manufacturer)
- Backwater double valve: Staufix SWA
- Standard: DIN EN 13564 Type 2
- Housing: black
- Nominal diameter: connection pipes must be purchased separately
- Installation type: exposed sewer pipe
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