ODOUR BARRIER UNIDRAIN 1820 FOR LINE DRAIN OUTLET

Mechanical vent lock that opens due to water pressure and remains closed when no water flows into the well. Can be removed and cleaned. VA-approved. - Not recommended for apartment buildings - The vent lock may react to over- or underpressure in the drainage system - Correct pipe pressure is crucial for the vent lock's operation - The vent lock opens and closes via a spring - A rubber seal ensures the vent lock remains sealed whenever the shower is not in use - There is no water in the vent lock This product description is an automated translation of the original Finnish description.