It protects any room on the lower levels against reverse flow water flooding.
Features two independent protection flaps that are beneficial during reverse flow because, the pressure that affects the first flap doesn't transfer to the next one immediately. This product has an innovative chrome/nickel finish that provides extra security.
This is the only model in the market equipped with two independent manual-lock levers.
To be installed in 160cm (diameter) drainage pipes.
Weight: 3.95kg.
You will enjoy a 6-year warranty in case of any manufacturing imperfection that may appear during the correct use of the product.