All 4 Boat

With both-side brushing to connect the hose , grip for assembly on the wall and a valve. The important part for trouble-free function of the water and wc-pumping device which is assembled under the water level. On the valve head there is a valve which leads the air but when there is any liquid it is closed automatically. Under the valve head there is 1 1/4"connecting thread where you can screw the valve linkage No. 571841 so the ventilation can be assembled on outside wall.

With both-side inside thread. Aluminium handle, full permeability.

With one inside and outside thread. Full permeability.

The flow can be oriented to the left or right as you need.