Multitube one-way flap valves
Range of one-way flap valves for preventing the backflow of water into pipes or outlets.
These polyester flap valves "Multitube" are lighter than standard flap valves yet much tougher than valves made from the likes of PVC. They come in nominal diameters from 100mm to 1500mm and in pipe outlet, wall oulet, or in line versions. They are ideal for sewage disposal, rainwater, surface water, and seawater.
Help: how to choose the right model of Multitube flap valve