Our mussel with foot valves are used on the end of the suction pipe in shallow dams or streams. The mussel prevents dirt or weed being sucked into the foot valve as well as preventing vortexing in shallow water. These are extremely popular with rural fire services around Australia for use when they need to take large volumes of water from a shallow dam or river quickly and easily. PRICE INCLUDES FREE FREIGHT TO YOUR NEAREST TNT DEPOT IN MAINLAND AUSTRALIA LOCATIONS.