Megaflow valves are a High Flow compact robust constructed float operated valve ideal for automatic filling of water tanks. The valve is configured for underwater mounting only. Megaflow is a good choice where its high flow, compact, robust, non-corrosive construction is beneficial. The float is connected to the valve with a nylon cord, this operates a pilot valve, when the water level drops, the pilot valve is opened and the main diaphragm valve is activated. | Jobe Megaflow Valve 1" with DLT