Abstract: A float controlled valve for controlling the flow of a pressurized water supply to a cistern, is of the kind having a flexible diaphragm dividing a valve housing into an inlet chamber and a back-pressure chamber, the pressurized supply acting on both sides of the diaphragm to maintain the valve closed. A float controlled pilot valve is pivotally connected to the valve housing and is operable by the float to relieve the pressure in the back pressure chamber. The float operated pilot valve has an actuating lever which is pivoted at one end to the valve housing and carries the float at its other end, the lever being shaped to extend from its float-carrying end up one side of the valve housing and over the top of the valve housing to its pivotal connection at the opposite side of the valve housing.