Valves

A dual flush valve arrangement for use with or in a toilet cistern, having at least two discharge conditions allowing either partial discharge or substantially full discharge of the toilet cistern, said valve arrangement comprising at least one movable valve member, movable in the lengthwise extending direction of the valve member or members between selective open positions and a closed position, said selective open positions corresponding to a partial flush and a substantially full flush position, said at least one movable valve member having a first engaging means and a second engaging means located at spaced apart positions along the length of the movable valve member or members, said first engaging means for co-operatively engaging with a first actuating member to maintain the movable valve member or members in the first of the selective discharge positions, and the second engaging means for co-operatively engaging with a second actuating member to maintain the movable valve member or members in a second of the selective discharge positions, said actuating members being mounted with respect to the movable valve member so that the actuating members act directly on the engaging means so that movement of the actuating members in a first direction to maintain the movable valve member or members in either one of the selective discharge positions is effected by operation of a first force and movement of the actuating members in a second direction to disengage the actuating members from the engaging means, thereby allowing the movable valve member or members to move to the closed position is effected by operation of a second force, wherein operation of the actuating member in the first direction results from the first force predominating, whereas operation of the valve arrangement in the second direction results from said second force predominating, such that when the at least one movable valve member is caused to move from the closed position to either one of the selected discharge positions the selected engaging means engages directly with the selected actuating member to retain the valve arrangement in the selected discharge position until operation of the actuating member under the influence of the second force returns the valve arrangement to the closed position.