Abstract: A fluid dispenser valve for mounting on a neck of a reservoir containing fluid, the valve having a valve body including a metering chamber, and a valve member that is movable in the metering chamber between a rest position and a dispensing position. The metering chamber includes an upper gasket and a lower gasket that co-operate in leaktight manner with the valve member. The valve includes a neck gasket that co-operates in leaktight manner with the valve body and with the receptacle neck, the valve body being made as a single piece. The neck gasket and said lower gasket are overmolded on the single-piece valve body.