Abstract: A hand-operated sprayer has a spray head for attachment to a container for liquid. The spray head includes a manually-operable valve for controlling the discharge of liquid from an inlet in the head to a discharge nozzle. The sprayer includes a spring urging the valve into a closed position and a manually-operable member mounted on the head, which can be moved against the spring-loading to urge the valve into an open position. The valve comprises a spool having a passage providing communication between the inlet and the discharge nozzle, and the spray head valve spool-valve spool bore assembly has a radial inlet port located between a fixed, valve spool seating component, and an annular valve spool seal component which prevents external leakage.