Airless spray nozzle with magnetically actuated shut-off valve

摘要

A spray device is provided that includes a body portion having a fluid passageway therein. A spray nozzle is affixed to the body portion. The spray nozzle includes a discharge orifice for directing fluid from the fluid passageway in the body portion in a predetermined spray pattern. A valve needle is supported in the body portion and spray nozzle for movement between an open position for permitting fluid discharge through the discharge orifice and a closed position for preventing fluid discharge through the discharge orifice. A control piston assembly is provided for controlling movement of the valve needle. The control piston assembly is movably supported in the body portion and is non-mechanically coupled to the valve needle by magnetic attraction.