Abstract: An armature moves in a first and a second direction for causing a needle valve to contact and separate from a valve seat. A stop is situated to provide a motion stop in at least the first direction. Damping is provided for damping the motion of the armature by dissipating energy from a collision of the armature with the stop. The energy dissipation is accomplished by using a spring or washer to hold the needle valve against the valve seat to prevent unwanted fuel seepage to an engine.