Nozzle tip with slit valve for fluid dispenser

A fluid dispenser comprising:

• a pump having a pump inlet and a pump outlet;
• a fluid reservoir coupled to the pump inlet;
• and
• an outlet valve assembly coupled to the pump outlet, said outlet valve assembly including:
• a pump tip having a first end and a second end opposite said first end and defining a conduit extending in a flow direction therebetween, said first end adapted to be coupled to the pump outlet;
• a first annular protrusion extending radially inwardly within said conduit;
• a resiliently deformable valve member received within said conduit, said valve member including a valve head portion having one or more slits defining an orifice and a peripheral valve portion bounding said valve head portion, said peripheral valve portion retained on said first annular protrusion;
• said valve head portion having a first side and a second side opposite the first side, said first side being upstream of said second side in the flow direction;
• and
• a vent-preventing member received within said conduit and which does not extend into the pump outlet, said vent-preventing member including a perforated baffle adjacent said first side of said valve head portion and an axially-extending sidewall, said axially-extending sidewall having a distal edge engaging said peripheral valve portion, the distal edge of the axially extending sidewall and the first annular protrusion cooperating to compress the peripheral valve portion;
• and
• wherein said baffle is positioned sufficiently close to said first side of said valve head portion so as to resist inward opening of said orifice during operation to prevent inward venting of ambient air during a dispensing operation, and further wherein the first side of said valve head portion is spaced apart from said baffle.