Nozzles for pulse spray are designed to provide a different capability than nozzles for continuous spray. The non-return valve is located at the tip of the nozzle to prevent oil dripping - critical in some applications. This is especially critical when the spray direction is vertical or pointing downward.
Type TPN Spray Nozzle for Assembly & Slow-moving Chains
Type TFN Spray Nozzle for Bore Lubrication & General Assembly
Type TCN Spray Nozzle for Engine & General Assembly