Trigger Sprayers binne ekstreem ienfâldich te ûntwerpen en fertrouwe op mar in pear eleminten om har doel te berikken fan floeistof troch de flesse te spuiten. As de trekker lever wurdt lutsen mei in pear fingers, in lytse pomp wurdt aktivearre. De pomp lûkt floeistof út it reservoir fan 'e flesse troch in plestik buis. De flüssigens wurdt twongen troch in smel barrel en út in lyts gat nei in spuitklep.
When the trigger is pulled, a small spring in the shroud compresses the fluid. The piston compresses the spring during trigger firing, and when it is released, it is pushed back out of the gasket. As the piston moves back and forth, it pushes the cylinder out, contributing to the pump cycle.
As a result of this extraction motion, the cylinder shrinks, forcing the fluid out in a one-way flow. The motion allows the process to continue without interruption as soon as the trigger is released. Design variations vary from pump to pump and delivery system to delivery system.
