Razpršilniki Trigger Sprayers so izjemno preprosti za oblikovanje in se zanašajo na le nekaj elementov, da dosežejo svoj cilj pršenja tekočine skozi steklenico. Ko ročico sprožilca potegnete z nekaj prsti, aktivira se majhna črpalka. Črpalka črpa tekočino iz rezervoarja plastenke skozi plastično cev. Tekočina se potisne skozi ozek sod in iz majhne luknje do pršilnega ventila.
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.
