Abstract: A trigger type head cap for an aerosol sprayer allows residual gas inside of an aerosol container of the sprayer to be easily and reliably discharged and eliminated. The cap includes a cap cover to be placed on the aerosol container, which has a stem provided on a top thereof; a tubular member that has a stem mating part to mate with the stem and ends with a jet orifice to form a flow path continuous from the stem mating part to the jet orifice in the tubular member; and a trigger lever member capable of thrusting down the stem mating part. In addition, the cap has a rotatable rotary stopper (21) to hold the stem mating part in the state that it is thrust down, and a stopper operating lever for effecting rotation of the stopper.

Abstract: A trigger type head cap for an aerosol sprayer is provided which when in discharging and eliminating a residual gas inside of an aerosol container, allows the residual gas to be easily and reliably discharged and eliminated.