Accumulator sprayer

An accumulator sprayer comprising a cylinder body portion having a main cylinder portion and a sub-cylinder portion, and a cover portion attached to cover the cylinder body portion, wherein

• the accumulator sprayer is attached to a container to suck up liquid in the container to the main cylinder portion via a first valve, apply pressure to the liquid in the main cylinder portion, and spray the liquid from a nozzle portion via a valve structure when a pressure exceeds a certain pressure, and
• the valve structure is mounted between a lower support portion of the sub-cylinder portion and an upper support portion of the cover portion, and
• a length L1 of the valve structure in unloaded state and a shortest distance L2 between the lower support portion and the upper support portion satisfy the relational expression L1<L2,
• wherein the valve structure is composed of a reverse-dome-shaped spring portion and a valve piston portion hanging down from the spring portion, and
• the valve piston portion is composed of a core rod portion, an outer skirt portion extending downward from the outer circumference of the core rod portion, and an inner skirt portion longer than the outer skirt portion.