In the suction seat at the bottom of the single-tube sprayer, there is an inlet valve. On the outer wall of the inner tube of the air chamber, there is a water outlet valve. There are copper balls in both valves. During work, due to pressure changes, the copper ball jumps up and down to open and close the valve to control the flow of the liquid medicine.

When the plug rod rises, the space in the barrel tube suddenly increases, thus forming a partial vacuum. Under the action of atmospheric pressure, the liquid medicine rushes through the copper ball in the inlet valve and enters the barrel tube. When the plug rod is pressed down, the copper ball in the inlet valve closes the inlet hole. The liquid medicine that has entered the barrel can only flow from the upper part of the barrel through the hole of the outlet valve, push the copper ball in the outlet valve, and enter the air chamber. The liquid medicine gradually increases, compressing the air in the air chamber to generate pressure. The greater the compression ratio, the greater the pressure generated.

The pressurized liquid medicine enters the nozzle vortex chamber through the pipe (hose, spray rod, etc.) through the outlet connector and enters the nozzle vortex chamber to swirl at high speed, resulting in a vortex. Due to the centrifugal effect of the vortex and the difference in pressure between the inside and outside of the nozzle, the liquid medicine will form a mist after passing through the nozzle.