20L high pressure knapsack spraying machine

A pressure knapsack spraying machine is a portable device used for applying liquid pesticides, herbicides, fertilizers, or other chemicals to plants or surfaces. It consists of a tank to hold the liquid, a pump to create pressure, a hose for directing the spray, and a nozzle for controlling the spray pattern.

Here’s how it generally works:

1. Filling the Tank: The tank is filled with the liquid to be sprayed, such as pesticide mixed with water
2. Pumping: The operator pumps the handle to pressurize the tank. This builds up pressure inside the tank, which forces the liquid out when the nozzle is opened.
3. Spraying: The operator adjusts the nozzle to control the spray pattern (such as mist or stream) and direction. By opening the nozzle, the pressurized liquid is sprayed onto the target plants or surfaces.
4. Refilling and Repeating: When the tank is empty, the operator refills it with more liquid and repeats the process as needed until the spraying is complete.

Pressure knapsack sprayers are commonly used in agriculture, horticulture, gardening, and pest control because of their portability and effectiveness in applying chemicals evenly over large areas. Proper safety precautions should be taken when using these machines to protect the operator and the environment from exposure to potentially harmful chemicals.