Common uses for sprayer pumps include insect and weed control in agricultural applications, industrial-strength paint sprayers that deliver large volumes of liquid over a particular area and high-pressure applications that deliver liquids to hard-to-reach places. Sprayer pumps come in four basic varieties such as roller, centrifugal, piston and diaphragm pumps. Different types of sprayer pumps transfer different kinds of liquids, including clear liquids, abrasives and solid-laden liquids.
Motor-driven diaphragm sprayer pumps can deliver liquids at 1,000 pounds per square inch or more for some applications. These sprayers also deliver high volumes of liquids, up to 50 gallons per minute or more, depending on the size of the sprayer pump. Diaphragm pumps come in many sizes, depending on how much liquid someone needs to distribute.
Piston pumps help paint sprayers deliver product to surfaces. For example, when a piston moves down, an inlet tube fills the piston chamber with fluid. When the piston moves up, the fluid distributes to another part of the system such as a nozzle or tube. The back-and-forth motion of the piston in rapid succession delivers paint at a steady stream as a motor drives the piston. Rubber and plastic seals prevent air from getting into the piston pump system.
Centrifugal pumps use hydraulic motion to deliver liquids at specific pressures. These systems work to move hydraulic oil in tubes; in turn, these tubes move heavy pieces of equipment. Centrifugal pumps typically last a long time compared to other types.