Types of Sprayer Pumps
As you look at all of the Agricultural Sprayer Pump available, consider a handful of types of pumps.

As you do that, consider the varying methods of energizing the pumps. Do you want an electric sprayer pump? A gas-powered pump? Do you need a PTO?

This guide will help you determine the best pump for your particular needs.

Centrifugal Pump
Pumps come in two different basic categories: positive displacement and non-positive displacement.

As a kinetic pump, the centrifugal pump qualifies under the positive displacement category.

This pump has a shaft-driven impeller that rotates inside the casing. The impeller is a hydraulic component that rotates and adds velocity to pumped liquid

Picture a boat with its propeller. Now imagine that boat is going nowhere--it is stuck on something or anchored, and the propeller is still on. Water will run through the propeller and gain velocity because of the prop.

The impeller works the exact same way.

The impeller pulls water in and then increases its velocity depending on the speed of the impeller.

As a result, the centrifugal pump can provide some extremely high flow rates.

Additionally, again, much like a boat propeller, the impeller can be controlled by a throttle. The centrifugal pump has a throttle which can thus control the flow rate.

Unlike self-primed pumps, the centrifugal pumps must be primed.

Centrifugal Pump Energy Source
You can power a centrifugal pump in a few different ways.

gear drive and belt/pulley PTO 540 rpm
gear drive and belt /pulley PTO 1000 rpm
belt/Pulley gas engine
direct couple
belt/pulley electric motor
As you can see, the Backpack Sprayer Manufacturers’s centrifugal pump uses a variety of energy sources from the PTO to an electric motor.