The hand pumps use with herbicides, insecticides, fungicides or fertilizer. For mounting on barrels or trucks or any place fluids need to be dispersed. Roller pumps are the number on all-round choice by farmers throughout the world. The rollers revolve inside the pump housing to force the spray solution through the outlet to the nozzle. Roller pumps have a low initial cost and are extremely versatile.
Roller pumps are self-priming and easily adapt to PTO or gas engine drives.
Piston pumps are not unlike an engine. On the down-stoke, the inlet valve opens., filling the chamber with solution. On the up stoke, the outlet valve opens, and the piston forces the solution to the nozzle. The replaceable piston cups can be of leather, fabric or Buna-N rubber, depending on the type of solution to be sprayed. They can be driven by PTO, gas engine or electric motor.