The SHURflo 2.1 8007-594-838 Pump (2.1 GPM 100 PSI with switch) provides consistent liquid delivery for various spot and agricultural sprayer applications. Because it is made with chemical-resistant materials, this pump is compatible with any agricultural chemicals including insecticides, fertilizers, de-icers, and herbicides. Designed for easy maintenance and may be mounted in any position. The built-in check valve prevents any backflow. The incorporated demand switch powers the pump on and off automatically.