The SHURFLO 1.8 GPM 12V DIAPHRAGM PUMP with ON-OFF SWITCH delivers consistent liquid delivery on various spot and agricultural sprayer applications. Built with spherically shaped valves and automatic demand switch this pump delivers up to 1.8 GPM and a max of 50 PSI. The internally chemically resistant materials make this pump compatible with any agricultural chemicals such as fertilizers, insecticides, pesticides, deicers, and herbicides. Made to be mounted in any position and designed for easy maintenance. Built-in check valve prevents back flow of fluid and an incorporated demand switch powers the pump on and off automatically.