The Chapin 6-4609 Sprayer Pump Assembly generates the pressure needed to move liquid through a compatible sprayer system. It helps draw liquid from the tank and deliver it through the sprayer's hose and nozzle during operation. Proper pump function supports consistent liquid flow and effective spraying. Replacing a worn or damaged pump assembly can help restore pressure generation and... https://www.wholetoolbox.com/chapin-6-4609-sprayer-pump-assembly/6-4609.html