The Chapin farm and field poly plus sprayer is a hand sprayer ideal for heavy-duty agricultural use and can accurately produce up to twenty gallons of pre-mixed spray. Featuring a patented Sure Spray anti-clog filter and a funnel top on the tank for easy filling, this sprayer also comes with a lock-on feature for continuous spray for convenience and fatigue reduction. An auto and manual high-pressure relief valve provides more control, and the nozzle can be adjusted to change the spray from a fine mist to a coarse stream. The tank offers a 3-gallon capacity and ergonomic handle. The poly shut-off is easy to clean and requires no tools.