The John Bean DM10E200FERH 200 Gallon Hydraulic Sprayer (Fiberglass Tank) has an adjustable relief valve that can provide anywhere between 50 and 800 PSI. To reduce pulsation, an air chamber has been installed within the discharge line. Numerous optional accessories can be obtained for this device, including spray booms, hose reels, drawbars and axle packages. The battery is not included in this piece.