The Ortho Manual Pump Backpack Sprayers does the work of both a piston and diaphragm backpack sprayer. The exclusive internal No Leak Pump keeps your back and clothing dry. The paddles keep liquids, powders and water-soluble solutions mixed, in solution and ready to spray. The premium shut-off offers a comfort grip, lockable trigger to prevent hand fatigue and a removable in-line filter to reduce clogging. The Ortho Backpack Sprayer is capable of spraying up to 150 PSI for those hard-to-reach areas. The foldable pump handle reverses for left- or right-handed use and the tank has a built-in carry handle with wand storage. With adjustable padded straps, waist belt and chest cinch strap, the backpack ensures comfort while you work. Multiple nozzles are included for ultimate versatility: Brass adjustable nozzle (enables stream to cone patterns), wide flat fan nozzle (red, 0.25 GPM, angled at 70degrees) and a narrow flat fan nozzle (yellow, 0.15 GPM, angled at 30 degrees).