The CHAPIN ProSeries backpack sprayer is ideal for the landscape and turf professional but easily used by the homeowner too. The 4 gal poly tank has a 4 in wide mouth opening for easy filling and cleaning and a diaphragm pump that works well with wettable powders. Featuring a three-stage filtration system to prevent clogging, a translucent poly tank for viewing of fluid level, poly wand, cushion grip poly shut-off, brass nozzle and padded shoulder straps. Comes with a three-piece nozzle kit. Viton seals provide compatibility with fertilizers, weed killers and pesticides.