Back pack sprayer has 4'' wide opening for ease of use and cleaning. Poly shut off. Pressure control 15 to 60 P.S.I. Adjustable cone or fan nozzle. Also contains a brass nozzle. Chapin Professional 4-gallon backpack poly sprayer hands free sprayer for large jobs 4-inch wide opening with poly shut-off and adjustable cone and fan nozzle Internal 4 position spray valve for expert pressure control fro
