Chapin International 22090XP Poly Heavy-Duty Sprayer for Solvents 3-Gallon poly tank with wide mouth opening for easy filling and cleaning Shut-off has Lock-on feature for continuous spraying 18-inch brass wand and fan-tip brass nozzle Pressure relief valve built into the tank Nitrile seals for flexibility with common solvents, fertilizers, weed killers and pesticides (check chemical manufacturers instructions)