Chapin 22170XP 3-Gallon Industrial Concrete Sprayer For Curing Compounds, Form Oils, Waterproofing and Coatings, 3-Gallon (1 Sprayer/Package) 3-Gallon poly tank with wide mouth opening for easy filling and cleaning Compatible with most professional concrete chemicals, curing compounds,form oils, waterproofing and coatings 36-inch brass wand, nozzle and shut-off with Lock-on feature Pressure relief valve built into the tank Viton seals and gaskets designed for industrial and concrete chemicals