Chapin 22190XP 3-Gallon Industrial Poly Viton Concrete Sprayer 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