This Heavy Duty line pressure sprayer is fitted with EPDM (Ethylene-Propylene-Diene) and it is ideal with glycol-based hydraulic fluids and organic and inorganic acids, detergents, solutions of sodium and potassium, oxygenated solvents (ketones and esters), and atmospheric agents. EPDM seals ensure higher compatibility with many chemical solutions such as professional detergents, liquid wax, window cleaners, and engine cleaners. The sprayer is fitted with a patented device that blocks the lever in a continuous spray position.