Smith Performance Sprayers Hose and Poly Shut-Off Kit 182884 is designed for 2-Gallon Poly Compression Sprayers - Smith Performance Sprayers R200 2-Gallon Sprayer, R200F 2-Gallon Foaming Sprayer, 190445 2-Gallon Deck Sprayer, and 190447 2-Gallon Bleach Sprayer. The shut-off includes a lock-on feature to reduce hand fatigue, a nickel-plated brass poppet for strength and precision, and an easy-to-clean, in-line filtration system. Filter has more surface area than leading competitors which reduces clogging and minimizes cleaning. The high grade Viton seals offer the best chemical resistance to tough chemicals.