Smith Performance Sprayers Hose and Poly Shut-Off Kit 182886 features a shut-off including 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. Designed for Smith Performance Sprayers NL400 and NL401 4-Gallon No Leak Backpack Sprayers.