Quality Heavy Duty Knapsack Sprayer (16L) - Sparex Part S.52400Quality Heavy Duty Knapsack Sprayer (16L) S. 52400 Introducing the Quality Heavy Duty Knapsack Sprayer, designed for both comfort and efficiency. This sprayer features a contoured design that ensures maximum comfort during use, making it ideal for extended periods of operation. Equipped with a built in chemical solution agitator, this sprayer guarantees thorough mixing of your solutions. The heavy duty trigger valve comes with an in line filter,