Solo 473-diaphragm Pump 3-Gallon Professional Backpack Sprayer, for Bleach & Wettable Powders, Ergonomic Design Easily and effectively handles disinfectants, bleach solutions, fertilizers, herbicides, pesticides and formulations for tree, shrub and plant protection. High-performance diaphragm pump for use with wettable powders, liquid and bleach solutions. Passes small abrasive particles without damage to the pump assembly. Produces pressure of up to 60 psi. Viton seals in key locations ensure long service and durability. Interchangeable pump handle for left or right-hand operation and 48 nylon-reinforced high-pressure hose for extended reach. Four-nozzle assortment for multiple spraying tasks: adjustable, fan spray, hollow cone, and jet stream nozzles. TeeJet compatible.