Solo 473-ECS 3-Gallon Backpack Sprayer, Diaphragm Pump for Bleach & Wettable Powders This full-featured sprayer in an economical package is perfect for homeowners and use for general-purpose spraying, gardening applications and pest control. 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. Diaphragm is made of top quality Tivilon material to provide outstanding resistance to harsh chemicals. Interchangeable pump handle for left or right-hand operation and 48 nylon-reinforced high-pressure hose for extended reach. Spray nozzle adjustable from jet stream to fine mist for multiple spraying tasks.