Solo Diaphragm Pump Backpack Sprayer — 4-Gallon Capacity, 60 PSI

3-in-1 Solo Diaphragm Pump Backpack Sprayer handles wettable powder formulas (including sediment water and abrasives), liquid formulations and bleach solutions, thanks to a resistant Tivilon diaphragm. 4-gallon tank is made of high-density polyethylene with UV inhibitors for increased longevity.