The Solo 475 4-Gallon Diaphragm Pump Backpack Sprayer is designed to easily handle liquid formulations, including bleach, as well as powdered chemicals that have been liquefied. The pump is made of Viton, which is prized for its resistance to abrasion and wear as well as harsh chemicals, and the polyethylene tank has been treated with ultraviolet inhibitors to increase overall longevity.

High-density polyethylene tank with ultra-violet inhibitors allows for unmatched durability and ultra-violet protection. The model 475™ is capable of producing up to 60 psi, with its rugged connecting rod actuated diaphragm pump. The diaphragm is made of high-quality material for its resistance to harsh chemicals and abrasion and its long life expectancy. By design the diaphragm is able to pass small abrasive particles without damage to the pump assembly. The diaphragm pump is ideal for handling chemicals in wettable powder form, as well as liquid formulations and bleach solutions.

Download Product Manual

• Tank capacity: 4 gallons
• Tank material: High-density polyethylene, UV resistant
• Max pressure: 60 psi
• Wand: 28" poly (length includes shut-off handle)
• Hose length: 4'
• Nozzles included: Adjustable, flat, hollow cone and jet stream
• Seal material: Viton®
• Pump style: Diaphragm