The Milwaukee® SWITCH TANK™ 4 Gallon sprayer tank assembly is an interchangeable tank powered by the M18™ SWITCH TANK™ powered base (not included). The sprayer tank assembly includes the pump, hose, and wand. The design allows tank assembles to be added for different spraying applications, eliminating cross-chemical contamination. It also enables the tank assembly to be replaced at a lower cost of ownership compared to replacing an entire sprayer. The 4 Gallon sprayer tank assembly has a dual diaphragm pump for longer pump life and Viton® seals for increased durability against harsh chemicals. The sprayer tank also has a wide mouth opening for easier pouring and a strainer that filters debris from getting into the tank.