The MILWAUKEE® M18™ SWITCH TANK™ 4-Gallon Water Supply Kit delivers the industry's first interchangeable tank design with no manual pumping. Designed to meet your water supply needs for concrete cutting and coring, this battery-powered water supply delivers instant, constant, and adjustable pressure up to 60 PSI.

The 5-mode pressure adjustment knob adjusts pressure between 20-60 PSI for ultimate control. The M18™ REDLITHIUM™ XC3.0 battery (included) provides you with up to 40 tanks of water delivery per charge. The 4-gallon water supply tank features a dual diaphragm pump for greater durability and longer pump life. The tank also has a wide mouth opening for easier pouring and a strainer that prevents debris from entering the tank. The backpack frame includes an adjustable harness and premium handle for easier carrying and storage.

The 4-Gallon Water Supply consists of two components: the M18™ SWITCH TANK™ Powered Base and the 4-Gallon Water Tank Assembly (49-16-19WS). The powered base includes the motor, battery compartment, and REDLINK™ electronics, while the interchangeable tank assembly includes the pump, 10 ft. hose, and quick-connect coupler. The isolated pump, hose, and tank allow you to add additional tanks for different applications. The M18™ Powered Base is compatible with the 4-Gallon Sprayer Tank Assembly (49-16-19PS). The M18™ SWITCH TANK™ 4-Gallon Water Supply Kit is part of the M18™ System, which is fully compatible with over 275 tools.