Nandan’s Self-propelled and Towable Water Service Units(WSU) is an ideal choice for replenishing the drinking water supply for all types of narrow body and commuter aircraft. Nandan Self propelled WSU is built on the reliable Chassis (Commercially available) as per Customer choice, the Water service unit is designed for operations for all types of aircraft. Nandan WSUs are designed with utmost care and with an eye on aesthetics, functionality and reliability and ease of maintenance. NANDAN’s Towable WSU is compact and has a stainless steel tank mounted on a rugged four-wheel trailer with turntable steering. The front wheels are braked when the tow bar is raised and locked. Pressure relief valves protect the water pressure into the aircraft from the engine driven water pump.