EFFICIENT AIR AND WATER FLUSHING: The Mityvac MV4570 combines water with compressed air to effectively flush out cooling systems, clearing debris and contaminants without harsh chemicals or solvents ADJUSTABLE FLOW CONTROL: With a variable-control water valve, you can easily adjust water flow from minimal to full blast, providing precise control to match the requirements of each flushing job WIDE NOZZLE COMPATIBILITY: The stepped-up nozzle fits hoses from 3/4 to 2 inches in diameter, making this flusher versatile for different cooling system configurations, from light-duty vehicles to heavy-duty applications COMFORTABLE LEVER-ACTION AIR THROTTLE: The easy-to-use lever-action throttle includes a lock-on latch, allowing for continuous flushing without hand fatigue, making extended use more comfortable and efficient DURABLE, HIGH-IMPACT CONSTRUCTION: Built to withstand rugged conditions, the MV4570 features corrosion-resistant materials and operates at 85-150 PSI, ensuring reliable, long-lasting performance in demanding automotive and industrial environments