The Yamada NDP-25BAS-PP is a durable air operated diaphragm pump designed for long flex life and dependable fluid transfer when moving water-based solutions, mild caustics, and industrial slurries. Featuring a rugged, lightweight aluminum fluid body paired with resilient Santoprene diaphragms, check balls, and o-rings, this 1-inch NPT AODD unit delivers maximum flow rates up to 46.2 GPM (174.8 L/min) at operating pressures up to 100 PSI. Driven by Yamada’s patented non-lubricated C-spool air valve encased in a chemical-resistant polypropylene center body, this Yamada AODD pump provides stall-free, freeze-resistant operation without requiring continuous air lubrication. Its leak-resistant bolted casing, threaded 1-inch NPT ports, and externally accessible air motor make online inspection and servicing fast and simple—delivering a cost-effective fluid handling solution for industrial maintenance, water treatment, and general manufacturing.
