The Yamada NDP-25BAE is a high-performance 1-inch air operated diaphragm pump engineered for wastewater treatment, caustic chemical handling, hot water transfer, and general industrial processing. Combining a rugged aluminum wetted body, chemical-resistant EPDM diaphragms, and an aluminum center section, this heavy-duty Yamada AODD pump offers exceptional weatherability, chemical resistance, and stall-free operation at flow rates up to 46.2 GPM. Built with Yamada’s signature leak-free bolted construction, this reliable 1" NPT AODD pump eliminates the reassembly misalignments and fluid leakage common to standard clamp-band units. Its patented, non-lubricated C-spool air valve design features an externally accessible air motor, enabling quick, in-line maintenance without removing the pump from service—minimizing downtime and lowering total cost of ownership.
