Yamada NDP-25 Series 1-Inch Double Diaphragm Pumps

All Yamada NDP-25 series, 1-inch, air-powered, double diaphragm pumps feature bolted construction, which eliminates leaks and simplifies post-maintenance reassembly. Since the air valve is accessible from the outside, the Yamada pumps can remain in operation during inspections and valve maintenance. These self-priming pumps allow for high suction lift and may be easily adjusted to suit a wide range of pumping applications. Designed to eliminate rotors, gears, pistons and other wear parts, these Yamada pumps perform with extended life with low maintenance.


Description: Yamada 3/4-inch, air-operated, double-diaphragm (AODD) pumps handle a wide variety of fluids with a high or low solids content for smooth, consistent, efficient pumping. Flow rate to 46.2 GPM max, 1-inch FNPT port size, 3/8 in. FNPT air inlet. Choose polypropylene, aluminum, stainless steel, cast iron or PVDF for the pump body material, ball valves as standard. Choose the diaphragm material based on the maximum liquid temperature:
Neoprene to 180 degrees F
Buna 180
PTFE 212
Nordel 212
Santoprene 225
Hytrel 248
Viton 248
Call or chat for free guidance!
Notes: 1-inch inlet and discharge, available in a variety of material combinations
Lead Time: 1-2 weeks from CT. For emergencies, please call us at 203-740-1877.

Choose by Model Number

Or Choose By Specifications

  • Available
  • Selected
  • Unavailable with Selected


Specifications ball valves, buna diaphragms ball valves, hytrel diaphragms ball valves, neoprene diaphragms ball valves, nordel diaphragms ball valves, ptfe diaphragms ball valves, santoprene diaphragms ball valves, viton diaphragms
Flow Details 46.2 gpm max 1 in fnpt port size 3/8 in fnpt air inlet
Material aluminum cast iron polypropylene pvdf stainless steel
Clear selection
Clear selection
Reset Selections