Yamada
Yamada NDP-25BSS — 1" Stainless Steel Diaphragm Pump, Santoprene Diaphragm
Yamada NDP-25BSS — 1" Stainless Steel Diaphragm Pump, Santoprene Diaphragm
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The NDP-25BSS is Yamada's 1" air-operated double-diaphragm pump in stainless steel, with a 46.2 GPM maximum. It passes solids to 1/8" (3 mm) and handles fluid to 180°F (82°C).
316 stainless construction is specified where corrosion resistance and cleanability both matter — dairy, brewing, fine chemicals and pharmaceutical transfer. Santoprene diaphragms and balls offer broad chemical compatibility with a long flex life, and are usually the best value where the duty cycle is heavy. Ball check valves are the right choice for flooded-suction installations.
Air drive means no electrics at the pump, seal-less operation with nothing to leak at a shaft, and safe stalling against a closed discharge.
Ordered online, shipped from Texas, priced well and backed by US support before and after the sale. Send us your application details if you want a second opinion on materials.
| Brand | Yamada |
|---|---|
| Model / MPN | NDP-25BSS |
| Yamada item no. | 852703 |
| Pump type | Air-operated double-diaphragm (AODD) |
| Series | NDP-25 |
| Port size | 1" |
| Maximum flow | 46.2 GPM |
| Air supply pressure | 20-100 PSI |
| Maximum fluid discharge pressure | Same as max air supply (1:1 pump) |
| Maximum solids | 1/8" (3 mm) |
| Displacement per cycle | Rubber 0.22 gal (833 cc) |
| Maximum dry suction lift | 18 ft |
| Maximum fluid temperature | 180°F (82°C) |
| Check valve type | Ball valve |
| Body / wetted materials | Stainless Steel (316) |
| Diaphragm material | Santoprene (TPO) |
| Ball material | Santoprene (TPO) |
| Air motor | Standard |
| Air inlet | 3/8” Female NPT |
| Air exhaust | 3/4” Female NPT |
| Repair kit | K25-MS-1 |
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