Yamada
Yamada NDP-25BFS — 1" Cast Iron Diaphragm Pump, Santoprene Diaphragm
Yamada NDP-25BFS — 1" Cast Iron Diaphragm Pump, Santoprene Diaphragm
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The Yamada NDP-25BFS is a 1" air-operated double-diaphragm pump in cast iron, rated to 46.2 GPM. It passes solids to 1/8" (3 mm) and handles fluid to 180°F (82°C).
The cast iron body is built for heavy industrial duty — waste oils, sludges and abrasive slurries where mass and rigidity matter more than corrosion resistance. 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.
The pump self-primes, handles a degree of entrained air, and holds pressure when stalled, which makes it forgiving on transfer duty that starts and stops.
Shipped from Texas with short lead times and strong pricing. If you are unsure which build fits your fluid, send us the application details and we will point you at the right part number.
| Brand | Yamada |
|---|---|
| Model / MPN | NDP-25BFS |
| Yamada item no. | 852702 |
| 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 | Cast Iron (FC) |
| 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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