Yamada
Yamada NDP-40BSN-NPT — 1-1/2" Stainless Steel Diaphragm Pump, Buna-N Diaphragm
Yamada NDP-40BSN-NPT — 1-1/2" Stainless Steel Diaphragm Pump, Buna-N Diaphragm
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The NDP-40BSN-NPT is Yamada's 1-1/2" air-operated double-diaphragm pump in stainless steel, with a 107 GPM maximum. It passes solids to 9/32" (7 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. Buna-N diaphragms and balls suit petroleum oils, diesel, hydraulic fluid and greases, but should be kept away from ketones and strong oxidizers. Ball check valves are the right choice for flooded-suction installations.
Supplied with NPT threaded connections. It self-primes, tolerates running dry, and stalls harmlessly against a closed valve, so it suits batching and intermittent transfer where a centrifugal pump would be a poor fit.
Texas-based, with short lead times and pricing that reflects our supply position. Not sure this is the right build? Send us the fluid and duty and we will confirm.
| Brand | Yamada |
|---|---|
| Model / MPN | NDP-40BSN-NPT |
| Yamada item no. | 852637 |
| Pump type | Air-operated double-diaphragm (AODD) |
| Series | NDP-40 |
| Port size | 1-1/2" |
| Maximum flow | 107 GPM |
| Air supply pressure | 20-100 PSI |
| Maximum fluid discharge pressure | Same as max air supply (1:1 pump) |
| Maximum solids | 9/32" (7 mm) |
| Displacement per cycle | Rubber 0.73 gal (2.74 L) |
| 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 | Buna-N (NBR) |
| Ball material | Buna-N (NBR) |
| Air motor | Standard |
| Air inlet | 1/2" Female NPT |
| Air exhaust | 1" Female NPT |
| Options | NPT connection |
| Repair kit | K40-MN |
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