Yamada
Yamada NDP-20BAN — 3/4" Aluminum Diaphragm Pump, Buna-N Diaphragm
Yamada NDP-20BAN — 3/4" Aluminum Diaphragm Pump, Buna-N Diaphragm
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The Yamada NDP-20BAN is a 3/4" air-operated double-diaphragm pump in aluminum, rated to 31.7 GPM. It passes solids to 1/16" (2.0 mm) and handles fluid to 180°F (82°C).
An aluminum wetted path is the workhorse choice for petroleum products, inks, adhesives and machine coolant, giving metal durability without the cost of 316. 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.
Being air-driven, it needs no motor starter or electrical classification at the pump, self-primes from dry, and can be dead-headed and left stalled under pressure.
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-20BAN |
| Yamada item no. | 851515 |
| Pump type | Air-operated double-diaphragm (AODD) |
| Series | NDP-20 |
| Port size | 3/4" |
| Maximum flow | 31.7 GPM |
| Air supply pressure | 20-100 PSI |
| Maximum fluid discharge pressure | Same as max air supply (1:1 pump) |
| Maximum solids | 1/16" (2.0 mm) |
| Displacement per cycle | Rubber 0.163 gal (615 cc) / PTFE 0.143 gal (539 cc) |
| Maximum dry suction lift | 18 ft |
| Maximum fluid temperature | 180°F (82°C) |
| Check valve type | Ball valve |
| Body / wetted materials | Aluminum (ADC-12) |
| Diaphragm material | Buna-N (NBR) |
| Ball material | Buna-N (NBR) |
| Air motor | Standard |
| Air inlet | 1/4" Female NPT |
| Air exhaust | 3/4" Female NPT |
| Repair kit | K20-MN-1 |
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