Yamada
Yamada NDP-15BST — 1/2" Stainless Steel Diaphragm Pump, PTFE Diaphragm
Yamada NDP-15BST — 1/2" Stainless Steel Diaphragm Pump, PTFE Diaphragm
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Yamada's NDP-15BST is a 1/2" AODD pump in stainless steel, moving up to 13.5 GPM. It passes solids to 1/32" (1 mm) and handles fluid to 212°F (100°C).
316 stainless construction is specified where corrosion resistance and cleanability both matter — dairy, brewing, fine chemicals and pharmaceutical transfer. PTFE diaphragms and balls give near-universal chemical resistance, covering solvents, concentrated acids and oxidizers that destroy rubber elastomers, at the cost of a slightly lower displacement per stroke. Ball check valves are the right choice for flooded-suction installations.
It runs on plant air with no electrical supply at the pump, self-primes, and will sit stalled against a closed discharge without damage — useful on intermittent or dead-headed duty.
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-15BST |
| Yamada item no. | 851961 |
| Pump type | Air-operated double-diaphragm (AODD) |
| Series | NDP-15 |
| Port size | 1/2" |
| Maximum flow | 13.5 GPM |
| Air supply pressure | 20-100 PSI |
| Maximum fluid discharge pressure | Same as max air supply (1:1 pump) |
| Maximum solids | 1/32" (1 mm) |
| Displacement per cycle | 0.0338 gal (128 cc) |
| Maximum dry suction lift | 8 ft (flat check valve) |
| Maximum fluid temperature | 212°F (100°C) |
| Check valve type | Ball valve |
| Body / wetted materials | Stainless Steel (316) |
| Diaphragm material | PTFE |
| Ball material | PTFE |
| Air motor | Standard |
| Air inlet | 1/4" Female NPT |
| Air exhaust | 3/8" Female NPT |
| Repair kit | K15-MT |
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