Yamada
Yamada NDP-500BST — 2" Stainless Steel Diaphragm Pump, PTFE Diaphragm
Yamada NDP-500BST — 2" Stainless Steel Diaphragm Pump, PTFE Diaphragm
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Yamada's NDP-500BST is a 2" AODD pump in stainless steel, moving up to 226 GPM. It passes solids to 5/16" (8 mm) and handles fluid to 212°F (100°C).
A 316 stainless wetted path resists chlorides, organic acids and most process chemicals, and is the standard specification wherever wash-down or product purity matters. 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.
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.
We ship from Texas, quote honest lead times and price sharply. Tell us the fluid, temperature and flow you need and we will confirm the right configuration before you order.
| Brand | Yamada |
|---|---|
| Model / MPN | NDP-500BST |
| Yamada item no. | 855393 |
| Pump type | Air-operated double-diaphragm (AODD) |
| Series | NDP-500 |
| Port size | 2" |
| Maximum flow | 226 GPM |
| Air supply pressure | 20-125 PSI |
| Maximum fluid discharge pressure | Same as max air supply (1:1 pump) |
| Maximum solids | 5/16" (8 mm) |
| Displacement per cycle | Rubber 1.14 gal / Thermoplastic 1.22 gal / PTFE 0.70 gal |
| Maximum dry suction lift | 18 ft |
| 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 | 3/4” Female NPT |
| Air exhaust | 1” Female NPT |
| Repair kit | K50-MT |
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