Yamada
Yamada NDP-50BVT-PP — 2" Kynar PVDF Diaphragm Pump, PTFE Diaphragm
Yamada NDP-50BVT-PP — 2" Kynar PVDF Diaphragm Pump, PTFE Diaphragm
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The NDP-50BVT-PP covers 2" transfer duty as an air-operated double-diaphragm pump in kynar pvdf, rated to 164 GPM. It passes solids to 5/16" (8 mm) and handles fluid to 212°F (100°C).
PVDF construction handles the aggressive oxidising chemistry — chlorine, bromine, strong mineral acids — where polypropylene reaches its limit. 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.
The non-metallic center body and glass-filled polypropylene air motor cut weight and remove a corrosion path in wet or chemically aggressive areas. 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-50BVT-PP |
| Yamada item no. | 854850 |
| Pump type | Air-operated double-diaphragm (AODD) |
| Series | NDP-50 |
| Port size | 2" |
| Maximum flow | 164 GPM |
| Air supply pressure | 20-100 PSI |
| Maximum fluid discharge pressure | Same as max air supply (1:1 pump) |
| Maximum solids | 5/16" (8 mm) |
| Displacement per cycle | Rubber 1.12 gal (4.25 L) |
| Maximum dry suction lift | 19 ft |
| Maximum fluid temperature | 212°F (100°C) |
| Check valve type | Ball valve |
| Body / wetted materials | Kynar (PVDF) |
| Diaphragm material | PTFE |
| Ball material | PTFE |
| Air motor | Glass-filled polypropylene (non-metallic center body) |
| Air inlet | 3/4” Female NPT |
| Air exhaust | 1” Female NPT |
| Options | Glass-filled polypropylene air motor / non-metallic center body |
| Repair kit | K50-VT |
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