Yamada
Yamada NDP-5FPT-O — 1/4" Polypropylene Diaphragm Pump, PTFE Diaphragm
Yamada NDP-5FPT-O — 1/4" Polypropylene Diaphragm Pump, PTFE Diaphragm
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The Yamada NDP-5FPT-O is a 1/4" air-operated double-diaphragm pump in polypropylene, rated to 3.4 GPM. It handles fluid to 180°F (82°C).
Polypropylene construction gives broad resistance to inorganic acids and caustics at a lower cost than fluoropolymer, and it stays inert in the salt and chlorine service that corrodes metal pumps. 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. Flat check valves are the right choice where the pump has to lift liquid rather than being fed by gravity.
The split discharge manifold routes output to two separate lines. The pump self-primes, handles a degree of entrained air, and holds pressure when stalled, which makes it forgiving on transfer duty that starts and stops.
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-5FPT-O |
| Yamada item no. | 851562-O |
| Pump type | Air-operated double-diaphragm (AODD) |
| Series | NDP-5 |
| Port size | 1/4" |
| Maximum flow | 3.4 GPM |
| Air supply pressure | 20-100 PSI |
| Maximum fluid discharge pressure | Same as max air supply (1:1 pump) |
| Displacement per cycle | 0.0078 gal (29 cc) |
| Maximum dry suction lift | 5 ft |
| Maximum fluid temperature | 180°F (82°C) |
| Check valve type | Flat valve |
| Body / wetted materials | Polypropylene (PPG) |
| Diaphragm material | PTFE |
| Ball material | PTFE |
| Air motor | Standard |
| Air inlet | 1/4” Female NPT |
| Air exhaust | 3/8” Female NPT |
| Options | Split discharge manifold |
| Repair kit | K5-PT-2 |
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