ARO
ARO 66605K-444 — 1/2" Kynar PVDF Diaphragm Pump, PTFE Diaphragm
ARO 66605K-444 — 1/2" Kynar PVDF Diaphragm Pump, PTFE Diaphragm
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The ARO 66605K-444 is a 1/2" air-operated double-diaphragm (AODD) pump from ARO's Classic-style 1/2" non-metallic compact series — self-priming, run-dry capable, and rated to about 13 GPM on compressed air up to 100 psi.
This build pairs Kynar PVDF fluid caps and manifold with Kynar PVDF seats, PTFE check balls and PTFE / Santoprene diaphragms. PTFE gives the broadest chemical compatibility in the line — the build to reach for with corrosive acids, caustics and solvents that attack rubber elastomers. Bolted construction keeps the fluid path leak-tight, and ARO's patented unbalanced air valve is designed to resist stalling and ice-up.
It is a sensible fit for general transfer in water treatment, wastewater, chemical feed and industrial maintenance. Not sure this build suits your fluid? Send us your application details and we'll point you to the right part number.
KAD is a Texas-based seller — order online, ship from the US with a short lead time, and reach US-based support if you have a sizing or compatibility question before you buy.
Specifications
| Brand | ARO (Ingersoll Rand) |
| Model / MPN | 66605K-444 |
| Pump type | Air-operated double diaphragm (AODD) |
| Port / inlet size | 1/2 in |
| Max flow | 13 GPM (49.2 LPM) |
| Max fluid pressure | 100 psi (6.9 bar) |
| Max air inlet pressure | 100 psi (6.9 bar) |
| Solids handling | 3/32 in (2.4 mm) |
| Diaphragm material | PTFE / Santoprene |
| Ball (check valve) material | PTFE |
| Seat material | Kynar PVDF |
| Fluid caps & manifold | Kynar PVDF |
| Max fluid temperature | Up to 200°F (93°C) — limited by the Kynar PVDF wetted path |
| Sound level | ~71.1 dB(A) |
| Weight | ~9.5 lb (4.3 kg) |
| Displacement | 0.04 gal (0.15 L) per cycle |
Datasheet: ARO 66605X-XXX — Sales & Engineering Data (PDF)
Browse all air-operated diaphragm pumps, or all pumps, at KAD.
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