ARO
ARO 6661T3-344-C — 1-1/2" Polypropylene Diaphragm Pump, PTFE Diaphragm
ARO 6661T3-344-C — 1-1/2" Polypropylene Diaphragm Pump, PTFE Diaphragm
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The ARO 6661T3-344-C is a 1-1/2" air-operated double-diaphragm (AODD) pump from ARO's Pro Series 1-1/2" non-metallic line — self-priming, run-dry capable, and rated to about 100 GPM on compressed air up to 120 psi.
This build runs an all-polypropylene wetted path — fluid caps, manifold and seats — with PTFE / Santoprene diaphragms and PTFE check balls. 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 built for higher-volume transfer, filling, recirculation and supply in chemical, industrial and water/wastewater service. 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 | 6661T3-344-C |
| Pump type | Air-operated double diaphragm (AODD) |
| Port / inlet size | 1-1/2 in (ANSI/DIN flange) |
| Max flow | 100 GPM (378.5 LPM) |
| Max fluid pressure | 120 psi (8.3 bar) |
| Max air inlet pressure | 120 psi (8.3 bar) |
| Solids handling | 1/4 in (6.4 mm) |
| Diaphragm material | PTFE / Santoprene |
| Ball (check valve) material | PTFE |
| Seat material | Polypropylene |
| Fluid caps & manifold | Polypropylene (with aluminum center section) |
| Max fluid temperature | Up to 175°F (79°C) — limited by the polypropylene wetted path |
| Sound level | ~77.7 dB(A) |
| Weight | ~62 lb (28.1 kg) |
| Displacement | 0.67 gal (2.54 L) per cycle |
Datasheet: ARO 1-1/2" Non-Metallic Diaphragm Pump — Sales & Engineering Data (PDF)
Browse all air-operated diaphragm pumps, or all pumps, at KAD.
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