ARO
ARO 666100-122-C — 1" Aluminum Diaphragm Pump, Nitrile Diaphragm
ARO 666100-122-C — 1" Aluminum Diaphragm Pump, Nitrile Diaphragm
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The ARO 666100-122-C is a 1" air-operated double-diaphragm (AODD) pump from ARO's Pro Series 1" metallic line — self-priming, run-dry capable, and rated to about 35 GPM on compressed air up to 120 psi.
This build pairs Aluminum fluid caps and manifold with Aluminum seats, Nitrile check balls and Nitrile diaphragms. Nitrile (Buna-N) is the standard choice for petroleum-based fluids — fuels, diesel, motor and hydraulic oils, and many solvents. 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 | 666100-122-C |
| Pump type | Air-operated double diaphragm (AODD) |
| Port / inlet size | 1 in |
| Max flow | 35 GPM (133 LPM) |
| Max fluid pressure | 120 psi (8.3 bar) |
| Max air inlet pressure | 120 psi (8.3 bar) |
| Solids handling | 1/8 in (3.2 mm) |
| Diaphragm material | Nitrile |
| Ball (check valve) material | Nitrile |
| Seat material | Aluminum |
| Fluid caps & manifold | Aluminum |
| Max fluid temperature | Up to 180°F (82°C) — limited by the nitrile wetted path |
| Sound level | ~64.5 dB(A) |
| Weight | ~19 lb (8.6 kg) |
| Displacement | 0.16 gal (0.60 L) per cycle |
Datasheet: ARO 66610X-X-C — Operator's Manual & Specifications (PDF)
Browse all air-operated diaphragm pumps, or all pumps, at KAD.
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