ARO
ARO 66612B-2A4-C — 1" Stainless Steel Diaphragm Pump, PTFE Diaphragm
ARO 66612B-2A4-C — 1" Stainless Steel Diaphragm Pump, PTFE Diaphragm
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The ARO 66612B-2A4-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 Stainless Steel fluid caps and manifold with 316 Stainless Steel seats, Stainless Steel check balls and PTFE / Santoprene diaphragms. The air motor uses an aluminum center section. 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 | 66612B-2A4-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 | PTFE / Santoprene |
| Ball (check valve) material | Stainless Steel |
| Seat material | 316 Stainless Steel |
| Fluid caps & manifold | Stainless Steel (with aluminum center section) |
| Max fluid temperature | Up to 225°F (107°C) — limited by the PTFE wetted path |
| Sound level | ~64.5 dB(A) |
| Weight | ~36 lb (16.3 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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