666111-244-C ARO 1" Stainless Steel Metallic Pro Series Air Operated Double Diaphragm Pump
ARO
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ARO
666111-244-C ARO 1" Stainless Steel Metallic Pro Series Air Operated Double Diaphragm Pump
P/N 666111-244-C ARO 1" Stainless Steel Metallic Pro Series Air Operated Double Diaphragm Pump
The ARO 666111-244-C is a metallic Pro Series 1-inch air-operated double-diaphragm pump designed for dependable fluid transfer in industrial and process applications. Its cast iron center body and stainless steel fluid section, combined with PTFE diaphragms with Santoprene® backup, PTFE check balls, and 316 stainless steel seats, provide a durable fluid-handling configuration for a variety of applications.
The single-manifold design provides a compact configuration, while ARO describes the bolted construction as supporting “leak-free fluid handling.” Accessible ball checks and fluid caps also help simplify routine service and maintenance. Its 1-inch design supports common transfer, circulation, filling, and batching duties across industrial, chemical, petrochemical, construction, and other process environments.
Application suitability should be confirmed based on the specific fluid, concentration, temperature, chemical compatibility, solids content, and operating conditions.
Operator's Manual - CCN 81376642
ARO Compact and Pro Series Diaphragm Pumps
| Air Exhaust (Female) | 3/8 - 18 NPTF - 1 |
| Air Inlet (Female) | 1/4 - 18 NPTF - 1 |
| Air Supply Filtration Requirement | 50 microns max |
| Ball Material | PTFE |
| Center Body Material | Cast Iron, NPTF |
| Diaphragm Material | PTFE / Santoprene® |
| Displacement / Cycle @ 100 psig | 0.16 gal (0.60 L) |
| Fluid Cap / Manifold Material | Stainless Steel, Single |
| Material Inlet / Outlet (Female) | 1 - 11-1/2 NPTF-1 |
| Maximum Air Inlet Pressure | 120 psig (8.3 bar) |
| Maximum Dry Suction Lift | 20 ft (6.1 m) |
| Maximum Flow Rate (Flooded Inlet) | 35 gpm (133 lpm) |
| Maximum Material Inlet Pressure | 10 psig (0.69 bar) |
| Maximum Outlet Pressure | 120 psig (8.3 bar) |
| Maximum Temperature Limits | 40°–225°F (4°–107°C) (limited by PTFE) |
| Maximum Particle Size / Max Solids | 1/8" dia. (3.2 mm) |
| Muffler | Integral |
| Noise Level @ 70 psig, 60 cpm | 78.3 dB(A) |
| Product Series | Pro Series / Metallic |
| Ratio | 1:1 |
| Seat Material | 316 Stainless Steel |
| Weight | 36.95 lb (16.76 kg) (includes cast-iron air motor section) |
| ACCESSORIES / SERVICE: | |
| Air Line Connection Kit | 66073-2 |
| Air Section Service Kit | 637118-C |
| Filter / Regulator - 1/4" NPT | P39224-600 |
| Fluid Section Service Kit (Without Seats) | 637119-44-C |
| Valve Seat - 316 Stainless Steel | 90428-1 |
| Wall Mount | 66100 |
