PD20A-AAP-AAA-B ARO 2" Aluminum Metallic Expert Series Air Operated Double Diaphragm Pump
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ARO
PD20A-AAP-AAA-B ARO 2" Aluminum Metallic Expert Series Air Operated Double Diaphragm Pump
P/N PD20A-AAP-AAA-B ARO 2" Aluminum Metallic Expert Series Air Operated Double Diaphragm Pump
The ARO PD20A-AAP-AAA-B is a metallic Expert Series 2-inch air-operated double-diaphragm pump designed for dependable, high-volume fluid delivery even at low air pressure. Its aluminum air motor section, fluid caps, and manifold with carbon-steel hardware, combined with Santoprene® diaphragms, Santoprene® check balls, and Santoprene® seats, provide a durable fluid-handling configuration.
Built for reliable pneumatic operation, the Expert Series design incorporates ARO's patented SimulShift™ air valve technology to help avoid stalling and Quick Dump™ check valves that divert cold exhaust air away from ice-prone components to help reduce freezing and downtime. Its bolted construction supports secure fluid containment and convenient serviceability, making the pump well suited for fluid transfer, filling, recirculation, batching, and other industrial process applications.
Application suitability should be confirmed based on the specific fluid, concentration, temperature, viscosity, chemical compatibility, solids content, and operating conditions. Aluminum wetted components must not be used with halogenated hydrocarbon solvents that may react with the aluminum, and models containing aluminum wetted parts must not be used with food products intended for human consumption.
Operator's Manual - CCN 15226509
Sales and Engineering Data - 15227721
ARO Expert and Compact Series Air Operated Diaphragm Pumps
| Air Exhaust (Female) | 1-1/2 - 11-1/2 NPT |
| Air Inlet (Female) | 3/4 - 14 NPTF - 1 |
| Air Supply Filtration Requirement | 50 microns max |
| Ball Material | Santoprene® |
| Center Body Material (Air Motor / Air Cap) | Aluminum |
| Diaphragm Material | Santoprene® |
| Displacement / Cycle @ 100 psig | 1.4 gal (5.3 L) |
| Fluid Cap / Manifold Material | Aluminum |
| Hardware Material | Carbon Steel |
| Material Inlet / Outlet (Female) | 2 - 11-1/2 NPTF - 1 |
| Maximum Air Inlet Pressure | 120 psig (8.3 bar) |
| Maximum Dry Suction Lift | 14 ft (4.2 m) |
| Maximum Flow Rate (Flooded Inlet) | 172 gpm (651 lpm) |
| Maximum Material Inlet Pressure | 10 psig (0.69 bar) |
| Maximum Outlet Pressure | 120 psig (8.3 bar) |
| Maximum Particle Size / Max Solids | 1/4" dia. (6.4 mm) |
| Maximum Temperature Limits | -40°–225°F (-40°–107°C) (limited by Santoprene®) |
| Noise Level @ 70 psig, 60 cpm | 85.0 dB(A) |
| Product Series | Expert Series / Metallic |
| Ratio | 1:1 |
| Seat Material | Santoprene® |
| Weight | 91.4 lb (41.5 kg) |
| ACCESSORIES / SERVICE: | |
| Air Line Connection Kit | 66312 |
| Air Section Service Kit | 637421 |
| Continuous Muffler | 67263 |
| Filter / Regulator - 3/4" NPT | P39354-600 |
| Fluid Section Service Kit (Without Seats) | 637309-AA |
| Major Air Valve Assembly | 637374-2 |
| Valve Seat - Santoprene® | 94328-A |
