PD20S-ASS-STT-B ARO 2" Stainless Steel Metallic Expert Series Air Operated Double Diaphragm Pump
ARO
$10,667.64
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ARO
PD20S-ASS-STT-B ARO 2" Stainless Steel Metallic Expert Series Air Operated Double Diaphragm Pump
P/N PD20S-ASS-STT-B ARO 2" Stainless Steel Metallic Expert Series Air Operated Double Diaphragm Pump
The ARO PD20S-ASS-STT-B is a 2-inch Metallic Expert Series air-operated double-diaphragm pump engineered for high-volume, dependable fluid handling in aggressive chemical, pharmaceutical, and industrial applications. Featuring a 316 stainless steel casing paired with stainless steel hardware, 316 stainless steel valve seats, PTFE valve balls, and PTFE / Santoprene® diaphragms, it provides superior corrosion resistance and broad chemical compatibility.
Built for reliable pneumatic operation, this pump features ARO's patented SimulShift™ "unstallable" air valve and Quick Dump™ exhaust technology to eliminate stalling and prevent cold-weather freezing. Its bolted construction ensures leak-free fluid containment and simplified field maintenance, making it well suited for corrosive chemical transfer, chemical circulation, filling, batching, and handling aggressive fluids with small suspended solids.
Application suitability should be confirmed based on fluid chemical compatibility, operating temperature, viscosity, and process conditions. Note: Maximum temperature limits are based on mechanical stress only; certain chemicals can significantly reduce safe operating ranges.
Operator's Manual - CCN 15226509
Sales and Engineering Data - CCN 15227721
ARO Expert and Compact Series Air Operated Diaphragm Pumps
| Air Exhaust | 1-1/2 - 11-1/2 NPT |
| Air Inlet | 3/4 - 14 NPTF - 1 |
| Air Supply Filtration Requirement | 50 microns max (recommended air line filter) |
| Ball Material | PTFE |
| Center Body Material (Air Motor / Air Cap) | Stainless Steel |
| Diaphragm Material | PTFE / Santoprene® |
| Displacement / Cycle @ 100 psig | 1.4 gal (5.3 L) |
| Fluid Cap / Manifold Material | Stainless Steel |
| Hardware Material | Stainless Steel |
| Material Inlet / Outlet | 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 L/min) |
| Maximum Material Inlet Pressure | 10 psig (0.69 bar) |
| Maximum Operating Temperature | 40 ° to 225 ° F (4 ° to 107 ° C) (limited by PTFE diaphragm specs) |
| Maximum Outlet Pressure | 120 psig (8.3 bar) |
| Maximum Particle Size / Max Solids | 1/4" dia. (6.4 mm) |
| Mounting Dimension | 9.062" × 13.250" (230.2 × 336.6 mm) |
| Noise Level @ 70 psig, 60 cpm | 85.0 dB(A) |
| Product Series | Expert Series / Metallic |
| Ratio | 1:1 |
| Seat Material | 316 Stainless Steel |
| Weight | 178.7 lbs (81.1 kgs) [Includes base weight of 149.8 lbs (68.0 kgs) plus 28.9 lbs (13.1 kgs) added for stainless steel air motor section] |
| ACCESSORIES: | |
| FLUID END SERVICE KIT (PTFE) 2" | 637309-TT |
| VALVE SEAT 300 SST 2" EXP | 94353 |
| AIR END SERVICE KIT (EXP/METALLIC) | 637421 |
| ARO 2000 SERIES PIGGYBACK | AROB P39354-600 |
