ARO 6661AF-344-C Aluminum Polypropylene Flange Diaphragm Pump is a Pro Series, air-operated double diaphragm pump designed for reliable industrial fluid transfer. It features a 1″ non-metallic polypropylene fluid section that offers excellent chemical resistance for corrosive and abrasive applications. The aluminum center body provides structural strength while keeping the pump lightweight and durable. With a maximum flow rate of 47 GPM, it delivers efficient performance for continuous duty operations. The pump is equipped with PTFE ball check valves to ensure superior chemical compatibility and long service life. A PTFE/Santoprene diaphragm enhances flexibility while maintaining resistance to aggressive fluids. Its flange connection design allows easy integration into standard piping systems. The pump operates on a 1:1 air-to-fluid ratio, delivering smooth, stall-free operation. Overall, this model is ideal for chemical processing, water treatment, and general industrial fluid handling applications.
Type: Diaphragm Pump | Max Flow (gpm): 47 | Ratio: 1:1 | Air Inlet NPTF (in.): 1/4 - 18 | Suspended Solids Max Diameter (in.): 0.125 | Fluid Caps Manifold Material: Polypropylene Flange (one-piece manifold) | Center Body: Aluminum | Seat Material: Polypropylene | Ball Check Material: PTFE | Diaphragm Material: PTFE/Santoprene
Features:
- 1″ Non-Metallic Polypropylene Fluid Paths for excellent corrosion and chemical resistance
- Aluminum Center Body for lightweight durability and structural strength
- PTFE Ball Check Valves for superior chemical compatibility and long service life
- PTFE/Santoprene Diaphragm offering flexibility and resistance to aggressive fluids
- Maximum Flow Rate up to 47 GPM for efficient fluid transfer in industrial applications
- Flange Connections for easy integration with standard piping systems
- Handles Solids Up to ~3.2 mm for reliable handling of suspended particles
- Air-to-Liquid 1:1 Ratio for smooth and stall-free pumping performance
Made in USA: 
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- Type
- Diaphragm Pump
- Ratio
- 1:1
- Max Flow Rate (GPM)
- 47
- Displacement Per Cycle (Gallons)
- 0.17
- Air Inlet
- 1/4" NPTF
- Max Operating Pressure (PSI)
- 120
- Suspended Solids Max Diameter (in.)
- 0.125
- Max Dry Suction Lift (ft.)
- 15
- Sound Level (dbA)
- 64.5
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