Diaphragm Pump, 1-1/2 In, Aro Pro Series

The ARO 666112-544-C Metallic Pro Series Air-Operated Double Diaphragm (AODD) Pump delivers reliable, high-performance fluid handling for demanding industrial applications.
Built with a cast iron center body, cast iron fluid caps, and stainless steel hardware, this pump ensures exceptional durability and corrosion resistance.
Designed for chemical transfer, wastewater treatment, and general industrial use, it offers a maximum flow rate of 35 GPM (133 LPM) and supports a variety of fluids across a wide temperature range.
Key Features:
• Robust cast iron construction for durability and extended service life.
• PTFE/Santoprene diaphragms provide chemical compatibility and wear resistance.
• Stainless steel hardware prevents corrosion and ensures long-term reliability.
• Quick and easy maintenance with single-manifold design.
• Handles solids up to 1/8 in (3.2 mm).
• Operates efficiently at up to 120 PSI (8.3 bar) with 0.16 gal (0.60 L) discharge per cycle.
• Ideal for harsh industrial environments requiring chemical and abrasive resistance.
Technical Specifications:
Model Series: 1 In Metallic Pro Series
Type: Standard Pump
Configuration: Single Manifold
Material: Cast Iron Center Body
Liquid End Configuration: Cast Iron Fluid Caps & Manifold
Hardware: Stainless Steel
Air Inlet: 1/4 - 18 NPTF-1
Connection Type: 1 - 11-1/2 NPTF-1
Connection Size: 1 In
Maximum Flow Rate: 35 GPM (133 LPM)
Maximum Working Pressure: 120 PSI (8.3 bar)
Discharge Volume Per Cycle: 0.16 Gal (0.60 L)
Max Suction Lift: 20 Ft (6.1 m)
Valve Balls: PTFE
Valve / Seat / O-Ring: Carbon Steel
Solids Handling: 1/8 In (3.2 mm)
Temperature Range: 40°–225°F (4°–107°C)
Diaphragm Material: PTFE / Santoprene
Manufacturer: ARO, An Ingersoll Rand Business

MFR 666112-544-C