ARO 6661A3-344-C Diaphragm Pumps

ARO 1" 6661A3-344-C Diaphragm Pump with PTFE/Santoprene Diaphragm, Polypropylene Seat and PTFE Ball.

Description: ARO 6661A3-344-C 1" Air Operated Diaphragm Pump. Max Flow of 47 gpm (177.9 lpm), 8.3 bar (120 psi) Max Discharge and up to 1/8" Solid Size.

Model#: 6661A3-344-C | Series#: 6661AX-XXX-C

Price: $174500

Availability:10 in stock. Click for Parts Breakdown
Ships from US
select 2 to 4 items to compare.

The ARO diaphragm pump offers high volume delivery even at low air pressures, easy self priming and the ability to pump various viscosity materials. This ARO 1″ diaphragm pump feature big performance in a compact package. It features flow rates up to 47 GPM (177.9 LPM).

Air operated double diaphragm pumps utilize a pressure differential in the air chambers to alternately create suction and positive fluid pressure in the fluid chambers. Flat checks insure a positive flow of fluid.

Pump cycling will begin as air pressure is applied and it will continue to pump and keep up with the demand. It will build and maintain line pressure and will stop cycling once maximum line pressure is reached (dispensing device closed) and will resume pumping as needed.



  • Robust construction with thick walled injection, molded fluid casings and cast iron or aluminum center sections to withstand tough industrial applications.
  • Efficiency - Motor design delivers optimum air efficiency
  • Reliability - ARO's patented 'Unbalanced' air valve ensures no-stall operation
  • Versatility - Multiple porting options for your application needs - Available in Flanged, Threaded, or 3 piece Manifold configurations
  • Environmentally Sound - Bolted construction for leak-free fluid handling
  • Serviceability - Easy access to ball checks and fluid caps for maintenance and repairs
6661A3-344-C Product Specific Data
Fluid Cap/Manifold MaterialColorless Polypropylene Flange (3-piece manifold)
Seat MaterialPolypropylene
Ball MaterialPTFE
Diaphragm MaterialPTFE/Santoprene
Pump TypeDiaphragm Pump
Max Air Inlet Pressure8.3 bar (120 psi)
Max Material Inlet Pressure0.69 bar (10 psi)
Max Outlet Pressure8.3 bar (120 psi)
Max Flow Rate47 gpm (177.9 lpm)
Displacement/Cycle @ 100 psig (Standard Diaphragm)0.17 gal (.64 lit)
Displacement/Cycle @ 100 psig (Composite PTFE Diaphragm)0.14 gal (.525 lit)
Max Solid Size1/8" (3.2 mm)
Max Temperature Limits (F)10° to 200°
Max Temperature Limits (C)-12° to 93°
Noise Level @ 70 psi, 60 cpm 64.5 dB(A)
Size1" (25.4 mm)
Document Title Download
Operators ManualClick Here to Download
SpecificationsClick Here to Download
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3593237-193237-1 - ARO Manifold, Foot (Bottom) by Ingersoll Rand2$147.00
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1249327793277 - ARO Screw (5/16" - 18 x 2-3/8"), Material Stainless Steel by Ingersoll Rand12$22.10
ID Short Details Price  
66073-2ARO 66073-2$341.00
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ID Short Details Price  
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