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Simply Versatile

The heavy-hitters of the line, ARO® chop-check pumps are designed to move medium-to high- viscosity fluids ranging from 15,000 cPs to more than 1,000,000 cPs, and at delivery rates up to 12.2 gpm (46.3 L/min).

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AF0646 Series

AF0423 Series Chop Check Piston Pumps

23:1 Ratio Max Flow: 1.8 GPM (6.81 l/min) Max Fluid Pressure: 3,690 psi (25,4 bar) Lower pump material available in carbon steel or stainless steel

AF0665 Series Chop Check Piston Pumps

65:1 Ratio 6" Air Motor Max Flow: 1.3 GPM (5.1 l/min) Max Fluid: 7,475 psi (515.4 bar)

AF0844 Series Chop Check Piston Pump

44:1 Ratio 8" Air Motor Max Flow: 3.8 GPM (14.3 l/min) Max Fluid Pressure: 5,964 psi (411.2 bar) Lower pump material available in carbon steel or stainless steel

650934-X43-C Chop Check Piston Pump

2:1 Ratio Max Flow: 2.7 GPM (10.2 LPM) Fluid Pressure: 100 - 2400 PSI (6.9 - 165.5 bar)

AF0443 Series Chop Check Piston Pumps

43:1 Ratio Max Flow: 0.74 GPM (2.8 l/min) Max Fluid Pressure: 6,549 psi (451.6 bar) About the Chop-check Piston Pump range of ARO: The heavy-hitters of the line, ARO chop-check pumps are designed to move medium to high viscosity fluids ranging from 15,000 to more than 1,000,000 cPs, and at delivery rates up to 46.3 l/min (12 gpm).

AF1265S Series

65:1 Ratio 12" Air Motor Max Flow: 6 GPM (22.9 LPM) Max Fluid Pressure: 5,850 psi

AF1230 Series

30:1 Ratio 12" Air Motor Max Flow: 12.2 GPM (46.3 l/min) Max Fluid Pressure: 3,250 psi (224 bar)

650941-XXE-C Chop-Check Piston Pump

1.2:1 Ratio Max Flow: 8.7 gpm (33.1 LPM) Fliud Pressure: 60-2670 PSI (4.1 - 184.1 bar)

NM2322E F Series Chop Check

22:1 Ratio 3" Air Motor 0.99 GPM (3.7 LPM) Max Flow Max Fluid: 3,300 psi

AF0623S Series Chop Check Piston Pump

23:1 Ratio Max Flow: 3.2 GPM (12.3 LPM) Max Fluid Pressure: 4,215 psi Lower pump material available in carbon steel or stainless steel

AF0813 Series Chop Check Piston Pump

13:1 Ratio 8" Air Motor Max Flow: 12.2 GPM (46.3 LPM) Max Fluid Pressure: 1,900 psi

AF0412 Series Chop Check Piston Pumps

12:1 Ratio Max Flow: 3.2 GPM (12.3 LPM) Max Fluid Pressure: 2,085 psi (143.8 bar) Lower pump material available in carbon steel or stainless steel

AF1044 Series Chop Check Piston Pump

44:1 Ratio 10" Air Motor Max Flow: 6 GPM (22.9 l/min) Max Fluid Pressure: 3,960 psi (273 bar) About the Chop-check pneumatic piston pump range of ARO: The heavy-hitters of the line, ARO chop-check pumps are designed to move medium to high viscosity fluids ranging from 15,000 to more than 1,000,000 cPs, and at delivery rates up to 46.3 l/min (12 gpm).

AF1020 Series Chop Check Piston Pump

20:1 Ratio 10" Air Motor Max Flow: 10.5 GPM (39.7 l/min) Max Fluid Pressure: 2,250 psi (155.2 bar) About the Chop-check pneumatic piston pump range of ARO: The heavy-hitters of the line, ARO chop-check pumps are designed to move medium to high viscosity fluids ranging from 15,000 to more than 1,000,000 cPs, and at delivery rates up to 12 gpm (46.3 l/min).

AF0828S Series Chop Check Piston Pump

28:1 Ratio 8" Air Motor Max Flow: 6 GPM (22.7 l/min) Max Fluid Pressure: 3,360 psi (231.6 bar)

650935-X43-C Chop-Check Piston Pump

3.6:1 Ratio Max Flow: 1.5 GPM (5.7 LPM) Fluid Pressure: 165 - 3960 PSI (11.4 - 273.1 bar )

Applications advantages of Chop-Check:

  • Extrusion: Chop-Check pumps are workhorses - able to deliver viscous adhesives, sealants, caulking and heavy lubricants to the application point at the desired pressure and flow rate. 
  • Transfer & Supply: Depending on the model, some Chop-Check pumps are capable of achieving flow rates up to 12.2 gpm, ensuring efficient transfer of heavy greases, inks and other viscous materials. 

Materials advantages of Chop-Checks:

Chop-Check pumps have a primer piston to ‘feed’ material into the pump. They are often used in conjunction with a follower plate to force material down. This prevents loss of prime due to Channeling - a condition where the pump inlet becomes surrounded by air due to the cavity formed when a high viscosity material does not level off when removed (Slumpability).

  • Stringy materials: Chop-Checks have mechanical, flat checks to over come materials that resist cut-off and adhereto themselves.
  • Tacky materials: Chop-Check pump options come in high ratios to generate the fluid pressure needed to move materials that will adhere to hoses and equipment while wet. 
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