AF1230 Extrusion Series Pumps

AF1230 Series Chop Check Piston Pumps & Packages

30:1 Ratio
12" Air Motor
12.2 GPM (46.3 LPM) Max Flow
Max Fluid: 3,250 psi



Available Models

Pump Model** Lower Pump Material Plunger Material Upper Packings Lower Packings Lower Pump Model Pump Service Kit
AF1230S11FF44 Carbon Steel, Nickel-Plated Carbon Steel w/Hard Chrome UHMW-PE UHMW-PE 66236-C4E-B 637128-C44-B
AF1230S11HF44 Carbon Steel, Nickel-Plated Carbon Steel w/Hard Chrome UHMW-PE/Leather (Staggered) UHMW-PE 66236-F4E-B 637128-F44-B
AF1230S11PF14 Carbon Steel, Nickel-Plated Carbon Steel w/Hard Chrome Polyurethane UHMW-PE 66236-J3E-B 637128-J34-B

**Add “-1” to Model No. for Ball Valve Regulator

Chop-Check pumps are designed to move medium-to-high viscosity fluids in difficult applications.

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).

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 overcome materials that resist cut-off and adhere to 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.


Ratio 30:1
Stroke 6” (15.24 cm)
Material Inlet Bolted Flange
Material Outlet 1-1/2” NPT(F)
Air Inlet (female) 3/4” NPT(F)
Air Inlet Pressure Range psi (bar) 30 - 90 (2.1 - 6.2)
Fluid Pressure Range psi (bar) 900 - 3250 (62.1 - 224.1)
Max Cycles/Minute 70.0
Displacement/Cycle cu in (cm3) 40.4 (662.0)
Cycles/gal (L) 5.7 (1.5)
Flow @ 60 Cycles gpm (L/min) 12.2 (46.3) (@70 Cycles)
Noise Level @ 60 psi dBA 93.0
Weight* lb (kg) 78 (35.42)
Container Suitability Remote Mounting
61204X-X Series Pumps


A 1 in (mm)  54.43 (1382.47)
B in (mm)  31.34 (796.11)
C in (mm)  19.94 (506.40)

*For models without ball valve regulator subtract 2.08 in (52.83 mm)