AF0813 Extrusion Series Pumps

AF0813 Series Chop Check Piston Pumps & Packages

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



Available Models

Pump Model** Lower Pump Model Material Plunger Material Upper Packings Lower Packings Lower Pump Model Pump Service Kit
AF0813S11FF44 Carbon Steel, Nickel-Plated Carbon Steel w/Hard Chrome UHMW-PE UHMW-PE 66236-C4E-B 637128-C44-B
AF0813S11GF44 Carbon Steel, Nickel-Plated Carbon Steel w/Hard Chrome UHMW-PE/Glass Filled PTFE (Staggered) UHMW-PE 66236-P4E-B 637128-P44-B
AF0813S11HF44 Carbon Steel, Nickel-Plated Carbon Steel w/Hard Chrome UHMW-PE/Leather (Staggered) UHMW-PE 66236-F4E-B 637128-F44-B
AF0813S11PF14 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 13:1
Stroke 6” (15.24 cm)
Material Inlet Flange Mount
Material Outlet 1-1/2” NPT(F)
Air Inlet (female) 1/2” NPT(F)
Air Inlet Pressure Range psi (bar) 30 - 120 (2.1 - 8.3)
Fluid Pressure Range psi (bar) 390 - 1900 (26.9 - 131.0)
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 86.8
Weight* lb (kg) 125.5 (56.9)
Container Suitability Remote Mounting
AF0813 Fluid Curves


A 1 in (mm)  54.40 (1381.71)
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)

TPX Series
Two Post Ram
55 Gallon


FMX Series
Floor Mount

Model No.  Package Type Pump Model  Ram/Lift Model Follower Follower Seal Description Material


55 Gallon Two Post Ram




Double Lip, Polyurethane


Model No.  Package Type Pump Model  Floor Mount Kit Ball Valve Material Supply Hose Material Hose w/Fittings


Floor Mount






Recommended Accessories

Extrusion Guns
For material over 200,000 cP 3/8” (F) inlet
651533 For low- to medium-viscosity fluids 1/4” NPS (M) inlet

Extrusion Gun Nozzle Kits
Orifice .063” (1.63 mm), 66541-9 Orifice .093” (2.36 mm),
66541-2 Orifice .125” (3.17 mm)

Straight, 3/8” (M) x 3/8” (F) / fabric with neoprene / 8,000 psi (552 bar) max. working pressure
636088 Z-360°, 3/8” (M) x 3/8” (F) / fabric with neoprene /  8,000 psi (552 bar) max. working pressure
75364 Straight, for use with 651533 gun / 1/4”-18 NPTF to 1/4”-18 NPSM / 10,000 psi (690 bar) max working pressure

Material Filters
1” F (2) inlet 3/8” F (3) outlet / 6,000 psi (414 bar) max. / Carbon Steel
651418-40-B for 40 Mesh (375 Microns)
651418-70-B for 70 Mesh (200 Microns)

3/4” Fluid Pressure Regulators
Regulated 750 – 2,500 psi (52 – 173 bar) / 6,000 psi (414 bar) max. inlet / carbon steel
651780-C3B-B Regulated 750 – 2,500 psi (52 – 173 bar) / 6,000 psi (414 bar) max. inlet / stainless steel