AF0646 Series Chop Check Piston Pumps

46:1 Ratio
6" Air Motor
Maximum Flow Rate: 1.8 GPM (6.9 l/min)
Maximum Fluid Pressure: 7,485 psi (516 bar)
Lower pump material available in carbon steel or stainless steel

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 (46.3 l/min), ensuring efficient transfer of heavy greases, inks, and other viscous materials.

Materials advantages of Chop-Check:

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.

Available Models

<table>

<thead>

<tr>

<th>Pump Model**</th>

<th>Lower Pump Model Material</th>

<th>Plunger Material</th>

<th>Upper Packings</th>

<th>Lower Packings</th>

<th>Lower Pump Model</th>

<th>Pump Service Kit</th>

</tr>

</thead>

<tbody>

<tr>

<td>Carbon Steel</td>

<td>Nickel-Plated</td>

<td>17-4 Stainless Steel w/Hard Chrome</td>

</tr>

<tr>

<td>Carbon Steel</td>

<td>Nickel-Plated</td>

<td>17-4 Stainless Steel w/Hard Chrome</td>

<td>UHMW-PE/Glass Filled PTFE (Staggered)</td>

</tr>

<tr>

<td>Carbon Steel</td>

<td>Nickel-Plated</td>

<td>17-4 Stainless Steel w/Hard Chrome</td>

<td>Glass Filled PTFE</td>

</tr>

<tr>

<td>Carbon Steel</td>

<td>Nickel-Plated</td>

<td>17-4 Stainless Steel w/Hard Chrome</td>

<td>UHMW-PE/Leather (Staggered)</td>

</tr>

<tr>

<td>Carbon Steel</td>

<td>Nickel-Plated</td>

<td>17-4 Stainless Steel w/Hard Chrome</td>

<td>Glass Filled PTFE/UHMW-PE (Staggered)</td>

<td>Glass Filled PTFE</td>

</tr>

<tr>

<td>Stainless Steel</td>

<td>17-4 Stainless Steel w/Hard Chrome </td>

</tr>

<tr>

<td>Stainless Steel</td>

<td>17-4 Stainless Steel w/Hard Chrome </td>

<td>Glass Filled PTFE </td>

</tr>

<tr>

<td>Stainless Steel</td>

<td>17-4 Stainless Steel w/Hard Chrome </td>

<td>Glass Filled PTFE/ UHMW-PE (Staggered) </td>

<td>Glass Filled PTFE </td>

</tr>

<tr>

<td>Stainless Steel</td>

<td>17-4 Stainless Steel w/Hard Chrome </td>

<td>Virgin PTFE </td>

</tr>

<tr>

<td>**Add “-1” to Model Number for Ball Valve Regulator</td>

</tr>

</tbody>

</table>

SPX Series Single Post Ram - 5 Gallon (18.93 Liters)

TPX Series Two Post Ram - 5 Gallon (18.93 Liters)

TPX Series Two Post Ram - 55 Gallon (208 Liters)

FMX Series Floor Mount Bulk

<table>

<thead>

<tr>

<th>Model Number</th>

<th>Package Type</th>

<th>Pump Model</th>

<th>Ram/Lift Model</th>

<th>Follower</th>

<th>Follower Seal Description</th>

<th>Material</th>

</tr>

</thead>

<tbody>

<tr>

<td>CARBON STEEL PACKAGES</td>

</tr>

<tr>

<td>5 Gallon Single Post Ram</td>

<td>Single Lip</td>

<td>Polyurethane/Urethane</td>

</tr>

<tr>

<td>5 Gallon Two Post Ram</td>

<td>Single Lip</td>

<td>Polyurethane/Urethane</td>

</tr>

<tr>

<td>55 Gallon Two Post Ram</td>

<td>Double Lip</td>

<td>Polyurethane</td>

</tr>

<tr>

<td>55 Gallon Two Post Ram</td>

<td>Double Lip</td>

<td>Polyurethane</td>

</tr>

<tr>

<td>55 Gallon Two Post Ram</td>

<td>Double Lip</td>

<td>Polyurethane</td>

</tr>

<tr>

<td>55 Gallon Two Post Ram</td>

<td>Double Lip</td>

<td>Polyurethane</td>

</tr>

<tr>

<td>55 Gallon Two Post Ram</td>

<td>Double Lip</td>

<td>Polyurethane</td>

</tr>

<tr>

<td>55 Gallon Two Post Ram</td>

<td>Double Lip</td>

<td>Polyurethane</td>

</tr>

<tr>

<td>Model Number</td>

<td>Package Type</td>

<td>Pump Model</td>

<td>Floor Mount Kit</td>

<td>Ball Valve</td>

<td>Material Supply Hose</td>

<td>Material Hose w/Fittings</td>

</tr>

<tr>

<td>5 Gallon Single Post Ram</td>

<td>Includes Floor Mount Kit</td>

<td>Includes Ball Valve</td>

<td>Material Supply Hose 3/8''</td>

<td>Material Hose w/Fittings 3/8''</td>

</tr>

<tr>

<td>5 Gallon Single Post Ram</td>

<td>Includes Floor Mount Kit</td>

<td>Includes Ball Valve</td>

<td>Material Supply Hose 3/8''</td>

<td>Material Hose w/Fittings 3/8''</td>

</tr>

<tr>

<td>55 Gallon Two Post Ram</td>

<td>Includes Floor Mount Kit</td>

<td>Includes Ball Valve</td>

<td>Material Supply Hose 3/8''</td>

<td>Material Hose w/Fittings 3/8''</td>

</tr>

<tr>

<td>55 Gallon Two Post Ram</td>

<td>Includes Floor Mount Kit</td>

<td>Includes Ball Valve</td>

<td>Material Supply Hose 3/8''</td>

<td>Material Hose w/Fittings 3/8''</td>

</tr>

</tbody>

</table>

Recommended Accessories

Extrusion Guns:
651500: For material over 200,000 cPs, 3/8" (F) inlet
651533: For low- to medium-viscosity fluids, 1/4" NPS (M) inlet

Extrusion Gun Nozzle Kits:
66541-6: Orifice .063" (1.63 mm)
66541-9: Orifice .093" (2.36 mm)
66541-2: Orifice .125" (3.17 mm)

Swivel:
636085: 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:
651780-C1B-B: Regulated 750 – 2,500 psi (52 – 173 bar) / 6,000 psi (414 bar) max. inlet / carbon steel
651780-C1C-B: Regulated 2,000 – 5,000 psi (138 – 345 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
651780-C3R-B: Regulated 750 – 5,000 psi (52 – 345 bar) / 6,000 psi (414 bar) max. inlet / stainless steel