ACCA 1AJ345 Progressive Cavity Pump
Single-stage aftermarket progressive cavity pump for supported Moyno® 1J345 G1 installations.
The 1AJ345 combines the 345 pumping element with the J-size drive end in a one-stage configuration. Selection should be confirmed from the complete nameplate and actual operating duty.
1AJ345 at a Glance
1 Stage
Single-stage 345 pumping-element configuration.
J Drive End
J-size mechanical drive-end family.
345 Element
Element 345 performance reference available.
10 in × 10 in
10-inch suction and discharge flanges.
What the 1AJ345 Model Designation Tells You
The leading 1 identifies one stage, J identifies the drive-end size, and 345 identifies the pumping-element family. ACCA uses 1AJ345 for its corresponding A-Series aftermarket designation. G1 identifies the flanged suction-housing arrangement.
The complete nameplate remains important because joint style, material trim and other construction details can affect the required replacement build.
Understanding the 1AJ345 Model Code
1 · Pressure Class
Single-stage configuration rated up to 87 psi.
J · Drive End
J drive end rated up to 28.0 HP per 100 RPM.
345 · Pumping Element
340.0 GPM per 100 RPM.
G1 · Pump Type
Standard G1 configuration.
Additional Nameplate Configuration Codes
The remaining nameplate characters identify the body material, internal material, stator material, sealing arrangement, shaft/internal variation and rotor variation. Stator material options include Nitrile, Urethane, Natural Rubber, EPDM, Fluoroelastomer and special materials selected for the application. Confirm the complete nameplate before selecting replacement components.
1AJ345 Size and Installation Envelope
The 1AJ345 is approximately 94.25 inches at dimension A and has an approximate pump weight of 1,835 lb. With 10-inch suction and discharge connections, replacement planning should account for foundation space, lifting access, pipe alignment and independent piping support.
| Model | A | B | D | E | H | W | Suction | M | Discharge | M1 | Weight |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1AJ345 | 94.25 | 53.37 | 11.00 | 21.50 | 3.38 | 15.00 | 10 in | 16.00 | 10 in | 16.00 | 1,835 lb |
Dimensions in inches unless noted. Confirm final order dimensions against order documentation before fabrication or installation.
Understanding the 345 Pumping Element
The 345 code identifies the pumping-element family rather than the drive end. The single-stage 1AJ345 differs materially from multi-stage 345 configurations, so stage count, drive-end family and complete construction must be considered together rather than selecting from “345” alone.
1AJ345 Performance Curve
Element 345 Performance Curve
View or download the Element 345 performance curve for capacity, speed and operating-reference information used when evaluating the 1AJ345.
Performance and Operating Selection
The ACCA Element 345 performance curve includes the 1AJ345 configuration. Final sizing should consider required flow, differential pressure, speed, viscosity, solids, temperature, stator elastomer and suction conditions. As a positive-displacement pump, the unit should not operate against a closed discharge and should not be intentionally run dry.
Stator Material Options
Available stator materials include Nitrile, Urethane, Natural Rubber, EPDM, Fluoroelastomer, and special application materials. Final material selection should be based on fluid compatibility, temperature, abrasion, and operating conditions.
Where the 1AJ345 Fits
Wastewater & Sludge
Large sludge and solids-bearing transfer duties subject to actual duty review.
Industrial Slurries
Viscous and abrasive process transfer where rotor, stator and speed are selected for the slurry.
Chemical & Process Transfer
Process-fluid duties where elastomer and wetted-material compatibility are verified.
Need Parts for a Moyno® J Drive End?
ACCA supports aftermarket rotors, stators and J drive-end repair components for supported 2000 Series configurations.
Specify an ACCA 1AJ345 Replacement Pump
Send the complete 1J345 G1 nameplate, required flow, differential pressure, fluid description, temperature and available drive information.
Engineering Context for the 1AJ345
The 1AJ345 combines the 345 element at 340.0 GPM per 100 RPM with the J drive end rated to 28.0 HP per 100 RPM. It is a very high-displacement single-stage 87 psi configuration, so actual speed, suction conditions, viscosity and drive loading are central to final sizing.
Technical Resources
2000 Series Pumps · Cross Reference · Nameplate Guide · Applications & Industries
Moyno® is a registered trademark of its respective owner. ACCA Pumps is not affiliated with or endorsed by Moyno. Brand and model references are used solely to identify aftermarket compatibility and replacement applications.