Moyno® L12 Pump Parts
OEM-compatible replacement parts for the L12 Drive End and supported 1L12, 2L12, 3L12 pump frames.
Use the complete frame size, type designation, serial number and trim code to select the correct drive-end components, rotor and stator.
L12 Drive End Engineering Overview
The L12 page is organized around the original L-Frame drive-end parts structure. Drive-end components are selected from the pump type designation, while rotor and stator references are selected by complete frame size. Related M- and P-frame configurations can share this drive end where the pumping element size has been adapted to a larger drive end.
Pin-Joint Drive Train
Inspect the drive shaft, pins, connecting rod and retaining hardware as a system during overhaul.
Model and Material Identification
The complete nameplate designation matters because materials of construction and sealing arrangements affect the applicable part number.
Rotor and Stator Selection
Confirm the complete frame and material configuration before matching rotor and stator references.
L12 Engineering Data
| Pump Family | Moyno® L-Frame |
| Drive End | L12 |
| Primary Frames | 1L12, 2L12, 3L12 |
| Related Configurations | 1L12H, 2L12H, 3M10, 3M10H |
| Joint Design | Pin joint |
Commonly Stocked L12 Replacement Parts
These components are commonly stocked or regularly manufactured for supported Moyno® L12 L-Frame pumps. Inventory changes daily; contact ACCA Pumps to confirm current availability and lead time.
Rotor
Commonly Stocked
OEM-compatible rotors for supported configurations; material and finish vary by application.
Stator
Commonly Stocked
Replacement stators in application-appropriate elastomer and construction options.
Bearing Kit
Commonly Stocked
Drive-end bearing service components for planned maintenance and rebuilds.
Pin Joint Components
Commonly Stocked
Pins, retainers, connecting-rod hardware and related drive-train components.
Drive Shaft
Commonly Stocked
OEM-compatible replacement drive shafts for supported L-Frame configurations.
Packing Components
Commonly Stocked
Packing, lantern-ring and stuffing-box service components where applicable.
Mechanical Seals
Available on Request
Seal selection depends on pump model, shaft arrangement and process requirements.
Complete Replacement Pumps
Built to Order
Complete OEM-compatible progressive cavity pump assemblies for supported installations.
If your pump is down, send the complete model, serial number and OEM part number when available. ACCA can help confirm the correct replacement and discuss current availability or expedited shipment options.
Before You Order L12 Parts
Provide frame size, type designation, serial number, trim code and OEM part number when available. Do not select a component by appearance alone.
Supported L12 Frame Configurations
1L12H, 2L12H, 3M10, 3M10H
L12 Drive End Replacement Parts
The table consolidates OEM part numbers documented for this drive-end family. Where multiple part numbers are shown, the correct reference depends on material/type designation or pump configuration.
| Ref. | Component Description | ACCA Part Number | OEM Part Number | Notes |
|---|---|---|---|---|
| — | Bearing Housing | A-A12051 | A12051 | Confirm complete model, type designation and material configuration. |
| — | O-Ring | A-A12111 | A12111 | Confirm complete model, type designation and material configuration. |
| — | Roller Bearing Assembly | A-A12311 | A12311 | Confirm complete model, type designation and material configuration. |
| — | Bearing Cover Plate | A-A12341 | A12341 | Confirm complete model, type designation and material configuration. |
| — | Pump Support | A-A12371 | A12371 | Confirm complete model, type designation and material configuration. |
| — | Stator Support L12 | A-A12381 | A12381 | Confirm complete model, type designation and material configuration. |
| — | Shaft Collar | A-A12491 | A12491 | Confirm complete model, type designation and material configuration. |
| — | Pin Retainer | A-A12501 | A12501 | Confirm complete model, type designation and material configuration. |
| — | Connecting Rod Washer (Nitrile) | A-A12531 | A12531 | Confirm complete model, type designation and material configuration. |
| — | Lantern Ring Half (2 Required) | A-A12571 | A12571 | Confirm complete model, type designation and material configuration. |
| — | Bearing Lock Nut | A-A12581 | A12581 | Confirm complete model, type designation and material configuration. |
| — | Radial/Thrust Grease Seal | A-A12611 | A12611 | Confirm complete model, type designation and material configuration. |
| — | Spud | A-A12671 | A12671 | Confirm complete model, type designation and material configuration. |
| — | Retaining Screw Washer | A-A12731 | A12731 | Confirm complete model, type designation and material configuration. |
| — | Slinger Ring | A-A12771 | A12771 | Confirm complete model, type designation and material configuration. |
| — | Adapter Flange Gasket | A-A12791 | A12791 | Confirm complete model, type designation and material configuration. |
| — | Cover Plate Gasket | A-A12793 | A12793 | Confirm complete model, type designation and material configuration. |
| — | Suction Housing | A-B12021 A-B12026 | B12021 B12026 | Confirm complete model, type designation and material configuration. |
| — | Reducer | A-B12091 A-B12096 | B12091 B12096 | Confirm complete model, type designation and material configuration. |
| — | Adapter Flange | A-B12121 A-B12126 | B12121 B12126 | Confirm complete model, type designation and material configuration. |
| — | Connecting Rod | A-B1225D A-B1225S | B1225D B1225S | Confirm complete model, type designation and material configuration. |
| — | Drive Shaft | A-B12261 A-B12262 A-B12266 A-B12267 | B12261 B12262 B12266 B12267 | Confirm complete model, type designation and material configuration. |
| — | Packing Gland | A-B1241D A-B1241S | B1241D B1241S | Confirm complete model, type designation and material configuration. |
| — | Packing | A-B12421 A-B12427 | B12421 B12427 | Confirm complete model, type designation and material configuration. |
| — | Rotor / Shaft Pin | A-B1245D A-B1245S | B1245D B1245S | Confirm complete model, type designation and material configuration. |
| — | Drive Pin Retaining Screw | A-B1254D A-B1254S | B1254D B1254S | Confirm complete model, type designation and material configuration. |
| — | Packing Washer | A-B1265D A-B1265S | B1265D B1265S | Confirm complete model, type designation and material configuration. |
| — | Grit Seal | A-B1288D A-B1288S | B1288D B1288S | Confirm complete model, type designation and material configuration. |
L12 Repair Kits
Repair kits group commonly serviced components for planned drive-end maintenance. Confirm the complete pump model and material configuration before ordering.
| Kit Description | ACCA Part Number | OEM Part Number | Includes / Notes |
|---|---|---|---|
| Bearing Kit | A-K12311 | K12311 | Bearing service kit for the L12 drive-end family. Confirm exact contents for the pump configuration. |
| Connecting Rod Kit — Carbon / Alloy Steel | A-K1225D | K1225D | Connecting-rod and pin-joint service kit for applicable D-material type designations. |
| Connecting Rod Kit — Stainless Steel | A-K1225S | K1225S | Connecting-rod and pin-joint service kit for applicable S-material type designations. |
L12 Rotor Part Numbers
| Frame | ACCA Rotor | OEM Rotor | Notes |
|---|---|---|---|
| 1L12 | A-C71121 A-C81121 | C71121 C81121 | Rotor references vary by metallurgy and rotor variation. |
| 2L12 | A-C72121 A-C72123 A-C82121 | C72121 C72123 C82121 | Rotor references vary by metallurgy and rotor variation. |
| 3L12 | A-C73121 A-C73123 A-C83121 A-C83123 | C73121 C73123 C83121 C83123 | Rotor references vary by metallurgy and rotor variation. |
L12 Stator Part Numbers
Complete stator part numbers are listed below with the elastomer suffix included so maintenance and purchasing teams can cross-reference the exact OEM number.
| Frame | ACCA Stator | OEM Stator | Elastomer |
|---|---|---|---|
| 1L12 | A-C4112Q | C4112Q | Nitrile (NBR) |
| 1L12 | A-C4112R | C4112R | Natural Rubber |
| 1L12 | A-C4112B | C4112B | EPDM |
| 1L12 | A-C4112F | C4112F | Fluoroelastomer (FKM) |
| 1L12 | A-C5112Q | C5112Q | Nitrile (NBR) |
| 1L12 | A-C5112R | C5112R | Natural Rubber |
| 1L12 | A-C5112B | C5112B | EPDM |
| 2L12 | A-C4212Q | C4212Q | Nitrile (NBR) |
| 2L12 | A-C4212R | C4212R | Natural Rubber |
| 2L12 | A-C4212B | C4212B | EPDM |
| 2L12 | A-C5212Q | C5212Q | Nitrile (NBR) |
| 2L12 | A-C5212R | C5212R | Natural Rubber |
| 2L12 | A-C5212B | C5212B | EPDM |
| 3L12 | A-C4312Q | C4312Q | Nitrile (NBR) |
| 3L12 | A-C4312R | C4312R | Natural Rubber |
| 3L12 | A-C4312B | C4312B | EPDM |
Standard Stator Material Suffixes
| Suffix | Standard Elastomer |
|---|---|
| Q | Nitrile (NBR) |
| R | Natural Rubber |
| B | EPDM |
| F | Fluoroelastomer (FKM) |
Advanced Elastomer Engineering for Progressive Cavity Pumps
Every application is different, and the standard elastomer may not always be the best choice.
In addition to OEM-equivalent elastomer compounds, ACCA Pumps can manufacture stators using specialized elastomers engineered for specific operating conditions. Application-specific material selection can help improve chemical compatibility, wear resistance, service life and overall progressive cavity pump performance.
Abrasive & Solids-Bearing Service
Material options can be evaluated for wastewater sludge, mining slurries and other abrasive process streams.
Chemical Compatibility
Stator compounds can be selected around acids, caustics, hydrocarbons, polymers and other challenging process fluids.
Temperature & Process Conditions
ACCA can review fluid temperature, operating pressure and process conditions when recommending an elastomer solution.
Contact ACCA Pumps with the process fluid, operating temperature, pressure and pump model. Our engineering team can recommend a stator material for the specific application.
L12 Maintenance Recommendations
Inspect Pin-Joint Wear
Inspect pins, bores, connecting-rod ends and retaining hardware together.
Review Bearings and Seals
Inspect bearing and sealing components whenever the drive end is opened for major service.
Verify Packing Arrangement
Record packing gland, packing, lantern-ring and washer arrangement before disassembly.
Confirm Rotor/Stator Match
Use the complete frame and material specification when replacing pumping elements.
Protect Stator Installation
Use compatible assembly lubricant and protect stator threads or interfaces during installation.
Avoid Dry Running
Prime the pump with compatible process fluid before startup and confirm an open discharge path.
Frequently Asked Questions
Which pump frames are covered by the L12 page?
The primary frames are 1L12, 2L12, 3L12. Related configurations documented for the same drive-end family include 1L12H, 2L12H, 3M10, 3M10H.
How do I identify the correct L12 replacement part?
Use the complete frame size, type designation, serial number and trim code. Material and configuration differences can change the applicable part number.
Can I order individual pin-joint components?
Yes. Individual drive-train components are referenced where available, but all mating wear parts should be inspected during overhaul.
How should I select a rotor or stator?
Confirm the complete frame size and construction. Rotor and stator references are frame-specific and can vary by material or finish.
Does ACCA supply complete replacement pumps?
Yes. ACCA can support individual replacement parts, repair components and complete OEM-compatible pump assemblies for supported configurations.
Browse All Moyno L-Frame Models
Related Moyno Parts Resources
Moyno L-Frame Parts
Return to the L-Frame model selector.
Moyno 2000 Series Parts
Browse the separate gear-joint parts catalog.
Moyno Pump Parts
Browse the complete Moyno-compatible parts hub.
Why Choose ACCA L12 Replacement Parts?
OEM-Compatible Fit
Replacement components are selected for dimensional interchangeability with supported Moyno® L12 configurations.
Quality Materials
Material and elastomer options can be reviewed against the actual fluid, wear conditions and operating environment.
Engineering Support
ACCA can help identify parts from the model, serial number, OEM part number, nameplate photographs or existing components.
Fast Quotations
Clear model and part information helps our team provide a faster, more accurate replacement-parts quotation.
Stock & Expedited Options
Common wear items are frequently stocked or regularly manufactured. Current availability is confirmed at quotation.
Worldwide Support
ACCA supports industrial maintenance and purchasing teams in the United States and international markets.
Need Help Identifying Moyno L12 Parts?
Send the complete frame, type designation, serial number, trim code and OEM part number when available.
Trademark Disclaimer: Moyno® is a registered trademark of its respective owner. References are used solely to identify compatible equipment and replacement applications. ACCA Pumps is an independent aftermarket manufacturer and is not affiliated with or endorsed by the trademark owner.