ACCA 3L12 Progressive Cavity Pump
Complete 3-stage L12 pump for supported Moyno® 3L12 replacement applications.
The L12 pumping element has 42.4 GPM per 100 RPM theoretical displacement. The 3-stage configuration is selected where greater differential-pressure capability is required than lower-stage L12 configurations.
3L12 Pump Specifications
| Stages | 3 | Theoretical displacement | 42.4 GPM / 100 RPM |
|---|---|---|---|
| Suction | 8.00 in | Discharge | 6.00 in |
| Overall length (CP) | 101.44 in | Weight | 945 lb |
How to Read 3L12
Stage count is selected around differential-pressure requirements.
Identifies the L-Frame drive-end and pumping-element relationship.
L12 displacement is 42.4 GPM per 100 RPM.
Important: stage count affects pressure capability; it does not multiply displacement per revolution. 1L12, 2L12 and 3L12 use the same L12 theoretical displacement.
3L12 Theoretical Capacity by Speed
Actual delivered flow can be lower depending on differential pressure, viscosity, rotor/stator fit, wear and internal slip.
Materials of Construction & Type Designation
L-Frame pumps use a three-letter Type Designation to identify materials by component group. CDQ is a common standard construction, but it is only one of many available material combinations.
C Cast Iron · E Alloy CB-20 Stainless · H Hastelloy C · M Monel · S 316 Stainless Steel · W Cast Steel · X Special
D Alloy Steel · E Alloy CB-20 Stainless · G 416 Stainless · H Hastelloy C · J 17-4 PH Stainless · M Monel · S 316 Stainless · X Special
The third character identifies the stator material only; it does not identify the stator tube/casing material.
Stator Material Codes
| Code | Material Designation | Code | Material Designation |
|---|---|---|---|
| B | EPDM 300, 70 durometer | C | Buna-N 103, 50 durometer |
| D | Tool Steel | E | Buna-N 110, 70 durometer |
| F | Viton 500, 75 durometer | G | 416 Stainless Steel |
| H | Hastelloy C | J | 17-4 PH Stainless Steel |
| K | Hypalon 800, 70 durometer | M | Buna-N 100M, 70 durometer |
| P | Thiokol, 70 durometer | Q | Buna-N 100, 70 durometer |
| R | Natural Rubber 200, 55 durometer | T | Teflon, 15% glass |
| U | Urethane, 70 durometer | X | Special to application |
| Z | Buna-N 150, 70 durometer |
Example – CDQ: C = cast-iron suction housing; D = alloy-steel wetted internals; Q = Buna-N / nitrile stator. The three-letter type code should be read as a material system, not as a single fixed construction.
Stator casing: the type designation does not identify the stator tube. ACCA stator references distinguish regular-steel casing (C4 series) and stainless-steel casing (C5 series) where applicable.
Special Construction / Trim Code: Semi-standard and special-construction pumps may include a separate three-character trim code. The first character identifies sealing variations, the second identifies internal variations, and the third identifies rotor variations. When replacing a special-construction pump, provide ACCA with the complete frame, type designation and trim code.
Typical 3L12 Applications
Use these application guides for process-specific selection considerations. Final pump construction should be confirmed against the actual fluid and duty.
Wastewater & Sludge
Higher-capacity sludge transfer and solids-bearing wastewater services.
Mining
Abrasive and solids-bearing process duties with application-specific materials.
FGD Slurry
Slurry-transfer duties in flue-gas-desulfurization systems where progressive-cavity pumping is appropriate.
3L12 Technical Downloads
3L12 Dimensions & Installation Drawing
Complete dimensional reference including connections, keyway, disassembly clearance and pump weight.
L12 Operation & Maintenance Manual
Installation, maintenance, disassembly, inspection, replacement-parts references and service information.
Maintaining an Existing L12 Pump?
Rotors · Stators · Connecting Rod Kits · Drive Components · Bearings · Seals
ACCA supports the installed L12 family with replacement pumping elements and drive-end components.
L12 Element Engineering
The L12 pumping element displaces 42.4 GPM per 100 RPM. Pump speed establishes theoretical capacity before slip and application corrections are considered. For abrasive water-based slurries, horsepower allowance must account for solids concentration and particle size. For Newtonian viscous fluids, apply the L12 viscosity horsepower adder appropriate to viscosity, speed and stage count. Temperature and rotor fit can also increase required starting torque and horsepower.
Approved ACCA L12 configurations on this site: 1L12, 2L12 and 3L12. Do not infer additional stage configurations from generic engineering tables.
Use the L-Frame Horsepower, Slurry & Viscosity Selection Guide →
Related L12 Pump Configurations
Need a 3L12 Replacement Pump?
Send ACCA the existing pump model and operating conditions. We can review flow, differential pressure, fluid, materials, elastomer and drive requirements.
Moyno® is a registered trademark of its respective owner. ACCA Pumps is independent; model references identify compatible replacement applications.