4/3C-AH Slurry Pump: Complete Specifications, Performance Curve & Heavy Duty Applications

In large-scale mining and mineral processing, reliability at high flow rates is non-negotiable. The 4/3C-AH stands as a titan in the Warman AH series, combining a substantial 4-inch discharge capacity with the robust mechanical strength of the Type C bearing frame. This combination makes it the ideal choice for high-volume, high-head applications where smaller pumps simply cannot cope with the hydraulic loads or power requirements.

At Hebei XingOu Machinery Equipment Co., Ltd., we manufacture the 4/3C-AH to endure the most punishing environments. From SAG mill discharge to long-distance tailings transport, our pumps deliver the durability and efficiency required to keep major operations running smoothly. This guide explores the capabilities of this heavy-duty workhorse.

What is the 4/3C-AH?

The model number 4/3C-AH defines its heavy-duty architecture:

• 4: Discharge diameter of 4 inches (100 mm), allowing for high volumetric flow rates.

• 3: Suction diameter of 3 inches (80 mm), optimized for efficient slurry intake.

• C: Frame size code. The Type C bearing assembly is a critical feature, designed to support heavy shafts, large impellers, and high-horsepower motors (typically ranging from 22kW up to 90kW+). It ensures stability under extreme radial loads.

• AH: Signifies the Heavy Duty Slurry Pump design, featuring a thick-walled volute casing and replaceable liners for extended wear life.

The 4/3C-AH is engineered for continuous duty in the harshest conditions, offering a perfect balance of high flow capacity and the mechanical ruggedness needed for large-scale industrial processes.

Key Technical Specifications

Proper selection of a pump of this size is critical for plant efficiency. Below are the standard specifications for the XingOu 4/3C-AH:

Performance Curve: 4/3C-AH

The 4/3C-AH offers a broad hydraulic envelope, capable of delivering high flow rates while maintaining substantial head pressure. Its performance curve is characterized by a flat head-capacity relationship, which provides stable operation even when system resistance fluctuates—a common occurrence in large grinding circuits.

The "C" frame allows this pump to utilize larger diameter impellers and higher speeds, unlocking power ranges that would overload smaller frames. This results in superior efficiency at high-duty points.

Performance Highlights:

• High Volume Capacity: With flows reaching up to ~126 m³/h, it is suitable for main process streams in large concentrators.

• Robust Head Generation: Capable of generating over 60m of head, making it effective for long-distance pipeline transport or feeding high-pressure cyclone clusters.

• Mechanical Stability: The Type C frame ensures that even at maximum power and speed, shaft deflection is minimized, protecting seals and bearings from premature failure.

Ideal Applications for the 4/3C-AH

Due to its size and power capacity, the 4/3C-AH is deployed in the most critical areas of a mine:

1. SAG/Ball Mill Discharge: The primary choice for pumping coarse, high-density slurry directly from large grinding mills.

2. Hydrocyclone Feed Batteries: Feeding large banks of hydrocyclones in classification circuits where consistent pressure and high flow are vital.

3. Long-Distance Tailings Transport: Moving vast quantities of tailings to storage facilities over kilometers of pipeline.

4. Coarse Coal Preparation: Handling heavy media slurries in large-scale coal washing plants.

5. Leach Circuit Transfer: Transferring abrasive leach slurries in copper, gold, and uranium processing where reliability is paramount.

Why Choose XingOu for Your 4/3C-AH?

Operating a pump of this magnitude requires absolute confidence in component quality. XingOu Machinery delivers:

• Reinforced Type C Bearings: Our bearing assemblies are machined to precise tolerances using high-grade steel, ensuring they can handle the immense radial loads generated by large impellers and high-speed operation.

• Advanced A05 Casting: Our foundry produces High Chrome Alloy (A05) liners and impellers with uniform microstructure, providing exceptional resistance to the severe abrasion found in mill discharge applications.

• Full Interchangeability: Every XingOu 4/3C-AH part is a direct drop-in replacement for original Warman units, minimizing installation time and downtime.

• Custom Engineering: We assist in selecting the optimal impeller trim, lining material (Metal vs. Rubber), and seal type to match your specific slurry characteristics and duty point.

Conclusion

The 4/3C-AH is the backbone of many high-capacity mineral processing operations. Its ability to move large volumes of abrasive slurry with mechanical integrity makes it an indispensable asset. By choosing XingOu Machinery, you gain a partner committed to delivering heavy-duty performance, superior wear life, and global support.

Need a reliable 4/3C-AH for your plant?
Ensure your critical process lines never stop. Contact XingOu Machinery today with your duty point requirements. Our engineers will configure the perfect 4/3C-AH solution, complete with the right motor, drive, and wear materials for your specific mining challenge.