Weir Minerals Warman AH Heavy-Duty Slurry Pump

Overview

The Weir Minerals Warman AH is a horizontal, heavy-duty centrifugal slurry pump designed for the continuous pumping of highly abrasive, dense slurries across mineral processing plants. Manufactured by Weir Minerals, part of the Weir Group, the AH pump range covers duties from hydrocyclone feed through regrind, flotation, and tailings, making it one of the most widely installed slurry pump platforms in the global mining industry. Its heavy-wall wet-end construction and replaceable liner system are engineered specifically for continuous operation under severe abrasion.

As the official authorized partner and exclusive regional representative for Weir Group, Seven Star LLC proudly supplies the Warman AH pump range to mining, minerals processing, and industrial customers across Oman and the wider GCC. Every pump shipped is genuine Weir Minerals manufacture, supported locally with sizing guidance, wear-part availability, and technical assistance for the region’s mining and heavy industrial sectors.

Operating Principle

The Warman AH pump moves slurry using a rotating impeller housed within a heavy-wall volute casing, generating centrifugal force that accelerates the slurry outward and converts velocity into pressure as the fluid exits through the discharge. Because slurries carry a high concentration of abrasive solids, every wetted component — impeller, throatbush, and volute liner — is manufactured from wear-resistant metal alloys or elastomers selected to match the specific gravity, particle size, and chemical characteristics of the slurry being handled.

The AH design uses replaceable liners rather than a solid-cast casing, so the wear surfaces exposed to the abrasive slurry stream can be renewed without replacing the entire pump body. This liner-based wet end is the practical feature that keeps lifecycle costs down in continuous mineral processing duty: maintenance crews replace liners and impellers on a planned schedule rather than the pump casing itself, minimizing unplanned downtime and extending the productive life of the installed pump base and reducing the total cost of ownership across the pump fleet over its full service horizon.

Engineering Design of the Warman AH

The Warman AH is available across a wide range of frame sizes to match required flow rates and heads, with adjustable impeller-to-throatbush clearance that lets operators compensate for wear over the liner’s service life without immediately pulling the pump for a full liner change. Bearing assemblies are housed in a separate, sealed frame isolated from the slurry stream, protecting rotating components from the abrasive product being pumped.

Wet-end materials span hard metal alloys for high-density, coarse-particle slurries and natural or synthetic elastomers for fine, less aggressive slurries, with the correct material selection driven by the specific application — a selection process Seven Star LLC’s technical team supports directly for regional customers. Shaft seal options include gland packing, mechanical seals, and centrifugal seal (expeller) configurations, chosen based on the process fluid, available seal water, and maintenance philosophy of the plant, with Seven Star LLC’s technical team available to help regional operators weigh the tradeoffs between each sealing approach.

Key Features

The Warman AH pump delivers the following advantages for continuous mineral processing and heavy industrial slurry duty:

• Heavy-wall, replaceable liner wet end designed for continuous abrasive slurry service.
• Available across a wide range of frame sizes to match flow rate and head requirements.
• Adjustable impeller-to-throatbush clearance compensates for wear between liner changes.
• Choice of hard metal or elastomer wet-end materials matched to slurry density and particle size.
• Sealed bearing assembly isolated from the slurry stream protects rotating components.
• Multiple shaft seal options including packing, mechanical seal, and expeller configurations.
• Proven design installed across mineral processing plants on every continent.
• Covers duties from hydrocyclone feed through regrind, flotation, and tailings handling.

Industrial Applications

The Warman AH pump is the standard workhorse across copper, gold, iron ore, and phosphate processing plants, handling everything from primary grinding circuit discharge to final tailings disposal. In Oman, mining and quarrying operations processing chromite, copper, and construction aggregate rely on heavy-duty slurry pumps of this class to move dense, abrasive process streams reliably across extended production campaigns.

As the officially authorized partner for Weir Group, Seven Star LLC distributes the Warman AH to industrial customers across the Sohar and Salalah economic zones, where desalination pre-treatment, dredging support, and heavy industrial slurry handling all demand pumps engineered for continuous abrasive duty. Oil sands and produced-water solids handling applications across the wider GCC also specify Warman-class pumps for their proven wear life in harsh service.

Technical Specifications

Key technical parameters for the Weir Minerals Warman AH heavy-duty slurry pump:

Request a Quote for Weir Minerals Warman AH Heavy-Duty Slurry Pump

Mining and industrial procurement teams across Oman and the GCC evaluating the Weir Minerals Warman AH pump can request a formal quotation directly from Seven Star LLC. As the authorized partner for Weir Group in Oman and the GCC, Seven Star LLC maintains regional stock of common wear parts, provides technical datasheets on request, and connects customers with our rotating-equipment division for pump sizing, material selection, and installation support. Contact Seven Star LLC today to secure genuine Weir Minerals slurry pumping equipment backed by authorized local support.