Weir Pumps / The Weir Group Heavy Slurry & Positive Displacement Pumps

Global supply of Warman heavy-duty centrifugal slurry pumps, GEHO high-pressure piston diaphragm pumps, and Linatex wear-resistant rubber liners for mining and mineral processing.

Warman® MCR / MCR-M / MCU Mill Circuit Slurry Pumps

Warman MC heavy duty centrifugal slurry pumps are engineered for aggressive SAG and ball mill discharge duties and cyclone feed lines. The wet end features replaceable heavy elastomer or Ultrachrome high chrome liners, while innovative pre-swirl throatbush vanes reduce turbulence and wear.

Flow rates up to 10,000 m³/h engineered for severe mill discharge lines
Developed dynamic pump head extends up to 45 meters in severe duties
Suction inlet diameters up to 750 mm handle large abrasive rock fragments
Wear-resistant Ultrachrome high chrome alloy and Linatex rubber liners

Warman® AH® Heavy Duty Slurry Pumps & WRT® Upgrades

Warman AH heavy duty slurry pumps represent the global benchmark for mineral processing and abrasive slurries. The advanced WRT retrofit package combines a streamlined 4-vane impeller and matching throatbush, delivering enhanced hydraulic efficiency and extending wear life by up to 50%.

Total head up to 73 meters per stage in demanding slurry processes
Volumetric capacity up to 5,000 m³/h for continuous plant operations
Discharge branch sizes from 25 to 450 mm across modular frame sizes
Documented field wear life improvements up to 50% on WRT components

GEHO® TZPM Triplex Piston Diaphragm Slurry Pumps

GEHO TZPM triplex single-acting positive displacement pumps are built for long-distance pipeline transport of abrasive mineral slurries and tailings disposal. A pre-formed diaphragm completely isolates drive pistons from abrasive solids, ensuring industry-leading operational availability up to 98%.

Operating pressures up to 300 bar for long distance slurry pipelines
Continuous flow capacities up to 1,500 m³/h in heavy mineral transport
Handles solids concentrations to 85% and temperatures up to 250 °C
Demonstrated equipment operational availability benchmarked at 98%

Warman® WGR® Sand & Aggregate Slurry Pumps

The second generation Warman WGR centrifugal slurry pump is purpose-designed for sand, gravel, and aggregate processing plants. Replaceable Linatex premium rubber liners provide outstanding wet abrasion resistance, while an advanced modular wet end streamlines scheduled maintenance turnaround.

Flow rates up to 3,500 m³/h for quarry sand and gravel washing plants
Developed dynamic pump head reaching 50 meters in continuous duties
Replaceable wet end liners molded from premium Linatex natural rubber
Streamlined modular wet end configuration for rapid scheduled overhauls

Linatex® Wear Resistant Natural Rubber Liners & Pump Parts

Linatex premium rubber slurry pump liners and wet end components are manufactured with 95% natural rubber using specialized liquid phase compounding. The material absorbs impact energy from fine abrasive particles, delivering superior wear resistance compared to conventional hard metal alloys.

Proprietary 95% natural rubber compound delivers resilience and strength
Exceptional wear resistance against high-velocity fine particle slurries
Precision molded volute liners, throatbush inserts, and side liners
Tight dimensional tolerances ensure dependable sealing within pump bodies

Engineering Field Service, Overhaul & Commissioning

Specialized engineering field service, technical inspection, and scheduled overhauls for Weir, Warman, and GEHO slurry pump installations are delivered under contract. Capabilities include precision laser shaft alignment, vibration analysis, impeller clearance adjustment, and full commissioning.

High precision laser drive shaft alignment eliminating parallel offsets
Spectral vibration diagnostics and thermal monitoring on bearing blocks
Comprehensive wet end refurbishment replacing worn volutes and impellers
Full dynamic commissioning under process slurry to verify head and flow

Vibration analysis and dynamic rotor balancing on Warman slurry pumps

Centrifugal slurry pumps operating on heavy mill circuits experience severe continuous dynamic forces. Plant field technicians perform three-axis vibration measurements on bearing assemblies in compliance with ISO vibration standards.

Root-mean-square velocity and acceleration peak factors are monitored to detect early bearing raceway spalling and rolling element fatigue. When impeller vane wear causes rotor imbalance, on-site dynamic balancing is carried out without removing the complete pump assembly from the foundation.

This proactive vibration control prevents shaft fatigue fractures, protects bearing housing bores, and extends the operational life of heavy duty pump drives.

Throatbush axial clearance measurement and WRT hydraulic adjustment

During aggressive slurry pumping, the front clearance between the rotating impeller and the stationary throatbush increases due to sliding and impact abrasion. When this axial gap exceeds design limits, internal slurry recirculation intensifies, lowering total head and accelerating localized wear.

Technicians take micrometer gap readings across the suction face and adjust the WRT throatbush axially using the heavy duty adjustment studs on the pedestal frame.

Restoring a uniform operating clearance across the suction face recovers hydraulic efficiency, minimizes vortex scouring, and substantially lengthens wet end operating intervals.

Pressure testing protocol and diaphragm inspection on GEHO triplex pumps

GEHO TZPM triplex piston diaphragm pumps generate pipeline discharge pressures up to 300 bar, with durable pre-formed elastomer diaphragms isolating the hydraulic drive from abrasive tailings slurry.

Routine maintenance requires visual inspection of diaphragm surfaces for delamination, verification of acoustic leak detection sensors, and hydrostatic pressure testing of the diaphragm housings.

Technicians verify the seating surfaces of suction and discharge check valves, inspecting polyurethane inserts and hardened valve cones. Regular vacuum filling of the hydraulic drive eliminates air pockets and ensures 98% operational availability.

Wear profile inspection and replacement procedure for Linatex rubber liners

Warman WGR and MCR pumps equipped with Linatex natural rubber liners achieve exceptional wear performance in fine particle handling. Ultrasonic thickness testing is conducted across high-velocity impact regions, including the volute cutwater and suction liner throat areas.

When the remaining rubber thickness reaches allowable wear limits, the split body liners are replaced without disturbing the main discharge piping.

Replacement rubber liners are seated into the alignment grooves of the outer ductile iron housing and secured with torque-calibrated bolts to guarantee leak-tight sealing.

Drive shaft alignment and thermal monitoring of heavy bearing assemblies

Torque transmission from high-power electric motors to slurry pump shafts requires precise shaft alignment. Service specialists perform laser alignment across flexible drive couplings to precision tolerances, eliminating angular and parallel offsets that induce premature bearing failure.

Simultaneously, bearing operating temperatures are monitored using infrared thermography during continuous full-load production within design thermal specifications. Labyrinth seals and grease purge rings are inspected to prevent abrasive slurry ingress into the oil lubrication chamber.

Commissioning sequence, hydraulic verification and operating point calibration

Commissioning heavy slurry pump installations following major maintenance requires a structured testing sequence.

The procedure begins with uncoupled motor rotation verification, hydrostatic pressure testing of the assembled pump body, and gland seal water supply verification at the specified flow and pressure.

Once process slurry fills the sump, the pump is started at reduced speed using a variable frequency drive before ramping up to the design operating point.

Differential head, flow rate, and drive motor power draw are recorded to calibrate the actual pump performance curve against factory specifications.

Weir Pumps and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of Weir Pumps and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.