Warman Centrifugal Slurry Pump

• There are a large number of differing pump types used in the pumping of slurries.Positive displacement and special effect types such as Venturi eductors are used butby far the most common type of slurry pump is the centrifugal pump. 
• The centrifugal slurry pump utilises the centrifugal force generated by a rotating impeller to impart energy to the slurry in the same manner as clear liquid type centrifugal pumps.However, this is where the similarities end.
• Centrifugal slurry pumps need to consider impeller size and design, its ease of maintenance, the type of shaft seal to be used and the choice of the optimum materials.This is needed to withstand wear caused by the abrasive, erosive and often corrosive attack on the materials. Many other important considerations are also required.
• The centrifugal slurry pump must be designed to allow the passage of abrasive particles which can at time be extremely large.Slurry pumps therefore need much wider and heavier impellers to accommodate the passage of large particles. They must also be constructed in special materials to withstand the internal wear caused by the solids.

• The answer is Warman AH series,which have a 60 years history and the standard of horizontal centrifugal slurry pump in mining,mineral processing.
• They are generally used for slurries containing high concentrations of erosive solids or where an extremely heavy duty pump is required.
• All Warman standard seal options are available; centrifugal, gland or mechanical types to include the Warman full flush and low flow seal options.
• Pump discharge sizes range from 1 inch to 18 inches.
• A range of alternative drive frames are available to accommodate widely varying power demand requirements.

It's the ‘SP/SPR’ type is of a vertical cantilevered design that features hard alloy wear parts or full elastomer protection on all submerged components. This allows this pump to be used in highly corrosive applications. Available in sizes 40 mm (1.5 inches) up to 250 mm (10 inches).

• The Warman ‘G’ type gravel pumps are typically used for pumping gravel, dredging or pumping solids too large to be handled by Type ‘AH’ pumps. The design features a hard metal casing and wear components and are capable of passing extremely large particles by larger impellers and heavier casing construction.
• The Warman ‘GH’ range is again similar in construction to ‘G’ Types, but features larger impeller diameters than the ‘G’ range and incorporates a heavily reinforced casing design to allow pumping of heads up to 260 ft. Typically used in dredging applications where long discharge distances are required.

The Warman ‘AHP’ pumps have the same hydraulic performance as the Type ‘AH’ pumps and normally use the same liners and impellers. The same performance curves are also applicable. These pumps are used where high pressure ratings are required,usually in multi-stage pump installations and feature heavily reinforced outer casings to contain high internal pressures (up to 500 psi working pressure).(Higher ratings available in AHPP)

• The ‘L’ series pumps are designed essentially for  higher flow ranges with discharge sizes up to 650 mm (28.0 inches).
• Alternative drive frame sizes are available in all models to accommodate varying power demand requirements interchangeable with most other Warman models.

There is a horizontal froth pump,type Warman AHF which consist of the AH pumps fitted with a new cover plate,throatbush, and impeller to provide an enlarged suction.This enlarged intake enhances the ability of this horizontal pump to handle frothy slurries successfully. The new impeller is of the semi-open design with specially designed vanes to positively feed the frothy mixture to be pumped. Discharge diameters range from 3 inches to 14 inches.

The answer is YES. AlphaFlo® supply lot range of slurry pumps are interchangeable with OEM Weir Warman®.

AlphaFlo®  slurry pumps have been rigorously reverse engineered using  2D 3D modeling. First article inspection involves comparison to OEM parts followed by fit & material testing. All impellers have been performance tested to certify them against OEM performance.