WEMCO Pump

Heavy-duty Torque-Flow vortex pumps, Screw-Flow centrifugal pumps, and Hydrogritter grit separation systems from WEMCO Pump (WEMCO).

WEMCO Torque-Flow Model C Vortex Grit and Slurry Pumps

WEMCO Torque-Flow Model C vortex grit pumps handle severe abrasive slurry duties. The recessed cup impeller forms a hydraulic vortex, diverting solid particles away to a sacrificial suction piece. Wet-end elements are made of High-Chrome or Ni-Hard alloy to minimize wear.

Recessed cup-type impeller passes pipe-sized solids without clogging
Sacrificial suction piece deflects abrasive wear from pump housing
High-Chrome or Ni-Hard wet-end construction engineered for severe slurries
Heavy-duty bearing assemblies with L-10 operational life over 100,000 h

WEMCO Torque-Flow Model CE Heavy-Duty Sludge Pumps

WEMCO Torque-Flow Model CE heavy-duty sludge pumps handle dense slurries loaded with grit. The rimmed radial vane impeller minimizes wear on the volute, while increased wall thickness in critical zones extends equipment service life during demanding slurry transfer duties.

Rimmed radial vane impeller designed to minimize hydrodynamic wear
Reinforced volute wall thickness in areas subject to maximum erosion
Optional CEX impeller variant providing steeper head-capacity curve
Self-venting volute housing with High-Chrome abrasion-resistant wet end

WEMCO Torque-Flow Model E and EL Solids-Handling Pumps

WEMCO Torque-Flow Model E and compact Model EL pumps handle wastewater with large soft and fibrous solids. The recessed trimmable radial impeller adjusts flow performance to exact system requirements, eliminating jamming and blockages in low-flow municipal systems.

Vortex action allows unobstructed passage of large fibrous solids
Trimmable radial vane recessed impeller for precise operating duty tuning
Compact Model EL footprint with direct flange motor mounting support
Wet-end material options in heavy-duty grey iron or stainless steel alloy

WEMCO Torque-Flow Model S Submersible Vortex Pumps

WEMCO Torque-Flow Model S submersible vortex pumps are built for continuous underwater operation in wet wells and grit basins. Units feature tandem mechanical shaft seals for motor protection and mounting legs integrated directly into the durable pump housing.

Built for continuous submerged duty pumping grit slurries from wet wells
Dual mechanical shaft seals in oil chamber provide motor barrier protection
Sturdy mounting legs integrated directly into the heavy pump housing structure
Threaded or flanged discharge connections for flexible pipeline integration

WEMCO Screw-Flow Screw-Centrifugal Sludge Pumps

WEMCO Screw-Flow pumps feature a single-vane spiral impeller operating as an inducer. The unit provides low-shear handling of dense sludges without damaging sensitive flocs, offering large spherical solids passage from 2.5 to 7.38 inches in demanding sludge duties.

Single-vane screw impeller functions as an inducer for smooth suction entry
Low NPSH requirements with gentle handling of viscous biological sludges
Large spherical solids passage from 2.5 to 7.38 inches preventing clogging
Flushless tandem mechanical seals engineered for zero external water flush

WEMCO Hydrogritter Grit Removal and Dewatering Systems

WEMCO Hydrogritter systems combine an abrasion-resistant Torque-Flow pump, cyclone separator, and dewatering spiral classifier. The system extracts up to 95 percent of fine grit, handling flow rates from 220 to 1570 GPM per cyclone to protect downstream processing equipment.

Separates and dewaters up to 95 percent of fine mineral grit down to 150 mesh
Processes slurry throughput from 220 to 1570 GPM per cyclone unit
Inclined spiral classifier discharges dewatered sand ready for easy handling
Shields downstream digesters, valves, and pipelines from heavy abrasive wear

Vortex wet-end hydraulic design and erosion deflection in WEMCO Model C pumps

WEMCO Torque-Flow Model C vortex grit pumps handle severe fluids without direct contact between abrasive solids and impeller blades.

The cupped impeller is completely recessed into the rear volute out of the primary flow channel, creating a powerful hydraulic vortex that draws grit slurries directly toward the discharge nozzle.

Hydrodynamic wear is intentionally diverted to a heavy sacrificial suction ring that absorbs slurry impact and shields the volute housing from premature erosion.

All wet-end components are made of High-Chrome iron or Ni-Hard alloy, ensuring continuous operating reliability when pumping heavy mineral grit from municipal grit chambers.

Heavy grit-laden sludge transfer and volute geometry in WEMCO Model CE units

Engineered for dense primary sludge and grit-laden waste streams, the WEMCO Torque-Flow Model CE features an advanced wear-reducing wet end.

The radial vortex impeller incorporates an integrated peripheral rim that stabilizes hydraulic flow patterns and suppresses destructive secondary eddies along the volute perimeter. Housing walls feature reinforced section thicknesses in areas subject to peak particulate impingement.

For high-head pipeline applications, the unit can be equipped with an optional CEX impeller that generates a steeper head-capacity curve, maintaining positive forward movement through variable slurry line pressures without plugging.

Clog-free large soft solids handling in WEMCO Model E and EL vortex pumps

WEMCO Torque-Flow Model E and compact Model EL pumps are designed for transfer duties requiring the unobstructed passage of large compressible solids, rags, and fibrous debris.

With a fully open fluid pumping chamber, solids matching the diameter of the discharge piping transit cleanly through the unit without bridging or wrapping around vanes. The radial recessed impeller can be machined and trimmed to precisely match calculated system discharge heads.

For space-constrained wet-well installations, the Model EL version features a direct motor-mounted design that significantly reduces the overall foundation footprint.

Submersible solids pumping and wet-well operation with WEMCO Model S units

Engineered for submerged collection sumps, grit collection channels, and pump wet wells, WEMCO Torque-Flow Model S submersible pumps provide continuous underwater duty handling abrasive liquids and hot waste streams.

Reliable electrical insulation and motor protection are secured through tandem mechanical face seals operating within a monitored oil barrier chamber, preventing grit penetration into bearings.

The pump features sturdy support legs integrated directly into the bottom housing, allowing direct floor placement in deep collection sumps without complex mounting frameworks or guide rails.

Screw-centrifugal inducer hydraulics and low-shear transfer in WEMCO Screw-Flow

WEMCO Screw-Flow pumps combine positive-displacement screw feeding with centrifugal velocity development. The single continuous spiral vane operates as an inducer at the suction entrance, gently drawing dense sludges with high solids contents without flow separation.

Fluid experiences minimal shear stress as it glides through the wide single channel, preserving delicate biological flocs and polymer structures in municipal wastewater processing.

Featuring exceptionally low NPSH requirements and spherical solids clearance from 2.5 to 7.38 inches, the pump completely prevents fibrous rags from binding on the shaft.

Preventive maintenance, overhaul protocols, and field service for WEMCO pumps

Engineering services for WEMCO pumps encompass comprehensive preventive maintenance, on-site vibration monitoring of bearing housings, dynamic balancing of recessed impellers, and complete hydraulic wet-end overhauls.

Technical specialists inspect sacrificial wear rings, install flushless mechanical seals, align motor drive couplings using precision laser tools, and perform commissioning with full hydraulic validation across industrial wastewater and mining facilities under direct service contracts.

WEMCO Pump 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 WEMCO Pump and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.