The WEMCO® Screw-Flow centrifugal pump is equipped with a classic single vane screw centrifugal impeller.

WEMCO® applies advanced pump design technology to increase product performance, reduce cost, and improve lead time. The long-established screw centrifugal design provides clog-resistant pumping for trouble free movement of solids, fibrous, and stringy materials. The steep head-capacity curve produced by the impeller provides additional head to help push through any partial blockages.

KEY FEATURES & BENEFITS

High efficiency
Low NPSH requirements
Steep head & capacity curve
Adjustable liners
Solids passage: 2.5 – 7.38 inch
High Chrome Iron impeller & liner
Many sealing arrangements available, including flushed packing, flushed mechanical seals, and flushless tandem seals.

APPLICATIONS

Sludges
Raw & unscreened sewage
Paper stock & wood chips
Wet well cleanup
Crystalline compounds
Bacterial Floc
Easily damaged fruits & vegetables
Coal
Configurations
Horizontal
Vertical
Submersible
Prerotation

SIZE RANGE & DIMENSIONS

3 – 16 inch

PRESSURE CLASS & POWER

Up to 300 ft. (91 m)

TEMPERATURE RANGE

32°F – 180°F (0°C – 82°C)

CAPACITY

15,000 GPM (31400 m3/h)

ADVANTAGES OF THE WEMCO® SCREW-FLOW CENTRIFUGAL PUMP

Low NPSH: The screw portion of the WEMCO® Screw-Flow Centrifugal impeller performs as an inducer, pulling liquid into the impeller, resulting in low NPSH requirements.

SOLIDS HANDLING

The single vane impeller of the WEMCO® Screw-Flow centrifugal pump creates a single channel flow, allowing for larger solids passage. The large solids passage provides better solids handling capabilities than any other pump type. The steep head-capacity curve provides ample reserve pressure to clear temporary clogs.

SLUDGE HANDLING POSITIVE SUCTION

The combination of a low NPSH requirement and large solids channels provides a powerful pump for handling thick sludges. The steep head-capacity curve of the WEMCO® Screw-Flow centrifugal pump also allows for pumping of varying sludge consistencies without the need to change speed. An additional benefit is the reserved head for clearing temporary line blockages.

ADJUSTABLE LINER

Consistent impeller to liner clearance is imperative to the performance of the pump. As the pump components wear, clearance between the impeller and liner can be adjusted to ensure optimal performance.