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.
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.
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.
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.
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.