Everllence

Extraction pump

State-of-the-art vacuum drainage
Reliable and self-regulated performance under all flow conditions.

Benefits at a glance

• Non-clogging
• Self-priming
• Self-regulating
• Intermittent operation
• Over 10,000 pumps

in operation worldwide

operation
The pump is vertically mounted and in continuous operation; thus a suction control is not necessary. The pump is self-regulated according to the amount of water to be handled. It operates stable even if there is no medium flow through the pump. A clean-water supply is provided to the bottom end bearing for lubrication and also for sealing against the inrush of process water. In addition, the clean-water supply serves for cooling of the pump when there is no delivery medium flow through the pump.

Design
The NPCV extraction pump is a single-stage centrifugal pump featuring a central inlet and a tangential discharge as well as a vertical shaft, single-stage spiral casing with single flow direction. A deairing line must be installed only between the NPCV 12½ pump and the corresponding vacuum chamber to optimize the medium flow amount through the pump. The bearing assembly comprises a clean-water lubricated, low-maintenance plain bearing at the bottom end, a solid coupling and a fixed bearing in the electric motor at the drive end. This guarantees an exact concentricity.
The pump is driven by a three-phase squirrel-cage motor with air cooling and with a fixed bearing at the drive end. Construction IM V1, enclosure IP55 according to IEC standard or NEMA and main dimensions according to DIN or ANSI.

Material specification

• NPCV-12.5 à grey cast iron casing with stainless steel impeller
• NPCV-12.5X à made completely out of stainless steel