The pumps NVF are single-stage, spiral, centrifugal for pressure of PN 16, corresponds with DIN 24 255. This standard dictates connection dimensions and hydraulic parameters of pumps. Pumps from different manufacturers, which satisfy presented standard is possible to replace. Hydraulic part consists of volute casing, there is a closed impeller with single-sided water inlet, with front and back wearing ring and with relieving holes. Mechanical part consists of bearing pedestal, where placed shaft in two radial bearings in version AZ .Bearings is are lubricated with fat. At disassembly of pump it´s not necessary disconnect volute from suction and discharge pipeline. The sense of the pump shaft rotation is clockwise facing the pump from the side of drive.
Seal for packing the hydraulic part:
- mechanical seal according to standard DIN 24960
- soft cord packing
