NVF

NVF

Pumps are intended for pumping clean or slightly mechanically polluted fluids with contain compact of dry solids non-abrasive particles up to 2% of the weight.

Application

Pumps are intended for pumping clean or slightly mechanically polluted fluids with contain compact of dry solids non-abrasive particles up to 2% of the weight, or with contain of do 5% of liquid weight. The pumps are intended for transport of clear, well and fluvial water, of condensate in hot-water heating systems.

Construction

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

Execution

LC - volute casing, impeller, stuffing box and housing pedestal - grey cast iron, shaft - constructional steel, shaft sleeve - stainless steel.

Selection of pump material version is according to pumping liquid

Delivery range

pump with free shaft end
pump with electric motor on base plate connecting through coupling or monoblok version
with alternative power according to individual requests of customer

Spiral

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