NVS

NVS

Self-priming pumps NVS are intended for transport the clear fluids, where the prime condition is safe fluid suction. They are applied in water treating plants, in chemical industry and in shipbuilding works.

Application

Self-priming pumps NVS are intended for transport the clear fluids, where the prime condition is safe fluid suction. They are applied in water treating plants, in chemical industry and in shipbuilding works. In version 102 are applied for transferring the flammable fluids (gasoline, naphtha, etc.) and they are characterized as: Mechanical device of class II category 2 (device for areas with danger of explosion 2 and 1), temperature category T3, intended for explosive atmosphere creates of vapours, gasses or fogs and
they are used for transport of fluids, which their flammable qualities corresponds to gasses of class
IIA.
Flameproof version ex II 2 (1) G X T3

Construction

The NVS pumps consist of standard single-stage pump to which is attached little self-priming pump - self-priming stage. Both are located on common shaft. Shaft is located in two ball bearings. All the NVS pumps are dextrorotatory.
The seal:
- in version 00 is soft cord packing
- in version 100 is mechanical
- in version 102 is mechanical for pumping the flammable substances

Execution

LN - volute, impeller of the main pump and shaft sleeve - grey cast, flooding bushing and shaft bearings placed in self-priming stage - bronze, impeller of self-priming stage and impeller nut - brass, shaft - constructional steel
LB - impeller of the main pump - bronze, other parts as in LN variation

Delivery range

pump with free shaft end
pump with electric motor on base plate
with alternative power according to individual requests of customer

Self-priming spiral

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