NKP-G 50-125/135/A/BAQE/5,5/2 IE3

GENERAL DATA

Applications

Enbloc, centrifugal motor-driven pumps with coupling designed for a wide range of applications such as:
- supplying water
- the circulation of hot water for central heating
- the circulation of cold water for air conditioning and refrigerating
- the transfer of liquids in agriculture, horticulture and in industries
- the implementation of pumping systems

Constructional features of the pump

Single-stage, cast iron spiral body made to DIN-EN 733 (formerly DIN 24255), cast iron support, flanges in accordance with DIN 2533 and DIN 2532 for DN 200. Impeller in cast iron, encased and dynamically balanced with compensation of the axial thrust by means of balancing holes, operating (on request) with interchangeable wear rings. AISI 304 stainless steel pump shaft.
Seal: standardised mechanical seal made to DIN 24960 in carbon/ carborundum with O rings in EPDM.
Constructional features of the motor Closed, asynchronous motor with external ventilation, construction type B3/B5, 2 poless for NKP and 4 poles for NKM.
The rotor is mounted on extra large ball bearings to guarantee low noise running and durability.
We recommend using overload protection for the motor, in accordance with current norms.
In the case of liquids denser than water, the motors must be proportionally more powerful.
Construction in compliance with the CEI 2-3 standards.
Protection level: IP 55
Insulation class: F

- Rotation speed: 1450 - 2900 1/min.

- Operating range: from 1 to 500 m3/h with a head of up to 100 m.

- Pumped liquid: without solid or abrasive substances, not viscous, not aggressive, not crystallised and chemically neutral, close to water characteristics.

- Liquid temperature range: from -10°C to +140°C.

-Maximum ambient temperature: +40°C.

-Maximum working pressure: 16 bar - 1600 kPa (for DN 200 max 10 bar).

- Flanging: PN 16 DIN 2533, PN 10 DIN 2532 for DN 200

- Installation: normally horizontal or vertical provided the motor is always above the pump.

- Special version on request: pumps for liquid other than water. Other voltages and/or frequencies.