centrifugal pump dab NKM-G NKP-G
centrifugal pump dab NKM-G NKP-GCantilever monoblock centrifugal pumps with rigid coupling are designed for use in various systems:
- Water supply
- Circulation of hot water in the system heating.
- Circulation of cold water for air conditioning and refrigeration.
- Pumping liquids in agriculture, horticulture and industry.
- Creation of pumping stations
TECHNICAL SPECIFICATIONS
- Compliance with standards: IEC 2-3.
- Protection degree: IP 55.
- Insulation class: F.
- Supply voltage: 3x230/400 V 50 Hz up to 2.2 kW inclusive,
3 x 400 V Δ 50 Hz more than 2.2 kW. - Rotation speed: 1450-2900 rpm.
- Operating range: flow from 1 to 460 m3/h, pressure up to 96 m.
- Pumped liquid: clean, free of solids and abrasive inclusions, non-viscous, non-aggressive, non-crystallized, chemically neutral, with characteristics close to water.
- Liquid temperature range: from-10 °C to +140 °C .
- Maximum ambient temperature: +40 °C.
- Maximum operating pressure: 16 Bar (1600 kPa).
- Flanges: PN 16 DIN 2533.
- Installation: horizontal mounting is allowed or vertical position with the mandatory location of the engine above the hydraulics.
- Special designs on request: pumps for working with other liquids. Electric motors for other voltages and/or frequencies.
DESIGN FEATURES
The hydraulic housing is made of cast iron and meets the requirements of the DIN-EN 733 standard (set DIN 24255), motor support made of cast iron, flanges according to DIN 2533. Closed cast iron impeller dynamically balanced by axial force compensation via balancing holes, impeller neck wear ring to reduce hydraulic losses (available on request ). Pump shaft made of AISI 304 stainless steel. Mechanical seal graphite/silicon carbide standardized to DIN 24960 with EPDM O-rings. The pumps are equipped with an air-cooled asynchronous electric motor: two-pole for the NKP-G model and four-pole for the NKM-G. The rotor rotates on oversized bearings, ensuring low noise levels and long engine life. Motor overload protection must be installed in accordance with current regulations. In case of application with liquids of higher density than water, the power of the motors must be increased proportionally.
