NK 350 - 350/416 - 382 AA1F1SBESBQQEYW3
Applicable for:
1.Commercial heating
2.Commercial air conditioning
3.Commercial water boosting
4.District heating
5.District cooling
6.Machining
7.Process water distribution
8.Heating
9.Cooling
10.Industrial water supply and transportation
11.Process water treatment
12.Desalination
13.Surface water intake
14.Drinking water treatment
15.Municipal water transmission and distribution
16.Irrigation
17.Water supply for residential areas and buildings
18.Sewage treatment
Standard pump compliant with EN 733
Customizable NK end - suction pumps for demanding applications.
The Grundfos NK end - suction long - coupled pump is a non - self - priming single - stage centrifugal volute pump with an axial suction port, a radial discharge port, and a horizontal shaft. If you need a versatile pump suitable for a variety of demanding applications, the NK/NKG ensures reliable and efficient supply.
Thanks to the use of a spacer coupling, the long - coupled pump is designed for easy maintenance. The main dimensions of the NK pump comply with the EN733 standard. All Grundfos end - suction pumps are tested according to the acceptance grade standard of ISO 9906:2012 before leaving the factory.
NK 350 - 350/416 - 382 AA1F1SBESBQQEYW3
The non - self - priming single - stage volute centrifugal pump is designed in accordance with the ISO 5199 standard, and its dimensions and rated performance comply with the EN 733 standard. The flanges are of PN 10 type, and their dimensions conform to the EN 1092 - 2 standard. The pump has an axial suction port, a radial discharge port, and a horizontal shaft. It adopts a back - pull - out design, enabling maintenance personnel to disassemble the coupling, bearing bracket, and impeller without loosening the motor, pump casing, and pipes. The unbalanced O - ring shaft seal meets the DIN EN 12756 standard. An air - cooled, base - mounted asynchronous motor is installed on the pump. The pump body and the motor are mounted on the same base frame. |
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Controller
Frequency converter: None
Pressure sensor: N
Liquid
Liquid being transported: Water
Liquid temperature range: - 25..120 °C
Liquid temperature during operation: 20 °C
Density: 998.2 kg/m³
Technology
Pump speed based on which pump data is obtained: 1485 revolutions per minute
Rated flow rate: 1917 m³/h
Pump with motor: Y
Rated head: 34.45 meters
Actual impeller diameter: 399 mm
Nominal impeller diameter: 350
Main shaft seal: BQQE
Shaft seal code: BQQE
Mechanical seal type: Single
Curve tolerance: ISO9906:2012 2B
Bearing design: Standard
Materials
Pump casing: Ductile iron
Pump housing: EN 1563 EN - GJS - 500 - 7
Pump housing: ASTM 70 - 50 - 05
Impeller: Stainless steel
EN 1.4308
ASTM A351 CF8
Internal pump - house coating: Painting
Shaft: Steel
EN 1.0503/1.4301
AISI 1045/304
Installation
Maximum ambient temperature: 40 °C
Maximum operating pressure: 10 bar
Pipe connection standard: EN 1092 - 2
Type of inlet connection: DIN
Type of outlet connection: DIN
Inlet size: DN 400
Outlet size: DN 350
Pressure rating for pipe connection: PN 10
Coupling type: Flexible w/o spacer
Base frame design: C - channel
Code for base frame: 569
Grouting (Yes/No): Y
Electrical data
Motor model: 315L
Rated power - P2: 200 kW
Power supply frequency: 50 Hz
Rated voltage: 3 x 380 - 400D/660 - 690Y V
Rated current: 352 - 334/202 - 194 A
Starting current: 710 %
Cos phi - Power factor: 0.90
Rated speed: 1485 revolutions per minute
Efficiency: IE3 96.0%
IE efficiency class: IE3
Motor full - load efficiency: 96.0 %
Motor efficiency at 3/4 load: 95.9 %
Motor efficiency at 1/2 load: 95.0 %
Number of motor poles: 4
Enclosure rating (IEC 34 - 5): 55 (Protect. water jets/dust)
Insulation class (IEC 85): F
Motor number: 99547691
Bearing insulation type N - end: Steel Bearing
Others
Minimum efficiency index, MEI ≥: 0.70
Net weight: 2270 kg
Gross weight: 2430 kg
Shipping volume: 5.6 m³
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