Grundfos Nkg Bare Shaft 300-250-350/306 Water Pump Bare Shaft Pump for Industrial Use

• Customization: Available
• Max.Head: 256 M
• Max.Capacity: 1200 M³/H
• Model NO.: NKG 300-250-350/306
• Driving Type: Motor
• Impeller Number: Single-Stage Pump
• Working Pressure: 25bar
• Influent Type of Impeller: Non - Self - Priming
• Position of Pump Shaft: Horizontal Pump
• Pump Casing Combined: Verticaljoint Surface Pump
• Mounting Height: Non - Self - Priming Single - Stage Volute Centrif
• Impeller: Closed
• Usage: Commercial Buildings
• Number of Poles: 6
• Actual Impeller Diameter: 306mm
• Pump Data Is Based on The Pump Speed on: 1450 Revolutions Per Minute
• Rated Flow Rate: 32.3 M³/H
• Transport Package: Standard Export Plywood Case or Carton
• Specification: 625 kg
• Trademark: Grundfos
• Production Capacity: 100

Product Description

NKG 300 - 250 - 350/306 AY1F2AESBQQEXW5
Serial Number 98495346

 

Applicable for
1.Commercial heating
2.Commercial air - conditioning
3.Commercial water pressure boosting
4.District heating
5.Heating
6.Desalination
7.Surface water intake
8.Municipal water transmission and distribution
9.Irrigation

The bare - shaft pump complies with ISO 2858

 

NKG 300 - 250 - 350/306 AY1F2AESBQQEXW5 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 ISO 2858 standard. The flanges are of PN 16 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.

 

 

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: 970 revolutions per minute
Rated flow rate: 518 m³/h
Pump with motor: N
Rated head: 8.6 meters
Actual impeller diameter: 306 mm
Nominal impeller diameter: 350 mm
Type of impeller: Standard
Main shaft seal: BQQE
Shaft seal code: BQQE
Mechanical seal type: Single
Curve tolerance: ISO9906:2012 3B
Bearing design: Standard
n_min: 500 revolutions per minute
n: 3700 revolutions per minute

Materials                               

Pump casing: Cast iron

Impeller:
Cast iron
EN - GJL - 200
ASTM class 30
Internal pump house coating: CED
Shaft:
Stainless steel
EN 1.4301
AISI 304

 

Installation                              

Maximum operating pressure: 16 bar
Pipe connection standard: EN 1092 - 2
Type of inlet connection: DIN
Type of outlet connection: DIN
Inlet size: DN 300
Outlet size: DN 250
Pressure rating for pipe connection: PN 16
Grouting (Yes/No): N

 

Others                                 

Minimum efficiency index, MEI ≥: 0.70
Net weight: 548 kg
Gross weight: 625 kg
Transport volume: 1.51 m³