Grundfos Nkge 65-50-125/105 Water Pump Commercial Heating

• Customization: Available
• Max.Head: 26 M
• Max.Capacity: 45 M³/H
• Model NO.: NKGE NKGE 65-50-125/105
• Driving Type: Motor
• Impeller Number: Single-Stage Pump
• Working Pressure: 16bar
• Influent Type of Impeller: Single Suction Pump
• Position of Pump Shaft: Horizontal Pump
• Pump Casing Combined: Horizontal Split Pumps
• Mounting Height: Non - Self - Priming Single - Stage Centrifugal Vo
• Impeller: Closed
• Usage: Commercial Heating
• Transported Liquids: Water
• Liquid Temperature Range: 0 .. 120 °c
• Liquid Temperature During Operation: 20 °c
• Density: 998.2 Kg/M³
• Transport Package: Standard Export Plywood Case or Carton
• Specification: 116 kg
• Trademark: Grundfos
• Production Capacity: 100

Product Description

NKGE 65 - 50 - 125/105 AA1F2KESBAQEHWB
Serial Number 98932536

 

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

Standard pump with MGE motor, complying with ISO 2858 standard

High - efficiency NKGE end - suction pumps suitable for demanding applications
The Grundfos NKGE 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. When you need a pump for applications with harsh variations in flow requirements, the NKGE can be equipped with an 11 kW permanent - magnet MGE motor, an integrated variable - frequency drive, and IE5 efficiency, ensuring high efficiency at all times.
The design of the long - coupled pump, with an intermediate coupling, makes it easy to maintain. The main dimensions of the NKGE pump comply with the ISO 2858 standard. All Grundfos end - suction pumps are tested against the acceptance class standard of ISO9906:2012 before leaving the factory.
 

NKGE 65 - 50 - 125/105 AA1F2KESBAQEHWB The non - self - priming single - stage volute centrifugal pump is designed in accordance with the ISO5199 standard, and its dimensions and rated performance comply with the ISO 2858 standard. The flanges are of the PN 16 type, and their dimensions conform to the EN 1092 - 1 standard. This water 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 - type shaft seal meets the DIN EN 12756 standard. An air - cooled, base - mounted permanent - magnet synchronous motor is installed on the water pump. The pump body and the motor are mounted on the same base frame. The motor's terminal box contains a frequency converter and a PI controller. This enables the system to continuously adjust the motor speed, allowing the water pump to be adjusted to the optimal operating state according to environmental conditions.

 

Controller                               
Frequency converter: Built-in
Pressure sensor: N

 

Liquid                                    
Liquid being conveyed: Water
Liquid temperature range: 0.. 120 °C
Liquid temperature during operation: 20 °C
Density: 998.2 kg/m³

 

Technology                                     
Pump speed based on which pump data is obtained: 2901 revolutions per minute
Rated flow rate: 35.71 m³/h
Pump with motor: Y
Rated head: 10.01 m
Actual impeller diameter: 105 mm
Nominal impeller diameter: 125 mm
Type of impeller: Standard
Main shaft seal: BAQE
Shaft seal code: BAQE
Mechanical seal type: Single
Curve tolerance: ISO9906:2012 3B2
Bearing design: Standard

 

Materials                        
Pump casing: Stainless steel
Pump housing: EN 1.4408
Pump casing: ASTM CF8M
Wear ring: Stainless steel
                  EN 1.4517
                  ASTM CD4MCuN
Flange: Cast iron
             EN - GJS - 500 - 7
             ASTM 70 - 50 - 05
Impeller: Stainless steel
               EN 1.4408
               ASTM CF8M
Internal pump house coating: No coating

Shaft: Stainless steel
           EN 1.4401
           AISI 316
 

Installation                          
Ambient temperature range: -20.. 50 °C
Maximum operating pressure: 16 bar
Pipe connection standard: EN 1092 - 1
Type of inlet connection: DIN
Type of outlet connection: DIN
Inlet size: DN 65
Outlet size: DN 50
Pressure rating for pipe connection: PN 16
Coupling type: Flexible w/o spacer
Base frame design: EN/ISO
Code for base frame: 3B ST
                                   Grouting (Yes/No): N

 

Electrical Data                           
Motor model: 90SC
Rated power - P2: 1.5 kW
Power supply frequency: 50 Hz
Rated voltage: 3 x 380 - 500 V
Rated current: 2.9 - 2.4 A
Cos phi - Power factor: 0.92 - 0.85
Rated speed: 360 - 4000 revolutions per minute
IE efficiency class: IE5
Motor full - load efficiency: 88.9 %
Number of motor poles: 2
Enclosure rating (IEC 34 - 5): IP55
Insulation class (IEC 85): F
Motor serial number: 99306737
Bearing insulation type N - end: Steel Bearing

 

Others                           
Minimum efficiency index, MEI ≥: 0.48
Net weight: 103 kg
Gross weight: 116 kg
Transport volume: 0.261 m³