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Grundfos NBG 250-200-450/455 Non Self Priming Single Stage Volute Centrifugal Water High Flow Volute Casing Pump

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Grundfos NBG 250-200-450/455 Non Self Priming Single Stage Volute Centrifugal Water High Flow Volute Casing Pump

Brand Name : Grundfos

Model Number : NBG 250-200-450/455 AIAF2A1ESBQQEYW3

MOQ : 1

Price : 200-1000

Payment Terms : L/C,D/A,D/P,MoneyGram,Western Union,T/T

Supply Ability : 100

Delivery Time : within 15 workdays

Packaging Details : Wooden Box

Transported Liquids : Water

Liquid Temperature Range : -25 .. 120 °c

Liquid Temperature During Operation : 20 °c

Density : 998.2 Kg/M³

Rated Flow Rate : 658.5 M³/H

Rated Head : 64.1 M

Power Supply Frequency : 50 Hz

Rated Voltage : 3 x 380-400/660-690 V

Net Weight : 1570 Kg

Gross Weight : 1760 Kg

Maximum operating pressure : 16 bar

Maximum ambient temperature : 40 °C

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End-suction close-coupled single-stage pump
NBG 250-200-450/455 AIAF2A1ESBQQEYW3
Number: 93351125


Applications:


  • Commercial heating
  • Commercial air conditioning
  • Commercial water pressure boosting
  • District heating
  • Industrial cleaning processes
  • Heating supply
  • Desalination
  • Municipal water transmission and distribution
  • Irrigation
  • Community and building water supply


Compliance: Short-coupled pump in accordance with ISO 2858


NBG 250-200-450/455 AIAF2A1ESBQQEYW3
The non-self-priming single-stage volute centrifugal pump is designed in accordance with ISO 5199, and its dimensions and rated performance comply with ISO 2858 (16 bar). The flanges are of PN 16 type, with dimensions conforming to EN 1092-2. The pump is equipped with an axial suction port, a radial discharge port, a horizontal shaft, and a back-pull-out design, allowing maintenance personnel to disassemble the motor, motor bracket, cover, and impeller without loosening the pump casing or pipelines. The unbalanced O-type shaft seal meets the requirements of DIN EN 12756. An air-cooled asynchronous motor is closely coupled to the pump.



 Grundfos NBG 250-200-450/455 Non Self Priming Single Stage Volute Centrifugal Water High Flow Volute Casing Pump

Grundfos NBG 250-200-450/455 Non Self Priming Single Stage Volute Centrifugal Water High Flow Volute Casing Pump

Controller:


  • Frequency converter: None
  • Pressure sensor: N


Liquid:


  • Liquid conveyed: Water
  • Liquid temperature range: -25 .. 120 °C
  • Liquid temperature during operation: 20 °C
  • Density: 998.2 kg/m³


Technical Data:


  • Pump speed basis: 1,490 rpm
  • Rated flow rate: 658.5 m³/h
  • Rated head: 64.1 m
  • Impeller actual diameter: 455 mm
  • Impeller nominal speed: 450
  • Impeller type: Standard
  • Shaft seal configuration: Single
  • Main shaft seal: BQQE
  • Shaft seal code: BQQE
  • Curve tolerance: ISO9906:2012 3B
  • Bearing design: Standard


Materials:


  • Pump housing: Cast iron
    • Pump housing: EN-GJL-250
    • Pump housing: ASTM class 35
  • Wear ring: Brass
    • Wear ring material: CuZn34Mn3AI2Fe1-C
  • Impeller: Cast iron
    • Impeller material: EN-GJL-200
    • Impeller material: ASTM class 30
  • Internal pump housing coating: CED
  • Shaft: Stainless steel
    • Shaft material: EN 1.4462


Installation:


  • Maximum ambient temperature: 40 °C
  • Maximum operating pressure: 16 bar
  • Pipeline connection standard: EN 1092-2
  • Inlet size: DN 250
  • Outlet size: DN 200
  • Pressure rating for pipe connection: PN 16
  • Bearing lubrication: Grease
  • Pump casing with support feet: Yes
  • Yes = With support block, No = Without support block: N


Electrical Data:


  • Motor model: 315LA
  • Rated power - P2: 160 kW
  • Power supply frequency: 50 Hz
  • Rated voltage: 3 x 380-400/660-690 V
  • Rated current: 283-269/163-156 A
  • Starting current: 770 %
  • Cos phi - Power factor: 0.89
  • Rated speed: 1,490 rpm
  • Efficiency: IE4 96.6%
  • IE efficiency class: IE4
  • Motor full-load efficiency: 96.6 %
  • Motor efficiency at 3/4 load: 96.4 %
  • Motor efficiency at 1/2 load: 95.5 %
  • Motor pole count: 4
  • Enclosure rating (IEC 34-5): 55 (Protect. water jets/dust)
  • Insulation class (IEC 85): F
  • Motor number: 92555138
  • Bearing insulation type N end: COATED RING


Other:


  • Minimum Efficiency Index, MEI ≥: 0.44
  • Net weight: 1,570 kg
  • Gross weight: 1,760 kg
  • Transport volume: 3.33 m³


Grundfos NBG 250-200-450/455 Non Self Priming Single Stage Volute Centrifugal Water High Flow Volute Casing Pump

Grundfos NBG 250-200-450/455 Non Self Priming Single Stage Volute Centrifugal Water High Flow Volute Casing Pump

Grundfos NBG 250-200-450/455 Non Self Priming Single Stage Volute Centrifugal Water High Flow Volute Casing Pump

Grundfos NBG 250-200-450/455 Non Self Priming Single Stage Volute Centrifugal Water High Flow Volute Casing Pump






Product Tags:

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