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Grundfos Nbg 300-250-500/525 Heating Water Pressurization Centrifugal Pump

Product Details

Brand Name: Grundfos

Model Number: Nbg

Payment & Shipping Terms

Minimum Order Quantity: 1

Price: Negotiable

Packaging Details: Standard Export Plywood Case or Carton

Delivery Time: 5-8 weeks

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

Supply Ability: Peak Season Lead Time: 1-3 months ，Off Season Lead Time: 1 month

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Product Details

Product Description

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Transported Liquids:	Water	Liquid Temperature Range:	0 .. 120 °c
Liquid Temperature During Operation:	20 °c	Density:	998.2 Kg/M³

Transported Liquids:	Water
Liquid Temperature Range:	0 .. 120 °c
Liquid Temperature During Operation:	20 °c
Density:	998.2 Kg/M³

Grundfos Nbg 300-250-500/525 Heating Water Pressurization Centrifugal Pump

NBG 300 - 250 - 500/525 AIAF2AESBAQEWW5

Applications:
1.Commercial heating
2.Commercial air - conditioning
3.Commercial water boosting
4.District heating
5.Industrial cleaning processes
6.Heat supply
7.Desalination
8.Municipal water transmission and distribution
9.Irrigation
10.Water supply for residential areas and buildings
Short - coupled pump in accordance with ISO 2858

NBG horizontal end suction centrifugal pump: suitable for harsh application scenarios
The Grundfos NBG horizontal end suction centrifugal pump is a non self suction, single-stage centrifugal volute pump with an axial suction port, radial discharge port, and horizontal shaft. This pump is highly suitable for various demanding application scenarios and can provide reliable and effective water supply.
Due to the use of a tightly coupled pump design, installation in a limited space is very simple. The main dimensions of the NBG end suction centrifugal pump comply with the ISO2858 standard and are tested according to the ISO909906:2012 acceptance level standard before leaving the factory.

NBG 300-250-500/525 AIAF2AESBAQEWW5

The non self-priming single-stage vortex shell centrifugal pump is designed according to the ISO5199 standard, and its size and rated performance comply with the ISO2858 standard (16 bar). The flange is PN 16 type, and its dimensions comply with EN 1092-2 standard. The water pump is equipped with an axial suction port, a radial discharge port, a horizontal shaft, and a rear pull design, which allows maintenance personnel to disassemble the motor, motor seat, cover, and impeller without loosening the pump casing or pipeline. The unbalanced O-type shaft seal complies with DIN EN 12756 standard. A air-cooled asynchronous motor is tightly coupled to the water pump.

Controller
Frequency converter: None
Pressure sensor: N

Liquid
Liquid being transported: 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: 992 revolutions per minute
Rated flow rate: 667.9 m³/h
Rated head: 35.87 meters
Actual impeller diameter: 525 mm
Nominal impeller diameter: 500
Type of impeller: Standard
Shaft - seal configuration: Single
Main shaft seal: BAQE
Shaft seal code: BAQE
Curve tolerance: ISO9906:2012 3B
Bearing design: Standard

Materials
Pump casing: Cast iron
Pump housing: EN - GJL - 250
Pump casing: ASTM class 35
Wear ring: Brass
CuZn34Mn3AI2Fe1 - C
Impeller: Cast iron
EN - GJL - 200
ASTM class 30
Internal pump - house coating: CED
Shaft: Stainless steel
EN 1.4301
AISI 304

nstallation
Maximum ambient temperature: 40 °C
Maximum operating pressure: 16 bar
Pipe connection standard: EN 1092 - 2
Inlet size: DN 300
Outlet size: DN 250
Pressure rating for pipe connection: PN 16
Bearing lubrication: Grease
Pump housing with feet: Yes
Yes = With support block, No = Without support block: N

Electrical data
Motor model: INNOMOTICS
Rated power - P2: 90 kW
Power supply frequency: 50 Hz
Rated voltage: 3 x 380 - 420/660 - 725 V
Rated current: 160/93 A
Starting current: 820 %
Cos phi - Power factor: 0.85
Rated speed: 992 revolutions per minute
Efficiency: IE4 95.6%
IE efficiency class: IE4
Motor full - load efficiency: 95.6 %
Motor efficiency at 3/4 load: 95.9 %
Motor efficiency at 1/2 load: 95.7 %
Number of motor poles: 6
Enclosure rating (IEC 34 - 5): IP55
Insulation class (IEC 85): F
Motor number: 92848342
Bearing insulation type N - end: CERAMIC SHAFT COATING

Others
Minimum efficiency index, MEI ≥: 0.48
Net weight: 1590 kg
Gross weight: 1660 kg
Shipping volume: 2.27 m³

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