Grundfos NKE 50-250/263 AA2F2AESBQQEKWA

Product ID: 99099330

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Grundfos NKE 50-250/263 AA2F2AESBQQEKWA
Part Number: 99099330
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Grundfos NKE 50-250/263 AA2F2AESBQQEKWA

Non-self-priming, single-stage, centrifugal pump designed according to ISO 5199 with dimensions and rated performance according to EN 733. Flanges are PN 16 with dimensions according to EN 1092-2. The pump has an axial suction port, a radial discharge port and horizontal shaft. It is of the back pull-out design enabling removal of the motor, coupling, bearing bracket and impeller without disturbing the pump housing or pipework. The unbalanced rubber bellows seal is according to DIN EN 12756. The pump is fitted with a foot-mounted, fan-cooled, permanent-magnet synchronous motor. Pump and motor are mounted on a common base frame. The motor includes a frequency converter and PI controller in the motor terminal box. This enables continuously variable control of the motor speed, which again enables adaptation of the performance to a given requirement.

SpecificationValue
Controls:
Frequency converter:  Built-in
Pressure sensor:  N

Liquid:
Pumped liquid:  Water
Liquid temperature range:  -25 .. 120 °C
Selected liquid temperature:  20 °C
Density:  998.2 kg/m³

Technical:
Pump speed on which pump data are based:  1450 rpm
Rated flow:  46.8 m³/h
Pump with motor (Yes/No):  Y
Rated head:  19.4 m
Actual impeller diameter:  263 mm
Nominal impeller diameter:  250
Primary shaft seal:  BQQE
Code for shaft seal:  BQQE
Mechanical seal type:  Single
Curve tolerance:  ISO9906:2012 3B2
Bearing design:  Standard

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

Installation:
Range of ambient temperature:  -20 .. 50 °C
Maximum operating pressure:  16 bar
Pipe connection standard:  EN 1092-2
Type of inlet connection:  DIN
Type of outlet connection:  DIN
Size of inlet connection:  DN 65
Size of outlet connection:  DN 50
Pressure rating for connection:  PN 16
Coupling type:  Flexible w/spacer
Base frame design:  EN/ISO
Code for base frame:  5
Grouting (Yes/No):  N

Electrical data:
Motor type:  112ME
Rated power - P2:  4 kW
Mains frequency:  50 Hz
Rated voltage:  3 x 380-500 V
Rated current:  7.70-6.00 A
Cos phi - power factor:  0.92-0.87
Rated speed:  180-2200 rpm
IE Efficiency class:  IE5
Motor efficiency at full load:  90.3 %
Number of poles:  4
Enclosure class (IEC 34-5):  IP55
Insulation class (IEC 85):  F
Motor No:  93137619
Bearing insulation type N-end:  Steel Bearing

Others:
Minimum efficiency index, MEI ≥:  0.70
Net weight:  144 kg
Gross weight:  165 kg
Shipping volume:  0.44 m³
Country of origin:  HU
Custom tariff no.:  84137059
Language on pump nameplate:  GB

Spare Parts

Part NumberProduct Name
96039654Kit, Shaft
96579598Kit, Bearing
96810102Spare, Wear ring
96939128Kit, Nut

Applications

  • Commercial air conditioning — Improve user comfort and reduce life-cycle costs with intelligent pumps that integrate easily into your air-based or hydronic cooling system.
  • Commercial heating — In a commercial heating system, energy-efficient pumps are only half the story. But with the right system design, you can truly reap the benefits and significantly reduce the energy bill.
  • Commercial water pressure boosting — Ensuring optimal water pressure can be a challenge. However, you can overcome that challenge by means of an efficient and reliable booster system, which communicates with the entire system, and thus reducing life-cycle costs.
  • Community water supply — Reliable, sustainable and low-risk community water systems from source to tap, including water management and revenue collection systems, for low-income remote or informal urban settlement areas in developing countries.
  • Desalination — Desalination processes require great amounts of power and chemical products, and Grundfos supplies desalination and reverse osmosis pumps that are highly efficient and corrosion resistant to cope with the stress of the operating environment.
  • District cooling — Cooling is at the very centre of a wide range of industrial applications and it is ever expanding, replacing individual chiller systems in buildings. With a host of solutions, Grundfos contributes directly to the production of cooling for buildings and industries.
  • District heating — District heating systems distribute heat to residential, commercial and industrial buildings. Grundfos offers a variety of efficient and reliable pumps that contribute to making district heating one of the most popular heating systems in the world.
  • Drinking water treatment — Drinking water treatment is technology-driven and heavily regulated, and you need a partner who offers pump, dosing and disinfection solutions for all water treatment processes at the water treatment plant.
  • Industrial cooling — Industrial applications, such as machining processes and heating systems rely on the efficient transfer of heat. Grundfos supplies efficient, reliable pumps and systems for a broad range of cooling applications and for OEM cooling units.
  • Industrial heating — Solutions for industrial heating applications meet great demands every day from very high temperatures to delicate processes that require extreme precision. There is a high efficiency heat pump from Grundfos for any need.
  • Industrial process water treatment — Our advanced pumping solutions are more intelligent, more capable and more reliable, with autonomous, data-driven technology that connects and optimizes your entire system  ultimately saving you time, money and maintenance.
  • Industrial water supply & transfer — For industrial water supply, Grundfos supplies intelligent pumps as part of fully-integrated and optimised solutions for pressure boosting, level control, liquid transport or filtration, ensuring an optimal infrastructure on your production site.
  • Irrigation — Our high-efficiency pumping solutions work seamlessly with modern irrigation systems for agricultural and non-agricultural applications and can operate with on- and off-grid energy sources.
  • Machining — The machine tool coolant pumps and high-pressure pumps used in machining processes in industry require precise pump speed and control. With Grundfos, you benefit when your system is integrated with controls and monitoring.
  • Process liquids transfer — A wide range of pumps for the transfer of water, cooling lubricants and other liquids in industrial and process systems.
  • Surface water intake — You require a cost-effective, reliable and energy-optimised raw water pumping solution for surface raw water sources. Grundfos is a full-line supplier of pumps, monitoring and connectivity solutions for river, lake or marine extraction.
  • Wastewater treatment — Treating wastewater is about maintaining optimal and effective processes at mechanical, biological and chemical treatment stages. A full-line supplier, Grundfos ensures that hydraulic stability is maintained and capacity not exceeded for all processes.
  • Water distribution — Reduce water leakage and cut energy and maintenance costs with optimised pumping systems and smart pressure management. You get peace of mind from a water distribution system that delivers correct water pressure to the consumer.

category

  • Endsuction long coupled single stage
    End-suction long-coupled single-stage pumps are ideal for large-scale industrial applications. As with all end-suction pumps, the liquid runs directly into the impeller and the inlet and outlet form a 90 degree angle to each other. The long-coupled design makes the pumps easy to service and maintain.
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