Grundfos 1/2HP 3/4HP Centrifugal Water Pump For Commercial Heating

Price Negotiable

Price: Negotiable

MOQ: 1

Delivery Time: 15~30 workdays

Brand: Grundfos

Product Description

End-suction long-coupled single-stage pump
NK 40-225/250 AA1F1S3ESBQQEJW3
Number: 93330814

Applications:

Commercial heating

Compliance: Standard pump in accordance with EN 73

NK 40-225/250 AA1F1S3ESBQQEJW3
The non-self-priming single-stage volute centrifugal pump is designed in accordance with ISO 5199, and its dimensions and rated performance comply with EN 733. The flanges are of PN 10 type, with dimensions conforming to EN 1092-2. The pump is equipped with an axial suction port, a radial discharge port, and a horizontal shaft. It adopts a back-pull-out design, allowing maintenance personnel to disassemble the coupling, bearing bracket, and impeller without loosening the motor, pump casing, and pipelines. The unbalanced O-type shaft seal meets the requirements of DIN EN 12756. An air-cooled base-mounted asynchronous motor is installed on the pump, with both the pump body and the motor mounted on the same base frame.

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: 1,440 rpm
Rated flow rate: 31.78 m³/h
Pump with motor: Y
Rated head: 18.25 m
Impeller actual diameter: 250 mm
Impeller nominal speed: 225
Main shaft seal: BQQE
Shaft seal code: BQQE
Mechanical seal type: Single
Curve tolerance: ISO9906:2012 2B
Bearing design: Standard

Materials:

Pump housing: Cast iron
- Pump housing: EN 1561 EN-GJL-250
- Pump housing: ASTM A48-35
Impeller: Stainless steel
- Impeller material: EN 1.4308
- Impeller material: ASTM A351 CF8
Internal pump housing coating: Painting
Shaft: Steel
- Shaft material: EN 1.0503/1.4301
- Shaft material: AISI 1045/304

Installation:

Maximum ambient temperature: 40 °C
Maximum operating pressure: 10 bar
Pipeline connection standard: EN 1092-2
Inlet connection type: DIN
Outlet connection type: DIN
Inlet size: DN 65
Outlet size: DN 40
Pressure rating for pipe connection: PN 10
Coupling type: Flexible w/o spacer
Base frame design: C-channel
Base frame code: 240
Grouting (Yes/No): N

Electrical Data:

Motor model: 100L
Rated power - P2: 3 kW
Power supply frequency: 50 Hz
Rated voltage: 3 x 220-230/380-400 V
Rated current: 10.9-10.4/6.3-5.99 A
Starting current: 950 %
Cos phi - Power factor: 0.8
Rated speed: 1,440 rpm
Efficiency: IE4 90.4%
IE efficiency class: IE4
Motor full-load efficiency: 90.4 %
Motor efficiency at 3/4 load: 90.7 %
Motor efficiency at 1/2 load: 90.1 %
Motor pole count: 4
Enclosure rating (IEC 34-5): 55 (Protect. water jets/dust)
Insulation class (IEC 85): F
Motor number: 92816757
Bearing insulation type N end: N

Other:

Minimum Efficiency Index, MEI ≥: 0.70
Net weight: 130 kg
Gross weight: 153 kg
Transport volume: 0.428 m³
Place of origin: CN

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Company Tianjin Shiny-Metals Technology Co., Ltd.

Location Room 405A-8, Building 1, Collaborative Development Center, No. 1 Xihuan North Road, Zhongguancun Science and Technology City, Jingjin, Baodi District, Tianjin

Contact Person Wang

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