Grundfos NBG 50-32-250/262 Vertical or Horizontal Mounting Horizontal Centrifugal Pump End Suction Single Stage Close Coupled Space Saving

• 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
  Short-coupled pump in accordance with ISO 2858

NBG 50-32-250/262 AAF2AESBQQEOW1 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 features 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.

• Frequency converter: None
• Pressure sensor: N

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

• Pump speed basis: 2945 rpm
• Rated flow rate: 27.01 m³/h
• Rated head: 79.51 m
• Impeller actual diameter: 262 mm
• Impeller nominal speed: 250
• Impeller type: Standard
• Shaft seal configuration: Single
• Main shaft seal: BQQE
• Shaft seal code: BQQE
• Curve tolerance: ISO9906:2012 3B
• Bearing design: Standard

• 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: EN-GJL-200
  • Impeller: ASTM class 30
• Internal pump housing coating: CED
• Shaft: Stainless steel
  • Shaft material: EN 1.4301
  • Shaft material: AISI 304

• Maximum ambient temperature: 40 °C
• Maximum operating pressure: 16 bar
• Pipeline connection standard: EN 1092-2
• Inlet size: DN 50
• Outlet size: DN 32
• Pressure rating for pipe connection: PN 16
• Bearing lubrication: Grease
• Pump casing with support block: Yes
• Yes = With support block, No = Without support block: N

• Motor model: 160MB
• Rated power - P2: 15 kW
• Power supply frequency: 50 Hz
• Rated voltage: 3 x 380-400/660-690 V
• Rated current: 27.8-26.4/16.0-15.3 A
• Starting current: 820 %
• Cos phi - Power factor: 0.88
• Rated speed: 2945 rpm
• Efficiency: IE4 93.3%
• IE efficiency class: IE4
• Motor full-load efficiency: 93.3 %
• Motor efficiency at 3/4 load: 93.1 %
• Motor efficiency at 1/2 load: 92.0 %
• Motor pole count: 2
• Enclosure rating (IEC 34-5): 55 (Protect. water jets/dust)
• Insulation class (IEC 85): F
• Motor number: 92555097
• Bearing insulation type N end: N

• Minimum Efficiency Index, MEI ≥: 0.70
• Net weight: 173 kg
• Gross weight: 198 kg
• Transport volume: 0.707 m³

. Located in Tianjin, China, Tianjin Shiny-Metals Technologyco., Ltd. is a professional company that specializes in the research and development, design, production, sales, trade, and service of pumps. Our products are exported to more than 40 countries and regions, continuously building our global brand reputation. We offer a wide range of pumps, including centrifugal pumps, axial flow pumps, jet pumps, submersible pumps, deep-well submersible pumps, and swimming pool pumps, with over 500 specifications available. Our company has obtained the ISO 9001 certification from the International Organization for Standardization (CQC). In addition, our civilian motors have undergone product evaluation for CCC China mandatory certification. We have also received certifications such as CE, EMC, GS, RoHS, EAC, SASO, and ST. Our company is dedicated to meeting customer needs with high-quality products, reasonable prices, and exceptional pre-sales, in-sales, and after-sales services. We adhere to the management principles of "quality first, customer first, and reputation-based" and are committed to providing global customers with the best solutions for water pumps and water treatment systems, improving their quality of life. Our goal is to make the world a better place through water, and we strive to make water even better.