Product Overview

The Grundfos NBG125-80-160/168 A-F2-B-BAQE is a single-stage, end-suction centrifugal pump engineered for high-capacity fluid transfer in industrial and building services applications. Part of the renowned Grundfos NB/NBG series, this pump features a close-coupled design where the pump is directly mounted to a standard electric motor, ensuring compact installation and precise shaft alignment. The “NBG” designation indicates a pump with a standardized back pull-out design, allowing for easy maintenance and service without disturbing the pipework. The model code 125-80-160 specifies a 125 mm suction port, an 80 mm discharge port, and a 160 mm nominal impeller diameter. The “A-F2-B-BAQE” suffix defines specific mechanical and material configurations, including a BAQE shaft seal (a balanced, cartridge-type mechanical seal with EPDM elastomers) and a cast iron pump housing with a bronze impeller. This pump operates on the principle of converting rotational kinetic energy into hydrodynamic energy, providing reliable, continuous flow for water supply, cooling, and industrial process systems.

Technical Specifications

Engineering Features & Advantages

• Precision Performance: The optimized hydraulic design of the bronze impeller and volute casing delivers high efficiency and stable flow rates across a wide performance curve, minimizing energy consumption.
• Industrial Reliability: Built for continuous operation under severe industrial conditions, featuring a robust cast iron housing and a durable BAQE cartridge seal that ensures long service life and reduced downtime.
• Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, including standard flanged connections and a back pull-out design for easy maintenance without pipe disassembly.
• Advanced Seal Technology: The BAQE balanced cartridge seal provides superior sealing performance, handles higher pressures, and is easy to replace, reducing maintenance costs.

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