Grundfos NKG Horizontal Single-Stage End-Suction Pump (Back-Pull-Out Design)
The NKG series comprises non-self-priming, single-stage centrifugal volute pumps compliant with ISO 2858 standards, designed specifically for industrial and building systems. Key features include:
Structural Design
Axial inlet and radial outlet: Optimizes fluid paths, reduces turbulence, and enhances efficiency.
Back-pull-out design: Facilitates maintenance and servicing, minimizing downtime.
Horizontal installation: Suitable for integration into piping systems; space-saving.
Materials and Durability
Pump casing and impeller: Standard cast iron (EN-GJL-250/EN-GJL-200); optional special materials like stainless steel (1.4408) available to suit various media.
Wear rings: Bronze/brass or carbon-graphite filled PTFE (Graflon®) for extended service life.
Shaft seal configuration: Supports single mechanical seals (e.g., BAQE, BQQE), double seals, or gland packing to meet leak-prevention requirements.
High Efficiency and Energy Saving
Centrifugal pump technology: Best Efficiency Point (BEP) clearly defined; compliant with energy-saving standards.
VFD compatibility: Supports variable frequency operation (requires CUE frequency converter) to meet flow regulation needs.
Application Scenarios
Liquid compatibility: Suitable for clean, thin, non-explosive liquids such as cold water, hot water, and industrial circulating water.
System integration: HVAC, water supply systems, cooling circuits, etc.
Ease of Maintenance
Bearing lubrication: Optional automatic grease lubricators or constant-level oilers; supports long maintenance intervals.
Monitoring functions: Supports vibration monitoring (SPM measurement points) and temperature sensor (Pt100) installation for real-time operational monitoring.
Safety and Certification
Nameplate specifications: Includes key parameters such as flow rate, head, pressure, and temperature; compliant with international certifications like WRAS.
Explosion-proof options: Select models are ATEX certified, suitable for hazardous environments.








