Product Overview
The Grundfos CR3-7 A-FGJ-A-E-HQQE is a vertical multistage centrifugal pump engineered for high-pressure, low-flow industrial fluid handling. As part of the Grundfos CR series, this model utilizes a stack of hydraulically optimized impellers and diffusers arranged vertically on a common shaft, allowing it to generate significant head from a compact footprint. The “3” designates the nominal flow rate (approximately 3 m³/h), while the “7” indicates the number of stages, directly determining the pump’s pressure-generating capability. Constructed with a cast iron base and pump head, the CR3-7 is driven by a standard electric motor and is designed for inline mounting with standard pipe connections. It serves as a reliable pressure-boosting and transfer solution across water treatment, process cooling, and industrial circulation systems.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Vertical Multistage Centrifugal Pump |
| Model Designation | CR3-7 A-FGJ-A-E-HQQE |
| Nominal Flow Rate | Approx. 3 m³/h (CR3 range) |
| Number of Stages | 7 |
| Operating Pressure | Standard Industrial Grade (Up to rated bar per stage configuration) |
| Mounting & Connection | Standard ISO / Manufacturer Interface (Inline Flanged) |
| Pump Head & Base Material | Cast Iron (EN-GJL-250 / ASTM A48 Class 35) |
| Shaft Seal | HQQE Cartridge Mechanical Shaft Seal (Carbon/SiC/EPDM) |
| Motor Type | Standard IE3 Efficiency Induction Motor |
Engineering Features & Advantages
- Precision Performance: The multistage impeller and diffuser stack delivers stable, high-pressure output with minimal pulsation, ensuring consistent flow across varying system demands.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with a robust cast iron casing and a durable HQQE cartridge seal designed for extended maintenance intervals.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, allowing drop-in replacement without pipework modification.
- Compact Vertical Design: Inline suction and discharge ports minimize installation footprint, making it ideal for space-constrained plant rooms and skid-mounted systems.
- Service-Friendly Construction: The cartridge seal and modular stage design simplify inspection and repair, reducing downtime and total cost of ownership.
Typical Industrial Applications
This vertical multistage centrifugal pump
PRODUCT IMAGES
GRUNDFOS CR3-7 A-FGJ-A-E-HQQE Vertical Multistage Centrifugal Pump
âš¡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine GRUNDFOS CR3-7 A-FGJ-A-E-HQQE Vertical Multistage Centrifugal Pump. This Denmark-made high-pressure pump features a robust multistage design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.