Grundfos 99047933, CM3-G Series, Model CM 3-6

Product Overview

System downtime during the height of the growing season is more than an inconvenience; it is a threat to your reputation and your client's bottom line. When a primary booster pump fails during peak summer heat, the resulting turf stress or crop loss can lead to costly warranty claims and strained professional relationships. With global supply chains remaining unpredictable, waiting for a failure to occur before ordering a replacement is a high risk strategy that often results in long backorders and missed project deadlines. By securing this Grundfos CM series pump now, you ensure your crews can respond immediately to mechanical failures, keeping systems operational and inspections on schedule.

The Grundfos CM3-6 offers a significant technical advantage over standard light-duty centrifugal pumps through its compact, modular design and superior hydraulic efficiency. The stainless steel construction of the wetted parts provides exceptional corrosion resistance compared to cast iron alternatives, which translates to fewer service calls and a lower total cost of ownership for your clients. This model is engineered for quiet operation and a small footprint, allowing your team to install it in tight mechanical rooms where larger units would require expensive piping reconfigurations. Stocking this high performance pump gives your firm a competitive edge by offering a premium, long lasting solution that minimizes labor hours on the initial install and over the life of the system.

Product Specifications

Available Models & Sizes

The Grundfos CM series is available in several flow ranges, including CM1, CM3, and CM5 configurations, with varying stage counts to meet specific head pressure requirements. This CM 3-6 model sits in the mid-range of the series, but please contact our technical sales team for full configuration options, specific motor voltages, or bulk pricing for large scale projects.

Key Features

• AISI 304 stainless steel construction ensures long term durability and resistance to aggressive water conditions.
• Multistage centrifugal design provides high pressure performance with a significantly smaller physical footprint than single stage units.
• Low noise emission levels allow for installations near residential living areas or professional office spaces without sound dampening.
• The modular pump design simplifies maintenance and part replacement, reducing the time your crews spend on site.
• High efficiency hydraulics lower energy consumption for your clients, providing a strong selling point for green building projects.
• Robust mechanical shaft seals prevent leakage and protect the motor from moisture damage during high demand cycles.

Common Applications

• Commercial landscape irrigation
• Residential lawn and garden systems
• Agricultural and crop irrigation
• Sports turf and golf course maintenance
• Municipal parks and public spaces
• Greenhouse and nursery operations

Installation Notes

Installation should be performed on a level, solid foundation using appropriate vibration dampening pads to ensure quiet operation and prevent stress on piping connections. Ensure that all suction lines are airtight and that a check valve is installed if the pump is operating in a suction lift application. Verify that the electrical supply matches the motor plate specifications and use a dedicated circuit breaker to protect the internal components. Always prime the pump housing before initial startup to prevent dry running and potential damage to the mechanical seals.