GRUNDFOS CMB 3-46 .5kw PRESSURE PUMP

Grundfos CMB 3-46 Booster Pump Set

The Grundfos CMB PM is a compact boosting solution designed for efficient water supply in domestic and light commercial applications. Paired with a Grundfos PM pressure manager, it automatically starts and stops the pump based on demand — delivering reliable, consistent water pressure without you having to think about it.

Set-and-Forget Pressure Control
The pressure manager monitors demand and controls the pump automatically, protecting it from dry running while keeping pressure steady throughout your home. Installation is straightforward — once connected to your pipework, it's simply a matter of plugging in and the system is operational.

Built to Last
Constructed with a 304 stainless steel body, impeller, and pump shaft, along with a technopolymer diffuser and carbon mechanical seal, the CMB 3-46 is built for durability in both mains and rainwater applications.

Compact and Reliable
A multi-stage centrifugal pump design makes the CMB Booster compact and versatile — with a higher head than the CMB 3-37, it's suited to homes and light commercial sites needing extra pressure across longer runs or multiple outlets.

Specifications

• Motor / power: 500W (0.7HP)
• Max flow: 70 L/min (3 m³/h rated flow)
• Head: 46 m
• Supply voltage: 1 x 240V, 50Hz
• System pressure: Max 10 bar
• Inlet: 1" F / 25mm
• Outlet: 1" M / 25mm
• Body: 304 stainless steel
• Impeller & shaft: 304 stainless steel
• Diffuser: Technopolymer
• Mechanical seal: Carbon with resin/ceramic
• Enclosure class: IP55 (suitable for covered installation)
• Suitable for: Domestic and light commercial water supply