Roll over image to zoom
SKU: 98507627
Grundfos CMB-SP 3-28 Stainless Steel Self-Priming Pressure Boosting Domestic Pump Multistage Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
The Grundfos CMB-SP 3-28 is a self-priming pressure boosting pump designed for domestic water supply, garden irrigation, and light commercial applications. It is supplied as a complete booster unit with an integrated PM2 pressure manager, enabling automatic start and stop operation based on demand while protecting the pump against dry running.
Constructed with a stainless steel pump housing and multistage stainless steel impellers (AISI 304), the pump ensures reliable performance, corrosion resistance, and long service life. The compact booster design allows easy installation and operation with minimal setup.
The pump operates at a rated flow of 3 m³/h with a corresponding head of 20.5 metres. Based on the performance curve, the unit delivers a maximum flow of approximately 65 L/min at low head conditions and achieves a maximum head of approximately 28 metres at shut-off. It supports a self-priming suction lift of up to 4 metres.
The unit is powered by a 0.5 kW electric motor operating on a 1 x 240 V, 50 Hz supply. The integrated PM2 controller provides automatic pressure control, adjustable start pressure, and restart functionality for efficient and safe operation.
FEATURES- Motor: 0.5 kW Electric Motor, 1 x 240 V, 50 Hz
- Maximum Flow: approx. 65 L/min
- Maximum Head: approx. 28 m
- Rated Flow: 3 m³/h
- Rated Head: 20.5 m
- Pump Type: Self-priming pressure boosting pump
- Controller: Integrated PM2 pressure manager with dry-run protection
- Construction: Stainless steel pump housing with multistage stainless steel impellers (AISI 304)
- Impellers: Multistage design (3-stage)
- Mechanical Seal: AVBE shaft seal
- Self-Priming Capability: Up to 4 m suction lift
- Return Valve: Integrated
- Maximum Operating Pressure: 10 bar
- Maximum Ambient Temperature: Maximum 50°C
- Pump Liquid Temperature: Maximum 40°C
- Inlet Size: 25 mm
- Outlet Size: 25 mm
- Enclosure Class: IP55
SPECIFICATIONS
| Max Flow | 65 L/Min |
| Max Head | 28 m |
| Power | 0.5 kW / 240v |
| Rated Current | 3.3 Amps |
| Suitable For | Domestic Supply |
| Body Material | Stainless Steel |
| Liquid Temperature | Maximum 40°C |
| Inlet Size | 25 mm |
| Outlet Size | 25 mm |
| Warranty | 24 Months |
Warranty & Returns
All products supplied by Foundation Pumps are covered by a minimum 12-month warranty unless otherwise stated. Some brands may offer longer manufacturer warranties. Warranty covers manufacturing defects, faulty materials and workmanship under normal use.
- Products must be installed correctly and in accordance with the manufacturer’s instructions.
- Warranty does not cover incorrect installation, misuse, dry running, normal wear and tear, unauthorised repairs or damage caused by external factors.
- Proof of purchase, photos, videos and installation details may be requested when assessing a warranty claim.
- The customer is responsible for returning the product to Foundation Pumps or the nominated service centre unless otherwise agreed.
- Removal, reinstallation, labour and associated site costs are generally the customer’s responsibility unless required under Australian Consumer Law.
- Change-of-mind returns may be accepted within 30 days provided the product is unused, uninstalled and returned in its original packaging.
- Customers are responsible for return freight costs for change-of-mind returns.
- Restocking fees may apply to special-order, bulky or non-stocked products.
- Used, installed or specially ordered products may not be eligible for change-of-mind returns.
- If a product arrives damaged or faulty, please contact Foundation Pumps as soon as possible so we can assist with the appropriate repair, replacement or refund.
Your rights under Australian Consumer Law are not affected.
How much water flow and vertical lift can I get from this pump?
You get up to 65 L/Min in flow and a maximum head of 28 m from the Grundfos CMB-SP 3-28, depending on operating conditions.
How much power does the motor consume during standard operation?
Powered by a dedicated 0.5 kW motor, the CMB-SP 3-28 connects to 240v mains power with a rated current draw of 3.3 Amps.
What materials are used to construct the pump casing and impeller?
Manufactured with quality materials, the CMB-SP-3-28 incorporates Stainless Steel for dependable longevity and resistance to fluid erosion.
What property water management tasks match this pump?
Suited for diverse installations, the CMB SP 3 28 performs self-priming suction lift from subterranean rainwater cisterns and underground holding pits with dependable fluid propulsion.
How many years of warranty coverage come with this Grundfos pump?
Factory coverage on the CMB/SP/3/28 provides an authentic 2 Years warranty for dependable long-term reliability.
Need help choosing the right pump?
Our team of pump experts are here to help you find the perfect solution for your application.
- Free expert advice
- Pump sizing & system recommendations
- Fast response — call or email us