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SKU: 98117630
Grundfos CMB 5-47 Stainless Steel Automatic Pressure Boosting Pump for Farm Use with Pressure Switch
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
The Grundfos CMB 5-47 (PS) is an automatic pressure boosting pump system designed for agricultural water supply, domestic use, and light commercial installations where minor leakages may occur. The system consists of a Grundfos CM pump, a five-way valve, and a pressure switch, enabling automatic operation based on pressure demand.
The pump is constructed with a stainless steel pump housing and multistage stainless steel impellers (AISI 304), providing corrosion resistance and long service life. The integrated non-return valve ensures system stability, while the modular booster configuration allows easy installation when paired with a pressure tank.
The pump operates at a rated flow of 4.7 m³/h with a corresponding head of 38.6 metres. As shown in the performance curve on page 3, the unit achieves a maximum head of approximately 46.6 metres at shut-off and delivers a maximum flow of approximately 100 L/min under low head conditions. The system is not self-priming and supports a maximum suction lift of 1 metre.
The unit is powered by a 0.9 kW electric motor operating on a 1 x 240 V, 50 Hz supply. The pressure switch operates within an adjustable range of 1 to 5 bar, allowing flexible pressure control based on system requirements. A pressure tank is required for complete system operation.
FEATURES- Automatic Booster Operation: Pressure switch enables demand-based start and stop
- Adjustable Pressure Range: Configurable between 1–5 bar for system flexibility
- Complete Booster Assembly: Includes pump, five-way valve, and pressure switch
- Tank-Ready Configuration: Designed to operate with external pressure tanks
- Leakage Handling Capability: Suitable for systems with minor continuous leakage
- Multistage Pump Design: Provides stable and consistent pressure delivery
- Corrosion-Resistant Build: Stainless steel construction enhances durability
- Integrated Non-Return Valve: Prevents backflow and maintains line pressure
- Compact Installation Layout: Simplifies installation in tight spaces
- Low Maintenance System: Mechanical control reduces system complexity
SPECIFICATIONS
| Max Flow | 100 L/Min |
| Max Head | 47 m |
| Power | 0.9 kW / 240v |
| Rated Current | 5.4 Amps |
| Suitable For | Agricultural Supply |
| Body Material | Stainless Steel |
| Liquid Temperature | Maximum 60°C |
| Inlet Size | 32 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 pressure can this pump deliver?
Depending on operating conditions, the Grundfos CMB 5-47 delivers a maximum flow rate of 100 L/Min and a maximum head of 47 m.
How much power does the motor consume during standard operation?
Connecting across 240v lines, the CMB 5-47 draws approximately 5.4 Amps with an efficient 0.9 kW motor.
What corrosion-resistant materials are used in the wetted components?
Durable Stainless Steel construction gives the CMB-5-47 exceptional structural strength and long-term protection against corrosive fluids.
What domestic plumbing and water boosting roles does this pump perform?
System installations deploy the CMB 5 47 for domestic water boosting from rainwater storage tanks and municipal mains supply lines, maintaining steady circulation and reliable line pressure.
What factory warranty backing is provided with this pumping equipment?
Purchase of the CMB/5/47 includes an official 2 Years warranty from Grundfos, covering parts and manufacturing quality.
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