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SKU: 98244556
Grundfos CMB 3-37 Stainless Steel Automatic Pressure Boosting Pump for Agricultural Use with Pressure Switch
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
The Grundfos CMB 3-37 (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 includes a Grundfos CM pump, five-way valve, and 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), ensuring corrosion resistance and long service life. The integrated return valve supports system stability, while the modular booster design allows easy installation when paired with a suitable pressure tank.
The pump operates at a rated flow of 3.1 m³/h with a corresponding head of 27.4 metres. From the performance curve, the unit achieves a maximum head of approximately 36.6 metres at shut-off and delivers a maximum flow of approximately 70 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 0.5 kW electric motor operating on a 1 x 240 V, 50 Hz supply. The pressure switch operates within an adjustable pressure range of 1 to 5 bar, allowing flexible control based on system requirements. A pressure tank is required for complete system operation.
FEATURES- Automatic Booster System: Operates via pressure switch for demand-based water supply
- Adjustable Pressure Control: Operating range of 1–5 bar for flexible system setup
- System Configuration: Includes CM pump, five-way valve, and pressure switch assembly
- Tank-Compatible Design: Designed to operate with external pressure tanks for stable performance
- Leakage Handling Capability: Suitable for installations with minor continuous leakage conditions
- Multistage Hydraulic Design: Ensures smooth and stable pressure delivery
- Corrosion-Resistant Construction: Stainless steel wet-end components enhance durability
- Integrated Return Valve: Prevents backflow and maintains system pressure
- Compact Booster Layout: Simplifies installation and system integration
- Low Maintenance Operation: Simple mechanical control system reduces complexity
SPECIFICATIONS
| Max Flow | 70 L/Min |
| Max Head | 37 m |
| Power | 0.5 kW / 240v |
| Rated Current | 3.1 Amps |
| Suitable For | Agricultural Supply |
| Body Material | Stainless Steel |
| Liquid Temperature | Maximum 60°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.
What kind of water volume and pressure head does this pump provide?
Achieving strong system delivery, the Grundfos CMB 3-37 develops a maximum flow rate of 70 L/Min and a maximum dynamic head of 37 m across its operating curve.
How much electricity and current does this pump draw under load?
Running on 240v power supplies, the CMB 3-37 is driven by a 0.5 kW motor rated at 3.1 Amps.
How is the pump casing constructed to resist mechanical and fluid wear?
High-grade Stainless Steel components in the CMB-3-37 protect internal passages against corrosive fluid contact.
Where is this pump commonly installed and utilized?
Primary tasks for the CMB 3 37 include domestic water boosting from rainwater storage tanks and municipal mains supply lines, delivering efficient water management across residential and rural systems.
Does this pump include an official manufacturer warranty?
You receive a certified 2 Years manufacturer warranty with the CMB/3/37, giving you long-term protection and support.
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