Roll over image to zoom
SKU: 99411150
Grundfos Alpha2 25-60 Cast Iron AUTOADAPT Circulator Pump 130mm with Composite Impeller
Australia-Wide
(08) 9240 2992
Official Grundfos
Peace of Mind
Product Overview
Balancing a radiator heating system manually, adjusting a speed switch through the seasons as demand changes, is eliminated by the Grundfos Alpha2 25-60's AUTOADAPT function. Built with a cast iron housing for closed-loop domestic heating circuits, it reads system resistance continuously and adjusts output to match, rather than running at a fixed setting regardless of actual load.
Even at peak output the pump draws only 34 W, delivering approx. 56.6 L/Min with a maximum head up to 6 m of maximum head, with current consumption automatically varying between 0.04 A and 0.32 A on a 1 x 240 V supply as demand changes throughout the day. An Energy Efficiency Index of 0.17 reflects the electronically commutated motor's reduced power draw.
An automatic reduced night-time duty function lowers output further during low-demand overnight periods, detected from system flow rather than a preset timer. The cast iron housing and composite impeller are built for standard closed-loop radiator circuits, with a liquid temperature range from 2°C to 110°C.
Housed at a compact 130 mm port-to-port length, the pump suits tighter valve spacing than the 180 mm variant, and an IPX4D enclosure provides a higher level of ingress protection than the IP44 rating typical of fixed-speed heating circulators. Class F insulation completes the specification.
FEATURES
- AUTOADAPT function reads system resistance continuously and adjusts pump output automatically
- Automatic reduced night-time duty mode lowers output during low-demand overnight periods, detected from system flow
- Electronically commutated permanent magnet motor achieves an Energy Efficiency Index of 0.17
- Current consumption self-adjusts from 0.04 A to 0.32 A as the pump responds to changing system demand
- Cast iron housing specified for closed-loop radiator circuits where potable water approval is not required
- Composite impeller construction delivers consistent hydraulic performance in closed-loop heating applications
- Compact 130 mm port-to-port body dimension accommodates tighter valve spacing
- IPX4D enclosure rating provides ingress protection against splashing water and dust
SPECIFICATIONS
| Max Flow | 56.6 L/Min |
| Max Head | 6 m |
| Power | 34 W / 240v |
| Rated Current | 0.32 Amps |
| Suitable For | Radiator Heating |
| Body Material | Cast Iron |
| Liquid Temperature | 2°C to 110°C |
| Inlet Size | 40 mm |
| Outlet Size | 40 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 metallurgy is selected for the pump body to resist abrasive wear?
Manufactured with quality materials, the Grundfos Alpha2 25-60 incorporates Cast Iron for dependable longevity and resistance to fluid erosion.
What electrical connection and motor power run this pump?
Under full load conditions, the motor in the Alpha2 25-60 delivers 0.034 kW on a 240 V line drawing 0.32 Amps.
What liquid temperatures can this pump tolerate during standard operation?
Tested for thermal durability, the Alpha2-25-60 tolerates working fluid temperatures up to 2°C to 110°C.
How much vertical head pressure can this pump generate?
Fluid elevation through vertical risers reaches up to 6 m with the Alpha2 25 60 under standard duty points.
How much water flow can this pump deliver per minute?
Discharge throughput on the Alpha2/25/60 reaches a maximum flow rate of approximately 56.6 L/Min under standard operating conditions.
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