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GR-99371966
Grundfos - ALPHA3 15-50/60 Domestic Circulator - 130mm - 240V - Cast IronALPHA3 15-50/60 130
Grundfos ALPHA3 high-efficiency circulator pumps are designed for circulating liquids in heating systems. With an energy efficiency index (EEI) well below the ErP benchmark, they ensure substantial energy savings.
ALPHA3 is completely controlled with Grundfos GO Remote via Bluetooth, which gives you step-by-step assistance to pump configuration, maintenance and commissioning, including:
- Warning and alarm status
- Pump venting process
- Scheduling for when the pump should operate incl. summer mode
- Operating and control modes
The pump features radiator and underfloor-heating control modes with AUTOADAPT, which continuously adjusts the pump performance to the actual heat demand, i.e. the size of the system and changing heat demand during the year. The AUTOADAPT feature finds the setting that provides optimal comfort with minimal energy consumption and makes the commissioning fast, safe, and straightforward. ALPHA3 also offers proportional-pressure, constant-pressure and constant-curve control modes with setpoint adjustment anywhere between the maximum and minimum curve of the chosen setting.
Furthermore, ALPHA3 can communicate directly with the Grundfos GO Balance app, enabling installers to easily perform hydronic balancing of radiator and underfloor-heating systems. ALPHA3 is furthermore compatible with ALPHA Reader and the Grundfos GO Balance app, enabling the installers to easily perform hydronic balancing of radiator and underfloor-heating systems.
With the self-operating night setback function, the pump automatically changes between normal duty and night setback. The changeover depends on the flow-pipe temperature controlled by the heating appliance.
The design and the chosen materials of the pump contribute to long life. The pump is self-venting through the system, which contributes to straightforward commissioning. The space-efficient design, featuring a pump head with an integrated control box, fits into most common installations. Pump and motor form an integral unit without a shaft seal. The bearings are lubricated by the pumped liquid. These constructional features ensure maintenance-free operation.
The active dry-running protection feature protects the pump against dry running during startup and normal operation. In case of a blocked rotor, the pump will continuously attempt to restart with highest possible torque.
Pump housings made of Cast Iron are electrocoated to improve corrosion resistance. The motor is a synchronous permanent-magnet/space-efficient-stator motor characterised by high efficiency. The pump speed is controlled by an integrated frequency converter incorporated in the control box.
Insulating shells are supplied with pumps to minimise heat loss in heating systems.
Suitable for: Commercial air conditioning, District heating
In stock
Free Standard Delivery
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96498835
Grundfos - 2 Inch Oval Flange - To Suit CRI 10Grundfos - 2 inch Oval Flange - To Suit CRI 10
This is a Spares/Kit item, please get in touch for product compatibility.
Grundfos (est. 1945) is a Danish pump manufacturer known for high-efficiency circulators, multistage boosters, borehole and wastewater pumps, plus packaged pressure systems. The range covers HVAC circulation, domestic hot water recirculation, pressure boosting, industrial water transfer and public water management, with strong focus on energy efficiency and intelligent controls.
In stock
Free Standard Delivery
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96575698
Grundfos - Sololift Kit - Including MicroswitchGrundfos - Sololift Kit - Including Microswitch
This is a Spares/Kit item, please get in touch for product compatibility.
Grundfos (est. 1945) is a Danish pump manufacturer known for high-efficiency circulators, multistage boosters, borehole and wastewater pumps, plus packaged pressure systems. The range covers HVAC circulation, domestic hot water recirculation, pressure boosting, industrial water transfer and public water management, with strong focus on energy efficiency and intelligent controls.
In stock
Free Standard Delivery
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339119
Grundfos - Coupling Kit - 339119Grundfos - Coupling Kit - 339119
This is a Spares/Kit item, please get in touch for product compatibility.
Grundfos (est. 1945) is a Danish pump manufacturer known for high-efficiency circulators, multistage boosters, borehole and wastewater pumps, plus packaged pressure systems. The range covers HVAC circulation, domestic hot water recirculation, pressure boosting, industrial water transfer and public water management, with strong focus on energy efficiency and intelligent controls.
In stock
Free Standard Delivery
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10001K12
Grundfos - SP3A-12 4" Submersible Borehole Pump - 415VGrundfos's range of SP Multi-stage submersible pumps for raw water supply, groundwater lowering and pressure boosting. These pumps are suitable for pumping clean, thin, non-agressive liquids without solid particles or fibres.
In stock
Free Standard Delivery
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505821
Insulation jacket - Suiting 25-80 & Alpha 2 PumpsInsulating shells are engineered for individual pump type. This product is manufactured by Grundfos. Insulating shells enclose the entire pump housing and are easy to fit around the pump. They can be utilised for both stainless-steel and cast-iron pumps.
For Grundfos UPS Pumps
The Insulation jacket to suit 25-80 and alpha 2 range of pumps.
In stock
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97775344
Grundfos - Sololift Pressure SwitchGrundfos - Sololift Pressure Switch
This is a Spares/Kit item, please get in touch for product compatibility.
Grundfos (est. 1945) is a Danish pump manufacturer known for high-efficiency circulators, multistage boosters, borehole and wastewater pumps, plus packaged pressure systems. The range covers HVAC circulation, domestic hot water recirculation, pressure boosting, industrial water transfer and public water management, with strong focus on energy efficiency and intelligent controls.
In stock
Free Standard Delivery
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96401928/98122409
Grundfos - TP 40-60/2 Commercial Circulator Pump - 415VFixed speed, DN40 flanged, single head, cast iron commercial circulator pump
In stock
Free Standard Delivery
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GRU-99164487
Grundfos - Comfort 15-14 BAPM GB Hot Water Re-Circulation Brass Pump - With AutoAdaptA direct replacement for 97916757 (Grundfos UP 15-14 BA PM)
In stock
Free Standard Delivery
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GRU-98992605
Grundfos - MTH 2-5/5 Multi-Stage Immersible Centrifugal PumpMultistage, immersible, self-priming, centrifugal pump for vertical installation in tanks etc.
In stock
Free Standard Delivery
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96495694
Grundfos - Blanking Plate - For TPD 100-90/4Product name: Blanking flange
This is a Grundfos Spares/Replacement item used for servicing and replacing compatible pump equipment.
Grundfos (est. 1945) is a Danish pump manufacturer known for high-efficiency circulators, multistage boosters, borehole and wastewater pumps, plus packaged pressure systems. The range covers HVAC circulation, domestic hot water recirculation, pressure boosting, industrial water transfer and public water management, with strong focus on energy efficiency and intelligent controls.
In stock
Free Standard Delivery
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97757671
Grundfos - Spare O-Ring 221.84X3,53Grundfos - Spare O-Ring 221.84X3,53
This is a Spares/Kit item, please get in touch for product compatibility.
Grundfos (est. 1945) is a Danish pump manufacturer known for high-efficiency circulators, multistage boosters, borehole and wastewater pumps, plus packaged pressure systems. The range covers HVAC circulation, domestic hot water recirculation, pressure boosting, industrial water transfer and public water management, with strong focus on energy efficiency and intelligent controls.
In stock
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96537605
Grundfos - TP/ NB/ NK BAQE Seal Kit - 96537605Grundfos - TP/ NB/ NK BAQE Seal Kit - 96537605
This is a Spares/Kit item, please get in touch for product compatibility.
Grundfos (est. 1945) is a Danish pump manufacturer known for high-efficiency circulators, multistage boosters, borehole and wastewater pumps, plus packaged pressure systems. The range covers HVAC circulation, domestic hot water recirculation, pressure boosting, industrial water transfer and public water management, with strong focus on energy efficiency and intelligent controls.
In stock
Free Standard Delivery
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97757672
Grundfos - 97757672 Spare O-RingGrundfos - 97757672 Spare O-Ring
This is a Spares/Kit item, please get in touch for product compatibility.
Grundfos (est. 1945) is a Danish pump manufacturer known for high-efficiency circulators, multistage boosters, borehole and wastewater pumps, plus packaged pressure systems. The range covers HVAC circulation, domestic hot water recirculation, pressure boosting, industrial water transfer and public water management, with strong focus on energy efficiency and intelligent controls.
In stock

















