S2 solar groupS2 solar 3 pumping unit

S2 Solar 3 is the 2-way solar pumping unit suitable to be integrated in forced circulation solar thermal systems. It is used to transport the fluid from the solar panels to the user's exchanger.

• Flow regulator with system loading and unloading valves
• High efficiency synchronous solar circulator 
• 3 flanged ball valve with non-return valve
• 6 bar safety group with ø50 mm pressure gauge 

• Flanged ball valve with 10 non-return valve mbar
• Brass deaerator with manual vent valve
• Connecting pipe and connection 

Members of the group of solar pumping


non-return valve

Non-return valve

This special non-return valve inserted inside both the delivery branch and the return branch. seals and ensures low pressure drop to the advantage of system efficiency. 

Turning the handle 45 ° is possible to exclude in case of maintenance.
(Eg. system emptying) 


valves solar groups 1via

Flow regulator

The groups of pumping solar present CHARACTER important that enhance the stability of the system, such as the presence of a practical flow regulator that allows a smooth operation of the plant.

This fact shows the taps of loading / unloading in a close position, thus minimizing the residual air in circulation after the loading operation.


Grundfos upm3High efficiency circulator

In the group of solar pumping is integrated pump for recirculation
Grundfos UPM3 Solar 7,5

Long term stability-resistant materials and advanced electronics,
It is a highly efficient circulator that offers flexible solutions for solar thermal systems. 

 Features and Models
Features models
S2 solar 3 - 2 vie
Pump Grundfos UPM3 Solar 7,5
Flowmeter 2-12 l / m
Connections 3 / 4 "M
Wheelbase pump 180 mm
Isolation EPP

 S2 Solar 3 dimensions

It can be installed in less than half an hour thanks to the included accessories that make it easy to fix both on the wall and on the kettle.
Its innovative and compact design makes it modern, elegant and not bulky.

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