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Our Vendors

 Resol LogoRESOL Controllers
Intelligent Solar Thermal Controllers


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High-Quality Solar Thermal Engineering


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Applied Advanced Technology.

Solarnetix offers specialty tools and products for Solar Hot Water and Hydronic Heating installations.
Among our specialties are Solar Hot Water Storage and Advanced Tube Systems.

Contact us if you a project demanding a special application.


3-Way Diverting Zone Valves from Belimo
Belimo Zone Valves

The 3-way motorized valve ZONE-3 is used in solar and hydronic heating systems, in which different loads/zones of systems can be separately controlled or additional equipment can be switched on or off.

This high-quality valve is used where fail safe operation or 2-wire control is required.

icon Belimo Zone Valve Series - Technical Product Brief

icon Belimo Zone Valve Series - User Manual

Compact size, modern design, insulated actuator housing. Simple manual override for commissioning or emergency operation. Simple 120 VAC.electrical wiring.

The built-in end switch (dry contact) can be used for additional control purposes (max. 5A). The actuator can be quickly replaced without disassembly of the valve using Push button for quick removal.


Zilmet Expansion Tanks
Solar Expansion Tank


Solar expansion tanks control thermal expansion of the heat transfer fluid in closed loop solar systems. Differenct sizes of expansion tanks are offerred and we will help you to choose right size.

icon Zilmet Expansion Tank Literature

Expansion tank size calculator:

icon Sizing Solar Expansion Tanks