Expansion vessel for Solar Energy model SMF from Ibaiondo
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He SMF Ibaiondo Solar Expansion Vessel 130ºC It is the essential professional solution for closed solar thermal energy systemsDesigned specifically for high thermal stress environments, this cup incorporates a special membrane capable of withstanding critical peaks of up 130ºC for one hour.
Solar thermal energy is prone to overheating (stagnation), which degrades standard expansion vessels. Ibaiondo's SMF model, with its advanced temperature resistance, ensures system integrity, extends the life of the heat transfer fluid, and minimizes costly maintenance.
Investing in the SMF expansion vessel guarantees the durability and safety of your solar installation, even under the most demanding conditions.
Temperature Peak Tolerance: Its high-performance membrane withstands up to 130ºC, a vital characteristic in situations of solar stagnation.
Glycol Compatibility: Suitable for use by antifreeze (glycol) to a concentration of 50%essential for frost protection.
Connections Optimization: The material of the connection varies according to the capacity (zinc-plated or brass), guaranteeing the appropriate mechanical and chemical resistance to the size of the cup.
Maximum Operational Safety: It prevents overpressure and expansion damage, maintaining the integrity of the panels, pipes and boiler.
Essential data for the design and installation of solar thermal systems.
Use: Closed solar thermal energy systems.
Membrane: Special high thermal resistance.
Peak Tolerance: Until 130ºC during 60 minutes.
Nominal Serving Temperature: From -10ºC until +100ºC.
Fluid Compatibility: Water and antifreeze (glycol) mixtures up to 50%.
Factory Precharge Pressure: 2.5 bar.
Exterior Finish: Protective epoxy paint, white color.
Certification: EC (Directive 97/23/EC).

| Capacity (Liters) | Connecting Material |
| 5 to 100 | Zinc-plated steel |
| 220 to 1000 | High-strength brass |
Safety Note: For increased safety in installations with a high risk of prolonged stagnation, the installation of a intermediate heat dissipator vesselThis component acts as a protective thermal barrier for the SMF vessel. Consult our technical team to determine the size of this system.
The SMF cup guarantees its resistance up to 130ºC for one hour. If the temperature exceeds this limit or the stagnation period is longer, the membrane could be irreversibly damaged. Therefore, proper system startup is vital, and in case of risk, a safety condenser vessel should be installed.
The preload of 2.5 bar It is higher than that of standard heating vessels. Before installation, use a pressure gauge to confirm this pressure. The final pre-charge should be adjusted according to the static height of the installation and the filling pressure of the solar system.
Brass offers greater corrosion resistance and is crucial for long-term performance in large installations, where the durability of connections subjected to high temperatures is paramount.
The correct selection and sizing of a SMF Ibaiondo Solar Expansion Vessel It's a critical factor in any solar project. Get involved. contact by phone or email With our engineering team, we offer specialized technical assistance to ensure regulatory compliance and optimal performance of your installation.