Expansion vessel IMI Pneumatex STATICO SD 12.10 for solar systems

IMI Pneumatex STATICO SD 12.10 is an expansion vessel engineered for closed solar heating circuits. It accepts thermal expansion of the heat transfer fluid and maintains system hydraulic balance by compensating pressure variations. The diaphragm-type design separates the gas pre-charge from the solar circuit fluid, helping to protect collectors, pumps, valves and heat exchangers while supporting stable operation over temperature cycles.

Advantages

The STATICO SD 12.10 offers compact dimensions and a diaphragm configuration that reduces risk of fluid–gas mixing and ensures reliable pressure damping in small to medium solar loops. Its construction is suited to resist repeated thermal cycles, providing predictable expansion capacity and straightforward integration into existing solar heating systems. The vessel simplifies pressure management and decreases the frequency of manual interventions.

Suitable for

• Closed solar thermal systems in residential and light commercial installations
• Systems requiring a diaphragm-type expansion vessel for thermal expansion compensation
• Installations where protection of collectors, pumps and heat exchangers from overpressure is needed

When it may not be suitable

This expansion vessel is intended for closed-loop solar circuits and is sized for small to medium capacities; it may not be suitable for very large commercial solar fields or systems with unconventional fluids without verification. If your project requires very high expansion volumes, different connection types, or specific approvals for atypical heat transfer fluids, choose a vessel rated and sized specifically for those conditions.

Key specifications

• Type: Diaphragm (membrane) expansion vessel for solar applications
• Application: Closed solar heating circuits—hydraulic compensation for thermal expansion
• Function: Separates gas pre-charge from system fluid to absorb pressure increases
• Typical installation position: Mounted in the solar circuit where pressure damping is required

How to use

Install the STATICO SD 12.10 in the solar circuit according to system design and local codes, ensuring correct orientation and secure hydraulic connections. Pre-charge the gas side to the recommended pressure for the specific solar loop (matching system static pressure and layout) before filling the circuit. After installation, fill and bleed the system, then verify operating and pre-charge pressures once the loop reaches normal operating temperature. Regularly inspect for leaks and verify pre-charge pressure at planned maintenance intervals.

What to consider before purchase

• Confirm the vessel’s expansion capacity is appropriate for your solar loop volume and maximum temperature
• Check compatibility with the system fluid and required operating pressure range
• Verify mounting and connection requirements match your installation space and fittings

Usage recommendations

For reliable performance, set the gas pre-charge to the static pressure of the filled system and re-check after the first thermal cycles. Include the expansion vessel in periodic maintenance checks to ensure pressure stability and system protection.