The Helios MTVA 75/80 is a small-format exhaust air valve designed for efficient ventilation in a wide range of room types, especially where non-combustible system components are essential. It features a tamper-proof, preset volume flow for consistent operation. The valve is finished with an epoxy powder coating to ensure long-term corrosion resistance. A surrounding foam ring ensures an airtight connection, preventing lateral air leakage. Compact and reliable, the MTVA 75/80 is ideal for controlled air extraction in safety-critical and general-purpose applications.