Seagas F1 FFD Flame Failure Valve – 8mm Compression Essential Gas Safety Device The Seagas F1 Flame Failure Device (FFD) / Flame Supervision Device (FSD) Valve is an essential gas safety component for both household and commercial gas appliances. Push-button operation means this safety valve will automatically cut off the gas supply if the burner flame is extinguished, preventing gas leaks and meeting safety regulations. Made from brass and CE certified to EN 125, the Seagas F1 provides flame supervision for a wide range of appliances – from cookers, ovens and gas fires to catering equipment, heaters and laboratory burners. By investing in a reliable flame failure valve you not only meet safety compliance but safeguard lives, property and peace