Features and Benefits: • Designed for connection to the outlet of regulators and pipelines in medium flow applications. • Non-return valve. • Large cylindrical stainless steel flame arrestor. • Medium-flow capacity. • Supplied with an inlet filter. • Temperature activated the cut-off valve. • Complies to AS4603. • Conforms to EN730/DIN 8521, UL, ISO 5175 class I (fittings to AS4267-1995). • Tested by BAM. • The thermal cut-off sealing element is not in the gas stream and is shrouded from flashbacks. The cut-off valve closes in the direction of flow assisted by a strong spring at an internal temperature of approximately 90°C. The operation is not indicated and the cut-off valve is not resettable by the user. P/N: 308735IND