Home / Gas Safety Valves / Safety Gas Valves / 21`s & 22`s Gas Valve Thermocouple Magnet 21`s & 22`s Gas Valve Thermocouple Magnet £14.00 £16.80 (inc. VAT) Magnet Gas Valve Thermocouple Mag Flame Failure For 21`s & 22`s Safety Gas Valves. Description Magnet Gas Valve Thermocouple Mag Flame Failure For 21`s & 22`s Safety Gas Valves. Reviews Customer reviews No reviews left yet Write A Review Sort byMost RecentTop Rated No reviews have been left for this product, be the first to leave a review