Steam whistle with chain, thread M6. Attention: This is the spare part for the steam whistle with weight. When using a steam whistle with chain, a spring loaded valve must be on the boiler. for Wilesco D 12 (until 2014),16,161,18, 20, 22, 24, T90

Steam whistle with chain, thread M6. Attention: This is the spare part for the steam whistle with weight. When using a steam whistle with chain, a spring loaded valve must be on the boiler. for Wilesco D 12 (until 2014),16,161,18, 20, 22, 24, T90