Permits mixing of acetylene with air at the torch head, so no other source of air is necessary. The acetylene is stored in tanks as a liquid and only becomes a gas when valve is opened. The silversmith outfit (No. 14.236) includes: torch handle, 1 light flame tip, regulator for "B" tank, and a 6' (183 cm) hose with fittings. Uses "B" tank. Shipping weight 5 lb. (2.3 kg).
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