A new valve with rotating axis and steam projector for the cleaning of tubes in the boiler (Machine-translation by Google Translate, not legally binding)

摘要

New valve or rotating shaft and steam protector for cleaning pipes in boilers, characterized by the special valve with rotating steam conduction shaft with its corresponding drive handle carrying inside the rotary shaft a regulating valve at will through of a regulating key of steam passage. (Machine-translation by Google Translate, not legally binding)