11-04-2022, 06:11 PM
From what I have seen repairers do a lot of work with direct flame, and very fine for leaks.
My plumber father worked with a firm where one staff did radiators so had observed, although he took graet care not to become involved in the unhealthy process. At home he replaced a core in a "modern" working with just his plumbers petrol iron. (Which come up very cheap at flea markets and if you do not have other uses for gas, avoids a lot of expense and inconvenience. Although it is easy to eliminate eyebrows and workshop). To free tanks, these are gently hammered while the solder is melted so it does not reunite.
My plumber father worked with a firm where one staff did radiators so had observed, although he took graet care not to become involved in the unhealthy process. At home he replaced a core in a "modern" working with just his plumbers petrol iron. (Which come up very cheap at flea markets and if you do not have other uses for gas, avoids a lot of expense and inconvenience. Although it is easy to eliminate eyebrows and workshop). To free tanks, these are gently hammered while the solder is melted so it does not reunite.