Figure 3-44.Typical copper fittings.
Tinning is the process of applying a small amount of
solder to the end of the copper before it is inserted into
the sweat fitting.
generally use methylacetylene propadiene (MAPP)
cutting/welding equipment or a Presto-lite heating
In soft soldering, heat is applied directly to the
metal with a flame. Various types of heat-generating
equipment are available. In your work, however, you
The Presto-lite torch is ideal for SOFT SOLDER-
ING because it delivers a small controllable flame. The
Presto-lite unit consists of a small MAPP-gas cylinder,