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To obtain functional joints, the inside of the fitting and the outside of the copper pipe are cleaned using steel wool or cleaning tape, flux paste is applied, the pipe is inserted into the fitting and heat is applied from a portable butane torch or propane torch until a ring of solder shows at the edges of the fitting. To obtain a durable ...
Of the three methods of connecting copper tubing, solder connections require the most skill, but soldering copper is a very reliable process, provided some basic conditions are met: The tubing and fittings must be cleaned to bare metal with no tarnish; Any pressure which is formed by heating of the tubing must have an outlet
Copper to lead joints may be made by wiping the lead onto the copper pipe, as for a lead-lead joint. However the Pb 80 Sn 20 solder used for wiping is poorly wetting onto copper, and so that must be tinned first, using a more tin-rich solder and an active flux.
Amendments to the Safe Drinking Water Act require new drinking-water waterpipes, solder, and flux to be "lead-free"; however, this is defined as less than 8% lead in pipes, and 0.2% in solder and flux. [10] It is possible to make plumbing fittings from metal that literally does not contain any lead. [7] 1996
The pin tip, brazing alloy, flux and lug cool into a homogenous unit. The pin brazing process is well suited for joints between insulated pipe sections, connection to measuring cables, installation of sacrificial anodes and bonding zinc bracelets to offshore pipelines, due to the ease and speed of installation, high mechanical strength and ...
The use of flux or self-fluxing material is required to prevent oxidation. Torch brazing of copper can be done without the use of flux if it is brazed with a torch using oxygen and hydrogen gas, rather than oxygen and other flammable gases. Machine torch brazing is commonly used where a repetitive braze operation is being carried out.