Choose wire length between 20cm, 50cm, 100cm and 140cm from the variation options menu
LEAD FREE Solder wire suitable for pot water systems and heating systems etc
for the FLUX
Brand is LA-CO
Conforms to BS6920
ANSI/NSF Std. 61 Certified
Meets ASTM B813
Use for Cold and Hot POTABLE water, gas pipes etc
For soft soldering of COPPER, BRASS, TIN, MILD STEEL, Galvanised STEEL, ZINC, Silver and LEAD
Not suitable for stainless steel and aluminum
Small quantity, but should be enough to do the job
DO NOT OVERFLUX or will result of bubbling and may cause leaks.
Apply thin film, like applying lip balm
Works when heated
Keep the flux closed, when not in use
Harmful for aquatic life
How to do the job
If you know what you are doing skip that part.
Remove SOIL, Scale, PAINT or any sort of oxidation or debris from the soldering area. Use metal kitchen wool or sand paper (or just the right pipe cleaning tool). You have to see clean shiny metal where the joint will be. That is 82% of the job.
Apply the flux like applying lip balm (thin film) and assemble the joint. Use ear bud, brush or finger (beware the sharp edges)
Remove any excess flux with cloth.
Heat and Solder. Here is the tricky part. Heat the joint and melt the solder with the pipe not with the torch. Slightly move the fire when soldering, you do not want to melt the solder in mid air and waste it. Fill the gap around.
Do not use too much solder, you will fill the pipe inside.
Do not shake the joint while setting. After solder has set remove flux residues with damp cloth. Don't forget to flush the inside
If you are soldering existing system with water in the pipes, drain the pipes. If not possible drain the pipe with small hose or a straw at least 15-20cm from the joint (using the straw does not involve drinking, put the straw in, close the end, take it out, release the water from the straw, repeat). Water will cause you lots of troubles, including boiling, hard time to heat the joint, bad welds etc. Steam will create tiny holes in the joint gaps. Chance to bodge the job, because of water near the joint is almost 82%
Wear some protection like thick gloves and glasses.