(b) Turn the regulator knob on the tank CCW (all the way out).
(c)
Turn off the tank by turning the valve CW.
(3)
Solder a swage joint with 25 percent to 45 percent silver solder.
(a) Obtain copper tubing pieces prepared for swaging and clean the
inside of the swage tubing and the outside portion of the other piece using crocus cloth.
NOTE:
After you clean them, do not touch the clean surfaces with your fingers
because the oil from your fingers will get on the tubing, and the solder will not
adhere to it.
(b) Position the two pieces of tubing together and secure them in a
vise.
(c)
Apply the 25 percent silver solder flux all around the joint using a
(d) Bend a piece of 25 percent silver solder about 1/2 inch from the
end using pliers. (This is all you need to solder the joint.)
(e) Ignite the torch.
(f) Point the flame at the center of overlapping joint. The blue tip of
the flame should be about 1/8 inch from the joint. This will heat both pieces of tubing
equally.
(g) Move the flame around the joint. When the tubing becomes red
hot, touch the solder to the opposite side of the flame. The solder will melt and flow
around the joint when joint is hot enough.
(h) Extinguish torch.
(i) Obtain a professional appearance on the soldered joint by wiping
the joint with a wet rag to cool the joint and remove the flux.
(4)
Solder a swage joint with 15 percent silver solder or silver braze.
(a) Obtain copper tubing pieces prepared for swaging.
(b) Position the two pieces of tubing together and secure them in a
vise.
(c)
Position a piece of 15 percent silver solder (flat stick) for soldering.
MD0367
1-10