Originally Posted by Ludo
How can you solder a fitting on a washer soldered on a kettle without melting the solder...
I know it sound weird but I just don't get how you solidify your kettle without damaging your previous solder.
Hope it make sense!
Scut; no solder joint can match a Tig welded joint, silver solder would be way stronger than soft solder.
First I would add a curve to the washers to match the radius of the keg which is a 7 7/8" radius or 15.75" diameter, kegs vary in diameter by manufacture. The thinner the solder joint layer the the stronger the joint will be. Clean the washers, keg, nipple or coupling (your choice) with 80 grit sandpaper allows for more tooth for the solder to adhere. Brush all surfaces to be soldered with stainless acid flux, assemble with applied pressure clamping the washers to each other one inside one outside the keg with the nipple or coupling aligned. Apply heat, when it's hot enough the solder will be pulled into the fitting and washer by capillary action. Using two washers will increase the nipple or coupling strength vs just thru the keg alone. I would silver solder if Tig is out of the question or budget.
Dry firing a keg with gas it can happen i've done it a one of those Oh Chit monents with the fitting hanging from the keg. This is the reason why silver solder is the minimum I would ever use on a fitting with Tig the first choice.
Scut; what you doing up this late your right coast i'm left coast?