Brazing a Schrader valve

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I know there is a YouTube video on the subject but my system is to slow. Does any one have any pointers on brazing/soldering a sbhrader valve to a pipe fitting? If someone would watch the video and walk me though the process I would apriciate it.
Reply:1.sand down the copper with emery cloth real clean2.flux the area3.put the heat more on the thicker material  moving  in a circular motion going around the pieces.Draw the solder into the joint.Not too much heat. On the video it looked like too much heat. With experience you'll learn to put the right amount. When the part starts to turn a dull red it may start taking the solder.4. wrap a wet rag around any parts that you dont want to heat or melt. Take any parts out that can melt.Try soldering copper to stainless.THE OLDER I GET! THE  SMARTER MY DAD WAS!Thermal Arc 185 inverter Tig welderABITIG 26  tig torchLotus foot pedalLincoln 225 stick welderClark 185SG Mig spoolgunwelderVictor torch/regulatorsHF36" shear,bender,roller.
Reply:Thanks for the help.
Reply:Schrader valve stems are sort of a delicate  precision part that won't take much heat or abuse. I would avoid heating a Schrader valve fitting.There are many different style Schrader fittings, can't you find one that will work without soldering?Attachment 38001Or at least braze in  a compatible threaded bushing and then thread a Schrader valve into that?Good LuckLast edited by denrep; 10-19-2010 at 11:42 PM.
Reply:As noted above, you can buy shrader valves which have threaded bases. I think I've seen both pipe, and machine screw threads. I've also soldered/silver soldered them into things, using 'valve stems' taken from old inner tubes or standard wheels. What will your fitting be used for; what gases, what pressures, what material is the fitting you want to braze the valve into? Is this for a 'low-pressured' air compressor, or a liquid Hydrogen system?
Reply:As Denrep showe you can easily get the threaded schrader valves. I just grabbed one last week to fix a bad bad one for a well tank. I think it was 1/8" NPT on the end and cost less than $3 at Lowes with thier pump parts. I just soldered on a 1/2" sweat x 3/8" female and used a threaded reducer to install it. I'm sure if I had gone to the plumbing supply I could have gotten one that threaded direct if I wanted..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:hi, out by me they sell schraders with about a 2" piece of  1/4" od copper already factory made and tested. all you gotta do is drill a  1/4" hole in copper if thats what you are fitting to and silfoss in.
Reply:The idea is to get a schrader in in 1/4" npt.I will be soldering tomorrow to see what happens.btw if i had a junk drawer like denreps i wouldnt have to do this
Reply:Schrader valves come apart easily, either get the special tool from a tire or bicycle shop for a dollar or two or make your own from pretty much anything, In a pinch I've used pinch-nose pliers to take out the valve core.  That way you won't be unnecessarily heating the spring or the rubber seal.  Best of luck!
Reply:i did it yesterday and it worked. I took a quick conect fitting for air tools anb filed down the shrader till it fit. Then i put plumbing flux on it and soldered it with an oxygen acetlene torch with the flme adjusted to a rather cool flame. Concentrate heat on the stteel fitting then pushed the solder in to the joint.I used acid core solder and everything went well. The valve core was removed prior to soldering.