John bones jones

Ok one last question if I keep it schedule 40 and just get a better seal would that be fine and safe as well?

Looking at the pictures would changing the 1/8” x 4” nipples to schedule 80 cause any concerns for how the forge operates? And would it be safe to switch to schedule 80?

Here are some photos as well. 

I tapped it on the side of the pipe. Would it be better to go up to schedule 80 or would it not matter so much?

I see what you mean with the pipe being curved and not being ideal for threads but I was thinking if I go to schedule 80 it might be a better seal? 

18 minutes ago, John bones jones said:

 I think I might know why it’s leaking. The pipe I tapped for the mig tip is schedule 40 black pipe. Can you use schedule 40 or should you always go with schedule 80? Because with schedule 80 being thicker you can put more threads in for a better seal.

Am I able to get away with schedule 40 if I can seal the leak or should I go with schedule 80?

Do you think RectorSeal No. 5 Pipe Thread Sealant Sealant would be good? Or do you have any brand preferences or suggestions?

Well thanks for all the help. If you don’t mind I had 2 other question. Do you think pipe dope would be better then yellow tape for sealing the mig tip threads? Also what is a good pipe dope people use for forge burners? 

Why do your burners not tolerate leaks? 

Yeah my burners are working great and the leak is very small. So It should be ok safety wise?

No I used yellow tape for propane. I sprayed soapy water on the part where the mig tip screws into the pipe and it forms very small bubbles indicating a leak.

My mig tip that’s tapped in to pipe on forge burners has a tiny leak where it screws in. is this safe to use?