Lanso
Cast Iron
- Joined
- Mar 16, 2013
- Location
- Cerritos, CA
I’ve replaced many galvanized stub-outs with stainless from 1/2” supply to 2” drain and never a problem.
Clean the threads of course.
Clean the threads of course.
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Side note, the Diablo carbide sawsall blade did an awesome job of cutting the old one in half to make it manageable to carry out of the basement. No paint left, but sharp as new.
1/2" steel plate. For a shed. Do tell.
I don't think it should be a problem. Only problem I've ever had was screwing new into old. Old threads are usually in rough shape. I hit the mother lode at a garage sale and picked a 1 1/2" and 2" pipe tap. They've saved my ass many a time doing drain lines.
Dielectric union?
Yes, between the galv and SS pipe it might be a good idea.
I didn't read everything in this thread do what you have to do, but stay as for from galvanized plumbing as you can. a lot of stuff is changing over to stainless but there is issues with stainless you need to use the proper pipe dope, get it too tight, it galls and leaks, to loose it leaks, wrong dope it galls and leaks. the brass without the lead is also hard to use and get leak free, basically the dope is what seals everything up. but the stuff that's call galvanized pipe now is so thin and fragile its ridiculous. on drop pipes in wells we use threaded schedule 120 pvc with stainless couplers. a lot of it depends on water quality too
I had a choice of 304 or 316. Maybe I could see some galling with 304 but not 316.
"some galling" haha! guess you haven't done much stainless wrenching...
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