Stainless and ductile pipe connection
Stainless and ductile pipe connection
(OP)
Need to connect new stainless steel piping with existing ductile iron outside application. Both sides with plain end. The piping is for compressed air, low pressure. Should we weld the flanges or use some type of uniflange, should we worry about disimilarity of material. Do we need a special kind of gasket?
Thanks
Thanks





RE: Stainless and ductile pipe connection
Let me know about which weld proceedure that you propose to use between ductile iron and stainless steel. I am very, very interested.
Ductile iron is not commonly used in any type of compressed air system. What pressure do you consider to be "low pressure" ?
Is the ductile iron pipng system being "re-used" from another use ? Drainage perhaps ?
-MJC
RE: Stainless and ductile pipe connection
Steve Wagner
RE: Stainless and ductile pipe connection
RE: Stainless and ductile pipe connection
RE: Stainless and ductile pipe connection
I would give Acipco (American Ductile Iron Pipe) a call as I believe they did make a fitting for your situation.
http://www.acipco.com/adip/
RE: Stainless and ductile pipe connection
Another issue: how to seal a penetration of a stainless pipe through the foundation slab. Should it be grouted or would some sort of seal work? And also the pipe continues vertically for about 12 feet before turn horizontally. The subbase is compacted fill. Should the pipe be embedded in concrete (it's air, or maybe just supported at the bottom where turn horizontally, or not supported at all?
Thanks again
RE: Stainless and ductile pipe connection
ht
Back to Acipco. They have specials in DI for wall penetrations. The closest I know about of similar construction in SS is an anchor flange.
http://www.acipco.com/adip/specials/wall/
RE: Stainless and ductile pipe connection
RE: Stainless and ductile pipe connection
http://www.ebaa.com/Products/1000-2100/1000.pdf
The penetration through the floor or wall should be sealed with a seal, I use Link-Seal made by Thunderline Corp. I usually cast a S.S. sleeve in the concrete wall for new work and core drill a hole for existing work. I would support the vertical run from below, maybe with a haunch poured with the wall or a fabricated support if the wall exists.
http://www.linkseal.com/
Steve Wagner