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wall pipes vs. sleeves
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Source：Internet Author：Unknow Pubdate：2008-03-19
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vodeni (Civil/Environme)
2 Nov 07 11:25
I am interested in hearing your experience in using wall pipes versus using wall sleeves for penetration of D.I. pipes through new construction. Pro and contra for each method. Thank you all!
SteveWag (Civil/Environme)
2 Nov 07 14:47
I prefer sleeves or in most cases a formed round holes. It eliminates two joints. Anything that projects beyond the face of the wall will make the formwork very hard. Flush wall pipes need to be custom made to match the wall and don鈥檛 work well for round or curved walls. If you use tapped flanges flush with the wall, then it鈥檚 not just getting the position right, the piping/form guys need to get it right rotationally. In difficult work I use stainless pipe with a welded ring or two to form the opening. The only thing I have found to seal the passing pipe to the hole or sleeve is the Thunderline Link Seal system. They can stand high temperatures, and can be fire stops. They are available with 316 stainless steel and Viton make-up. If the wall is more than 12-inches thick I use two rows of seals and install them so as to allow tightening from the 鈥渄ry鈥
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