Timeline for Best way to split an existing drain pipe
Current License: CC BY-SA 4.0
11 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Feb 23, 2019 at 2:49 | comment | added | Joe Fala | You can check Wikipedia for more information by searching copper tubing. | |
| Feb 23, 2019 at 2:43 | comment | added | Joe Fala | Fernco couplings don't need much 1 inch is probably good but I always go for more. To clarify the other point. Schedule is the thickness of the wall. Most pipe in plumbing and HVAC is schedule 40 (ABS, PVC, black iron etc.) and the size we call it by is the I.D. Copper pipe size is also called by the inside diameter but its not schedule 40. It uses the chart above. M, L and K thinnest to thickest. | |
| Feb 22, 2019 at 23:31 | comment | added | Jim Stewart | Plan so that the entry point for the new drain would be low enough to drain the planned new sink. If you get it too high, then you might not be able to get the sink to drain into it. | |
| Feb 22, 2019 at 19:58 | comment | added | Val Blant | Also a follow-up question: How much pipe do I need to leave in order for that Fernco couplings to grab reliably? | |
| Feb 22, 2019 at 19:52 | comment | added | Val Blant | @JoeFala Thanks for the advice! One question though - where did you get that NPS table from? Why is the info so different from what Wikipedia's table says? Other sources also seem to suggest that this OD corresponds to a 1-1/4" pipe, not 1-1/2"... Why the discrepancy? en.wikipedia.org/wiki/… | |
| Feb 22, 2019 at 13:38 | comment | added | Joe Fala | Copper drains aren't really a thing anymore due to the cost. It wasn't always in such high demand and was much cheaper then it is now and easier to work with then lead pipes. Household cleaning and vinegar don't have a constant presence long enough to effect the copper or the solder. Furnace and boiler condensate however, do. This came up in another post on here recently but I don't know how to link it in this comment. Condensate is about the same pH as vinegar and it will eat the pipes. But it takes a long time. Cleaning products are often followed by water and thus have a negligible effect. | |
| Feb 22, 2019 at 13:09 | comment | added | Jim Stewart | What is the history of use of copper piping for drains? This is a premium material and with sweated connections would presumably last a long time. (Of course, waste water could be acidic (vinegar is a standard household product) and would this mobilize lead from lead solder joints?) What about cost compared to standard materials? The only problem I can think of is corrosion from chemical reactivity with certain kinds of cleaning products. | |
| Feb 22, 2019 at 12:15 | comment | added | Joe Fala | I guess the short answer is yes. Lol | |
| Feb 22, 2019 at 12:14 | comment | added | Joe Fala | When talking about sizes, the wall thickness is less important. What is important, depends on if it's piping or tubing. Pipe is ridgid tubing is flexible. So copper pipe is measured inside diameter and copper tubing is outside diameter. For example 5/8 tubing fits inside 1/2 " copper fittings. | |
| Feb 22, 2019 at 11:53 | comment | added | Jim Stewart | Looks like he has copper tubing used for the drains. Is copper tubing classified as to size and wall thickness the same way as the materials normally used for drains, i.e., cast iron, PVC, ABS ? | |
| Feb 22, 2019 at 10:57 | history | answered | Joe Fala | CC BY-SA 4.0 |