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#1
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Plumbing repair question - cast iron
I have a job coming up that involves replacing a 4" lead closet bend
into a cast iron waste stack. For some reason unknown to me the lead bend is rotting away at about 10 and 2 o'clock... maybe between 10 and 2. I couldn't see without a mirror and I didn't want to feel around up there. The pipes are exposed in a stand up basement area, so have that going for me. My plan so far is to pop the toilet, hack out the old bend, install a new 4" cast iron bend, pack with oakum and schmear in some plastic lead substitute. The plastic looks thick enough to stand in the vertical face of the Y. Does this sound reasonable? I was hoping to find a no hub clamp, but the guy at the parts place said I would have to cut off the hub and that ain't gonna happen. I don't think there would be anything left of the Y to clamp onto after the hub was cut off. The hub is approximately 6" in diameter OD and the 4" bend is about 4 3/8" OD. Is there a clamp that would connect these two? Or does the first idea sound better? |
#2
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Plumbing repair question - cast iron
Major Debacle wrote:
I have a job coming up that involves replacing a 4" lead closet bend into a cast iron waste stack. For some reason unknown to me the lead bend is rotting away at about 10 and 2 o'clock... maybe between 10 and 2. I couldn't see without a mirror and I didn't want to feel around up there. The pipes are exposed in a stand up basement area, so have that going for me. My plan so far is to pop the toilet, hack out the old bend, install a new 4" cast iron bend, pack with oakum and schmear in some plastic lead substitute. The plastic looks thick enough to stand in the vertical face of the Y. Does this sound reasonable? I was hoping to find a no hub clamp, but the guy at the parts place said I would have to cut off the hub and that ain't gonna happen. I don't think there would be anything left of the Y to clamp onto after the hub was cut off. The hub is approximately 6" in diameter OD and the 4" bend is about 4 3/8" OD. Is there a clamp that would connect these two? Or does the first idea sound better? Lead bends often rot out after only 40 years or so of service. Get thee one of these: http://www.fernco.com/Donut.asp for an easy/ permanent fix. I would use PVC/ABS for the new bend. If height is a problem, there are newer fittings which will keep this to a minimum. Jim |
#3
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Plumbing repair question - cast iron
Major Debacle wrote:
I have a job coming up that involves replacing a 4" lead closet bend into a cast iron waste stack. For some reason unknown to me the lead bend is rotting away at about 10 and 2 o'clock... maybe between 10 and 2. I couldn't see without a mirror and I didn't want to feel around up there. The pipes are exposed in a stand up basement area, so have that going for me. My plan so far is to pop the toilet, hack out the old bend, install a new 4" cast iron bend, pack with oakum and schmear in some plastic lead substitute. The plastic looks thick enough to stand in the vertical face of the Y. Does this sound reasonable? I was hoping to find a no hub clamp, but the guy at the parts place said I would have to cut off the hub and that ain't gonna happen. I don't think there would be anything left of the Y to clamp onto after the hub was cut off. The hub is approximately 6" in diameter OD and the 4" bend is about 4 3/8" OD. Is there a clamp that would connect these two? Or does the first idea sound better? Why not use ABS and replace problem all the way to toilet? Use a rubber coupler to join the two different materials. Cast Iron is a pain to work with!!!! If I get the chance I always replace with ABS when doing a remodel. -- "You can lead them to LINUX but you can't make them THINK" Running Mandriva release 2008.0 free-i586 using KDE on i586 |
#4
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Plumbing repair question - cast iron
evodawg wrote:
Major Debacle wrote: I have a job coming up that involves replacing a 4" lead closet bend into a cast iron waste stack. For some reason unknown to me the lead bend is rotting away at about 10 and 2 o'clock... maybe between 10 and 2. I couldn't see without a mirror and I didn't want to feel around up there. The pipes are exposed in a stand up basement area, so have that going for me. My plan so far is to pop the toilet, hack out the old bend, install a new 4" cast iron bend, pack with oakum and schmear in some plastic lead substitute. The plastic looks thick enough to stand in the vertical face of the Y. Does this sound reasonable? I was hoping to find a no hub clamp, but the guy at the parts place said I would have to cut off the hub and that ain't gonna happen. I don't think there would be anything left of the Y to clamp onto after the hub was cut off. The hub is approximately 6" in diameter OD and the 4" bend is about 4 3/8" OD. Is there a clamp that would connect these two? Or does the first idea sound better? Why not use ABS and replace problem all the way to toilet? Use a rubber coupler to join the two different materials. Cast Iron is a pain to work with!!!! If I get the chance I always replace with ABS when doing a remodel. I would like to use a no hub coupling, but the cast iron waste stack has a hub with a 6" OD and I haven't yet found a coupling that will go from a 6" OD hub to the OD of a 4" pipe, but that was only at a local True Value hardware store that is heavy in cast iron plumbing fittings. I will try the local plumbing supply house next to see what they have. |
#5
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Plumbing repair question - cast iron
Speedy Jim wrote:
Major Debacle wrote: I have a job coming up that involves replacing a 4" lead closet bend into a cast iron waste stack. For some reason unknown to me the lead bend is rotting away at about 10 and 2 o'clock... maybe between 10 and 2. I couldn't see without a mirror and I didn't want to feel around up there. The pipes are exposed in a stand up basement area, so have that going for me. My plan so far is to pop the toilet, hack out the old bend, install a new 4" cast iron bend, pack with oakum and schmear in some plastic lead substitute. The plastic looks thick enough to stand in the vertical face of the Y. Does this sound reasonable? I was hoping to find a no hub clamp, but the guy at the parts place said I would have to cut off the hub and that ain't gonna happen. I don't think there would be anything left of the Y to clamp onto after the hub was cut off. The hub is approximately 6" in diameter OD and the 4" bend is about 4 3/8" OD. Is there a clamp that would connect these two? Or does the first idea sound better? Lead bends often rot out after only 40 years or so of service. Get thee one of these: http://www.fernco.com/Donut.asp for an easy/ permanent fix. I would use PVC/ABS for the new bend. If height is a problem, there are newer fittings which will keep this to a minimum. Jim That donut sounds like a pretty good idea. Too bad the tolerances are so tight resulting in hundreds of different sizes that can't be stocked locally. If I could find a no hub coupling that will clamp on a 6" OD hub and a 4" ID pipe I can skate home easy. But I guess the whole idea of a no hub coupling is to use it where there are no hubs. |
#6
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Plumbing repair question - cast iron
Speedy Jim wrote:
Don Young wrote: "Major Debacle" wrote in message ... Speedy Jim wrote: Major Debacle wrote: I have a job coming up that involves replacing a 4" lead closet bend into a cast iron waste stack. For some reason unknown to me the lead bend is rotting away at about 10 and 2 o'clock... maybe between 10 and 2. I couldn't see without a mirror and I didn't want to feel around up there. The pipes are exposed in a stand up basement area, so have that going for me. My plan so far is to pop the toilet, hack out the old bend, install a new 4" cast iron bend, pack with oakum and schmear in some plastic lead substitute. The plastic looks thick enough to stand in the vertical face of the Y. Does this sound reasonable? I was hoping to find a no hub clamp, but the guy at the parts place said I would have to cut off the hub and that ain't gonna happen. I don't think there would be anything left of the Y to clamp onto after the hub was cut off. The hub is approximately 6" in diameter OD and the 4" bend is about 4 3/8" OD. Is there a clamp that would connect these two? Or does the first idea sound better? Lead bends often rot out after only 40 years or so of service. Get thee one of these: http://www.fernco.com/Donut.asp for an easy/ permanent fix. I would use PVC/ABS for the new bend. If height is a problem, there are newer fittings which will keep this to a minimum. Jim That donut sounds like a pretty good idea. Too bad the tolerances are so tight resulting in hundreds of different sizes that can't be stocked locally. If I could find a no hub coupling that will clamp on a 6" OD hub and a 4" ID pipe I can skate home easy. But I guess the whole idea of a no hub coupling is to use it where there are no hubs. I believe someone makes a rubber bushing type adapter which goes into a cast iron hub and fits PVC or ABS pipe into its inside. I seem to recall that it had multiple ridges around its inside and outside for better sealing. Don Young LOL They sure do: http://www.fernco.com/Donut.asp I ended up using a combination of the old fashioned way and the new fangled and it worked great! I got a cast iron closet bend but it was too short by 2 inches. It reached the hub, but only went in a quarter inch or so. I then got a 6" piece of cast iron pipe and packed it into the hub with oakum, but instead of pouring molten lead over the oakum I packed in some lead wool. Then I cut down the closet bend and used a no hub coupling clamp to attach it to the stub. The only hard part was what I thought would be the easiest, removing the lead closet bend. In order to pack in the lead bend without collapsing it, a 1/8" thick cast iron pipe about 3" long was inserted into the lead bend. After cutting off the lead bend just outside the hub, I had to drill out the poured lead and packed oakum as much as possible and then drive a cold chisel in between the hub on the waste stack and 1/8" thick cast iron insert and lever it to break the insert. That was tough going at first. The insert didn't want to break. Once I got that out, the rest was all fun and games. |
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