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| 5-1/2" Superheater Flues? https://www.rypn.org/forums/viewtopic.php?f=1&t=43306 |
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| Author: | Kelly Anderson [ Tue Apr 30, 2019 3:54 pm ] |
| Post subject: | 5-1/2" Superheater Flues? |
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| Author: | hadder [ Wed May 01, 2019 10:51 am ] |
| Post subject: | Re: 5-1/2" Superheater Flues? |
Kelly, Does Anderson Tube not handle this size? Eric |
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| Author: | Jeffrey Fefferlyn [ Wed May 01, 2019 12:03 pm ] |
| Post subject: | Re: 5-1/2" Superheater Flues? |
hadder wrote: Kelly, Does Anderson Tube not handle this size? Eric According to AT's website, they carry 5.50" SA-178 tube. I think Kelly is after a certain gauge thickness that has become scarce. His complaint was the available thicker gauge tube heat absorption rate would cause issues with the fluesheets bowing and/or star cracking from unequal expansion/contraction with lighter gauge 2" tubes. Might be wrong, but that's what I recall. Jeff |
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| Author: | Kelly Anderson [ Wed May 01, 2019 1:59 pm ] |
| Post subject: | Re: 5-1/2" Superheater Flues? |
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| Author: | Bobk [ Wed May 01, 2019 10:43 pm ] |
| Post subject: | Re: 5-1/2" Superheater Flues? |
But why 8 or 9 gauge with the problems that can come with using a thicker wall tube? Have you checked the mills, not the fabricators, to see if they are currently running 5.5? |
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| Author: | Kelly Anderson [ Thu May 02, 2019 7:34 am ] |
| Post subject: | Re: 5-1/2" Superheater Flues? |
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| Author: | Bobk [ Thu May 02, 2019 1:05 pm ] |
| Post subject: | Re: 5-1/2" Superheater Flues? |
Kelly, I didn't take into consideration the engineering behind increased thickness and OD of the tube. Nope, use 3.5" flues so 10 is just fine. |
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| Author: | Dick_Morris [ Thu May 02, 2019 4:28 pm ] |
| Post subject: | Re: 5-1/2" Superheater Flues? |
While on the subject of tubes - we are looking for a source for 10 ea. #SA-178-A 1.50" OD X .135 WASL, 20 ft lengths for repair of super heater assemblies. A local supplier indicated they had a source, but due to a substitution and bad communications, when they arrived they were only .065 wall. We are back to looking for a source. Any suggestions? |
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| Author: | Bobk [ Thu May 02, 2019 5:10 pm ] |
| Post subject: | Re: 5-1/2" Superheater Flues? |
[quote="Dick_Morris"]While on the subject of tubes - we are looking for a source for 10 ea. #SA-178-A 1.50" OD X .135 WASL, 20 ft lengths for repair of super heater assemblies. shows on the floor. https://www.metroboilertube.com/inventory.html |
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| Author: | Dick_Morris [ Thu May 02, 2019 8:08 pm ] |
| Post subject: | Re: 5-1/2" Superheater Flues? |
Bobk - Thanks, we sent them a note. |
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| Author: | Donald Cormack [ Fri May 03, 2019 8:02 am ] |
| Post subject: | Re: 5-1/2" Superheater Flues? |
Dick_Morris wrote: While on the subject of tubes - we are looking for a source for 10 ea. #SA-178-A 1.50" OD X .135 WASL, 20 ft lengths for repair of super heater assemblies. A local supplier indicated they had a source, but due to a substitution and bad communications, when they arrived they were only .065 wall. We are back to looking for a source. Any suggestions? Superheater units are generally made of ASME SA-106 grade Gr. B or C compared to SA-178A which is typically used for flues and tubes. The ERW seam may promote corrosion of the units prematurely compared to the seamless SA-106 grade. You may have better luck with availability as well. Food for thought anyway. Best, DC |
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