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Do copper sprinkler systems require "copper" plated hanger and seismic components?
For some reason I remember the issue with copper was the moisture collecting on the piping due to the pipe sweating. Something related to sprinkler systems always staying at room temperature and they do not "sweat". Thanks in advance! Sent in anonymously for discussion. Click Title to View | Submit Your Question | Subscribe
5 Comments
Todd E Wyatt
11/18/2022 08:25:25 am
It is recommended ("should") by 2021 NFPA 13 :
Eric R
11/18/2022 08:53:16 am
You are likely going to need special hangers regardless of any specific code requirement just due to the difference in copper pipe's outside diameter compared to steel.
Brad K
11/18/2022 08:54:41 am
Caddy and others have listed Epoxy coated or felt lined ring hangers. The Felt Lined data sheet (115FL) from caddy is useful to convey the prevention of electrolysis.
Greg S.
11/18/2022 09:05:09 am
Yes and no. Copper needs to be electrically isolated from steel, especially galvanized steel, so coated or lined hangers are needed based on the chemistry. For 13D systems, hangers prescriptive to the plumbing code may be used, so you may see the split plastic one or two hole hangers. Keep in mind that copper is used in a lot of specialist applications like MRI rooms-will it need non-ferrous sprinklers, hangers and attachments due to proximity to the MRI? In that case, yes.
Mark Harris
11/18/2022 09:39:18 pm
Grinnell Anvil or whatever name it is now had a coper coated adjustable swivel ring fig CT-69 that was steel with copper finish. Looked like the fig 69 hanger style used with black steel pipe. Leave a Reply. |
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