Is This XH Or SVC Grade Cast Iron Pipe? - Plumbing - DIY Home Improvement | DIYChatroom

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Old 10-23-2012, 08:50 AM   #1
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Is this XH or SVC Grade Cast Iron Pipe?

Can anyone identify the cast iron drain piping in the photos below? I'm trying to determine if they are "Service Grade", or "Extra Heavy" grade. I need to replace the lead pipe, and as I understand it, XH vs SVC will make a big difference in my course of action. I cannot see any markings on the pipe at any point which indicate which type it is. The "T" junction pictured has "3859" on the side. Thank you for looking.

SVC or XH Cast Iron (?):


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Old 10-23-2012, 10:12 AM   #2
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Can't tell by looking at it unless you can see "SV" stamped on the fitting or pipe. The numbers you referenced are probably the fitting's catalog #. You need to measure the OD to be sure. However, since this is in a house I'll bet its SV No reason to have used for extra heavy


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Old 10-23-2012, 10:28 AM   #3
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Thank you for your reply. I do not see anything related to SV or XH stamped on any parts of the pipe that are visible. I do not feel any raised or embossed lettering on the side I cannot see.

The house is about 60 years old. Can I safely assume the chart below would apply for measuring the OD?
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