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Old 01-22-2014, 09:38 PM   #1
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Riser clamp size


I need a riser clamp to hold a section of my cast iron stack while I cut it. The outer dimension of the stack is 5" so I asked for a 5" riser clamp. But it seems to big. I expected it to wrap pretty close around the pipe but it doesn't. Did I ask for the wrong size?

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Old 01-22-2014, 09:47 PM   #2
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Riser clamp size


Sure it's not a 4" pipe?
http://www.engineeringtoolbox.com/ca...ns-d_1751.html

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Old 01-22-2014, 10:17 PM   #3
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Riser clamp size


I'll check the measurements. Thanks.
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Old 01-22-2014, 10:39 PM   #4
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Riser clamp size


If this is a residential house you have 4" cast not 5".
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Old 01-23-2014, 12:29 AM   #5
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Riser clamp size


Quote:
Originally Posted by joecaption View Post
If this is a residential house you have 4" cast not 5".
Ive never even seen 5" pipe .
3-4-6-8-10.........
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Old 01-23-2014, 12:36 AM   #6
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Riser clamp size


Quote:
Originally Posted by plummen View Post
Ive never even seen 5" pipe .
3-4-6-8-10.........
Its rare but it does exist, seen it twice in 25 years.
OP- get a clamp for 4" CI. Lengthen the bolts if needed
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Old 01-23-2014, 06:24 AM   #7
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Riser clamp size


Agree with TheEplumber..
We not have much uses of drain iron stack. but if size is your're sayin..5"
the best option in a 4" riser clamp ..
A normal riser clamp have 2" screw.. so it is good with that
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Old 01-23-2014, 09:33 AM   #8
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Yeah I remeasured and I don't know how I convinced myself it was 5 inches. Going back to get a 4 inch clamp.
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Old 01-23-2014, 01:00 PM   #9
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Riser clamp size


Quote:
Originally Posted by dgfit View Post
I need a riser clamp to hold a section of my cast iron stack while I cut it. The outer dimension of the stack is 5" so I asked for a 5" riser clamp. But it seems to big. I expected it to wrap pretty close around the pipe but it doesn't. Did I ask for the wrong size?
Ayuh,.... There's yer Problem,.....

Pipe is sized by it's Inside Id,...
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Old 01-23-2014, 08:28 PM   #10
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Riser clamp size


The 4" clamps fit great

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