Eheim Metric Tubing Conversion - The Planted Tank Forum
Old 10-18-2005, 10:34 PM Thread Starter
Doesn't like Kool-Aid

Join Date: Feb 2003
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Eheim Metric Tubing Conversion

Since it has been asked on the forum several times, here are the Eheim metric tubing conversions:

Eheim Metric Tubing Conversion
9/12mm = 3/8"
12/16mm = 1/2"
16/22mm = 5/8"
25/34mm = 1"

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Momotaro is offline

Old 09-06-2011, 09:12 PM
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That ID or inside diameter!
150EH is offline
Old 09-06-2011, 10:16 PM
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the first number in mm is the inside, the second is the outer and the converted tubing size is Outer diameter. the inside should be the same but we dont have those fractions :P
HolyAngel is offline
Old 09-10-2011, 03:01 AM
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Quote:
Originally Posted by Momotaro View Post
Since it has been asked on the forum several times, here are the Eheim metric tubing conversions:

Eheim Metric Tubing Conversion
9/12mm = 3/8"
12/16mm = 1/2"
16/22mm = 5/8"
25/34mm = 1"
The coverted number is SAE (Standard American English) and is what you might see on a wrench or socket as a unit of measurement

3/8 - 1/2 - 5/8 - 1" are all the inside measurements of the tubing 12mm = 1/2" roughly.

The metric number that Eheim uses are ID first (ie 9/12) and OD is second. In English or SAE this would be 3/8 ID 1/2 OD

ID = inside diameter
OD = outside diameter

Sorry to be so thorough but I wanted no confusion.
150EH is offline
Old 09-10-2011, 04:07 AM
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Quote:
Originally Posted by HolyAngel View Post
the first number in mm is the inside, the second is the outer and the converted tubing size is inner diameter :P
Edit: fixed! Thanks 150EH
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