Below are some pre-numbered flange/coupling bolt patterns for torque
purposes. If you don't want to print these off for you
toolbox, there is a pretty easy little method to use when you're on
the job and need to number a flange/coupling for tightening.
The numbering system is slightly different than the images below but will evenly torque
your flanges/couplings either way for most standards.
Simply take the total number of bolt holes and make 4 columns and
start numbering. Say you have a 24-bolt flange or coupling, use the
following to achieve equal torque.
**Always make 4 columns wide
| Starting with the Number 1 hole,
label the flange/coupling accordingly beginning with the
number 1 and continuing with your odd numbers first, as
shown. Then proceed with the even numbers. |
|
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