Thread: Difference between 1.5" and 2" drain in overflow
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Old 01-20-2010, 10:01 PM
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Quote:
Originally Posted by mark View Post
sphelps,

any idea of the max gph?
The cross sectional area between the 2" and the 1.25" pipe is very close to the area of a 1.25" pipe. So both the primary and secondary should each be capable of flowing what is typical for a 1.25" drain.
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