sizing my durso standpipe

[Daddyrawg]

my builtin overflow is a square measuriung only 5 x 5".. The drain hole/Bulkhead is a whopping 2.5".. which fits a 1.5" pipe. I was thinking of going durso standpipe but then realized 1.5" piping and T and all that might not fit in this section. can i go 1.5" to 1" reducer and create a 1" standpipe
instead of 1.5" .. does reducing the pipe size have any ill effect and do I even need a durso standpipe?

Thanks

[Daddyrawg]

Going with 1"

Thanks everyone for not answering my easy question lol

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[SantaMonica]

Smaller diameter can cause lower frequency surging. As the water level in the drain pipe raises and lowers, it will have to travel farther in a smaller pipe, which takes more time. So the time between "silent" and "trickling" will take longer, than with a larger diameter.

Mine was 1" that I ran for six years or so.

[Daddyrawg]

Originally Posted by SantaMonica

Smaller diameter can cause lower frequency surging. As the water level in the drain pipe raises and lowers, it will have to travel farther in a smaller pipe, which takes more time. So the time between "silent" and "trickling" will take longer, than with a larger diameter.

Mine was 1" that I ran for six years or so.

Thank you sir

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