Slip or Thread or a combination of both?(sump plumbing)

[moosemj]

Hmm... I guess my advice runs counter to what the other members have posted but I actually prefer glued slip fittings whenever possible, with one caveat: unions. Lots of unions.

I use threaded fittings when I have to but generally don't prefer them because I worry about leaks. Not much of a problem on the drain side because things are all low pressure but I've had issues getting threaded fittings to seal on the high pressure side after the pump or on pressurized closed loops. But I do like to have the option to take things apart and unions make this much easier than unscrewing a threaded fitting.

I agree, less likely to leak with gluing it together. If you put some thought into it you don't need to change much once it's running. Cutting is easy as is gluing it back.


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