pump pvc union measurements

[czb182]

When looking at pool equipment, what do the two numbers on unions mean? Like 2" x 2.5" union. or 2" x 2". I expected to only have one number.

Attached screenshot of particular pump, that says 2" x 2.5" union included, but kit for 2.5" x 3" available. PB hasn't started on equipment pad yet. My main drains are 3" to pad, so not sure if this means I can run 3" to pump, or still need to reduce to 2.5" or 2".

 

[Jimrahbe]

C,

It means that the union can take either 2" or 2.5" pipes... 2" on the inside and 2.5" on the outside..

Thanks,

Jim R.

 

[czb182]

Ah, that makes sense. Thanks

 

[czb182]

I’m guessing if pump supports 2.5” x 3” union then it must be 2.5” internally? Looking at the new Jandy ePumps released late last year.