tank remodeling,sump question? (last page)

[The Codfather]

Originally Posted by Seriak

I was told not to use primer so I didn't and no leaks so far.

Did someone just tell you this? Or is it in literature? The use of the primer with the solvent weld is some cases a must. But depends on application and which brand name. The only one I have seen even recommends a primer, but not a must, but only in a drainage application, not a pressure application. Just my 2 cents.