[dvldoc]

No there is no reason not to use it. But you don't need it, those mount inside and outside just like the other nozzles do. Just take it from the outside and slip the filtered end back up through the hole and tighten it down. Oh yeah pop off the o-ring.

If the pipe was not tapped right or is very thin you will get a loose fit, Since it's a NPT fitting you have to tap a little at a time or it will be loose.