Or if you prefer, here's a gimmicky one that I built for about $5 using cpvc. I use it for the recirculation return, as a sparge arm and for the return again when whirlpool chilling with a pump. It's fully adjustable vertically for various batch sizes:
Shown here testing it intially with only water:
And this for the recirculation return while mashing:
A close up of the 90's attached to the ends. These are not glued on and can be rotated as desired for the swirl effect:
It's cheap, effective and very easy to build. Works for me.