Hmmm, before answering your question, I'm not sure I understand your intention. Normally you'd pull from the bottom of your MLT (e.g. via a falsebottom and valve), run it through the HERMS then return it back to the top of the MLT. This ensures a consistent temp throughout the mash. So you're planning on pulling from the top of the grain bed? And returning where?
Ok cool. I was worried when you said "intake" you meant you were pulling from the top, but it sounds like you're looking for ideas on how to build the return.
Here's a pic of what I used for a return. I just punched a hole in the lid and used a PVC electrical fitting as a bushing. I added thumbscrews so I could adjust for varying grain bed heights. Hoses attach via camlock fitting and the other end uses a siphon sprayer (gently sprinkles the returning mash liquor).
View attachment 289480
Enter your email address to join: