The sparge manifold is pretty simple and in it's current incarnation, it just drains from the "corners" lightly into the mash. I think I will eventually cap the corners and drill holes for the sparge water to sprinkle over the mash. I not sure that will help achieve anything, but may give a better sparge water distribution over the mash.
The HLT is located above and to the right. The sparge water is delivered to the MLT through a short length of tubing through the lid of the mash tun. A pic of the quick disconnect in the lid in below. It has proven to be an effective gravity fed system thus far.
Now for the mash manifold. I have just finished cutting and fitting all the pieces needed. My previous manifold was made of CPVC and serviced me well for the sort time it was used. I did have a couple of problems with it becoming disconnected and decided to make a more secure version of copper. I still have to solder a few connections and drill the bottom (which I am not looking forward to doing) so the mash can drain properly. My old manifold allowed me to hit 80% - 82% efficiency and I expect equal or better results with my new copper version.
I'll post an update when this project is complete and I can confirm my mash efficiency.