After putting it together, I don't really see anywhere that I would need to dissasemble on a regular basis to clean. Maybe the weldless connection on the bottom of the MLT. But even still it's a few turns with the wrench and the connection comes apart. I plan to pump starsan and PBW through the system after every session anyways.
Well for most things I used standard weldless fittings with the only upgrade being flat silicone washers as opposed to round o-rings, I could never get the o-rings to seal properly. With the flat washers most the time finger tight is almost enough.
With the HEX coil I just used standard stainless compression fittings. Which most of the other connections are pretty much exactly like this. Except in the place of the compression fitting I just used either a half coupler and a close stainless nipple or a stainless lock nut.
Goes from inside the kettle to outside.
Compression Fitting Stainless Shim/Washer Silicone Washer
Kettle Wall Another Silicone Washer Stainless Shim/Washer Stainless Pipe Coupler
And then finally a stainless QD from MoreBeer
Now granted McMaster isn't the cheapest option so I sourced alot of my stuff from either buyfittingsonline or bargainfittings.
If you have any questions feel free to ask