Sorry - didn't see the reference to the tubes in the sketch. My bad.
Looking at the drawing again, It appears the boiler part of your design contains no boiler tubes, which to me, would make it a lot less efficient....
Are you really planning on building this for 150 psi steam pressure. It would appear you have a lot of experience (or knowledge) with this...
It is very unusual to pressure test anything, boilers included, with air. Always use water. (Hence the name - Hydrostatic test). And any real...
I borrowed a 6 inch core saw from work, but a half decent rental place should have them. It took about 20 minutes or so to go through a 14 inch...
Separate names with a comma.
