Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Continuing my electric boiler build.I’m searching for technology as I’m new to much of this. My electric boiler will have two immersion heaters one 750 watt one 1200 watt. I plan on two separate plug in at my home so I don’t overload circuitry I’m looking for a timer so I don’t accidentally lave it on also looking for an automatic level controller. This thing is getting more complicated every day. Now lunch conversation turned to materials for fittings. Brass or bronze since I’ll be making some special ones I have a choice the boiler is 4” 3/16” wall aluminum tube with 1/2” end caps. Teflon o rings I’ve added a through rod with bolts tapped and sealed for extra strength. Opening or ports will be tapped into the tube so no welding 1/8 and 2/16 npt tapped holes I also have ports provided for magnesium anodes I have magnesium round stock so I can make custom sizes if necessary so what’s preferred? Bronze or brass fittings I can get either I think. Some gages come with brass that I can only use as is but I can purchase most of what I need in either material. I can get brass hex but bronze only comes in round I can still make  what is needed the hex block with 5 c collet works every time so I need som each here.I wish I had drawing but I really add a mess by spilling water all over my working sketches. I’m trying to re make them now.

Byron