Making a steam wand for heating in fermenter

[WhiteDevil504]

Hey guys, so I have been reading Jed's walk down the road to steam filled glory and I am jealous...what I'd really love would be a way to bring my big brute fermenters to asking temp that doesn't involve me tipping a large pot of boiling water in.... While I am reasonably confident I am done breeding it doesn't mean I want boiling water to encroach upon my valuables. So I had a thought, perhaps a dumb, niece thought but I wanted to get feedback before building and finding a fatal flaw in the event someone else has tried.

My thought is to take a 2" copper plate, silver solder (or perhaps find a more secure system involving a few nuts) a length of 1/2" copper tubing to it with a series of holes drilled along its last few feet. Then use a 2" stainless ferrell to attach (sandwiched between the two pieces with triclamp fittings like a bubble plate would) it onto the 2" stainless coming off the keg boiler.

My concerns are mainly my ignorance in regards to pressure rating on those plates, does anyone see a compelling reason this wouldn't work, or a reason it would be hazardous to mock up and test?