Ghrey wrote:Gorgeous parts by the way...
Yes, the sanitary tubing is beautifully finished, highly accurate material. Even the eccentric cone edges were a virtually perfect fit to the tubes and fittings. Although the material is inherently expensive, the nice part is that cutting fees (at least where I ordered this stuff) were incredibly reasonable -- which means you don't have to buy any wasted stock! You just have to know exactly what you want. As far as I know, this tubing is available in a very limited set of sizes (all OD, like all "tubing"): 3/4-inch, 1-inch, 1.5-inch, 2-inch, 2.5-inch, 3-inch and 4-inch tubing. Lengths up to twenty feet, if I remember correctly.
The pieces are produced such that even custom cutoff ends are perfectly smooth (as if cut off in some kind of big lathe) and they fit together EXACTLY for butt welding. The material is available in Type 304 SS (brush finished) and Type 316 SS (high polish inside and out) -- the two materials can be welded to each other with Type 308 filler rod or wire, if you want to mix them for some reason.
The flanges and clamps shown are what are usually known as Tri-Clover, but that's just a brand name, really. The white gasket rings are TFE based material (NOT guaranteed for really high temps -- I finally decided to use glass fibre matt for gaskets). As you can see, the connection for the removable U-bend is a different type threaded fitting. There are several connection methods available, but they all involve butt welding some kind of fitting onto a tube end.
All you ever wanted to know about Sanitary Tubing. Ha.