Yes but you should test at a pressure that is significantly higher than the maximum operating pressure. In pressure testing pipelines it is not uncommon to test to "yield". This technique actually removes defects.
<font face="Verdana, Arial" size="2">Originally posted by gmatov:
You know, if you put whatever pressure you test at, and the vessel stays at that size, you just might be setting up a burst in the future.
If you test and the vessel doesn't come back to near zero, with indicators all around it, it has stretched, and it will stretch the next time you get to that pressure, and more the next time, till you get a burst.
You are talking minis, so a "little" bomb, but still.
Have to go look at my big train book to see what working pressures were, but they were not very high in the early engines, large pistons, yes, area was good enough for the metals they had.
Pressures were relatively low. When they went too high, big bomb.
Make the vessel of the best metal that is realistic.
Get a hydraulic Porta_power jack, clean it out of the jack oil, put water in it, put a guage on it, and if you need, a pressure regulator. It will make all, or as little, pressure as you need. 20 bucks or so.</font>