With the intent of using the CO2 cart as a plenum, it will see full fluctuation of the pressure from hi to low then back to high every shot, would this most likely shorten the service life?
Bob, I just checked .... regular solder won't hold high pressures.What did you use?Sounds like the o-ring option maybe best
Quote from: SpiralGroove on January 18, 2022, 05:24:17 PMBob, I just checked .... regular solder won't hold high pressures.What did you use?Sounds like the o-ring option maybe best It is not just the material hardness and strength that determines if a joint will hold air pressure. If the air pressure helps close the hole, a soft and "weak" material can work as a seal. Else rubber O-ring would not work.With that in mind, a long narrow joint with lead solder wicked in should work. The force on the solder joint is the air pressure multiplied by a very narrow ring area. The much larger force trying to "spit out" the cylinder is carried by the threads. So, providing the soldered joint is much deeper than it is wide, that should work fine. Assuming there is no pin-hole due to a lack of "wetting". But that is what joint prep and flux are for.The above may be answering a question that has already been covered, but it is related to a common misunderstanding about what gas or fluid pressure a given material can stand. Just think of the brass case in a centerfire rifle. It seems like the material is not strong enough to withstand 50 or 60 kPSI. But the point is for the brass to expand, seal against the chamber wall, and let the barrel steel carry the load. The fact that it yields is what enables it to seal. The unsupported sections of brass (or O-ring in a PCP) have a very small area for the gas pressure to act on, and thus don't see more load than that material can support.