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Metallurgy of Copper
| old mart | 03/06/2022 20:34:32 |
| 4655 forum posts 304 photos | We used mostly monel on aircraft oxygen systems, I thought tungham was only for ground use. It was nearly 50 years ago, and as far as I recall, the fittings were made in the USA. Our old system was stainless steel put in before I worked there, and there was a funny story about it. When they fitted it, part ran through a small room used as an office up near the ceiling. The door opened inwards and there was a joint with the olive fitted backwards. It blew off when the pipe had a few hundred psi in it as the system was being tested for the first time, and pressurised the room just enough for the people in there to be trapped until the reciever emptied. |
| J Hancock | 03/06/2022 20:52:25 |
| 869 forum posts | Significant over pressure on a shut ball valve will drive the ball right through the seat material and damage the ball such that it will leak in further use. Thermal expansion of trapped product in a long line proved that , until we fitted the proper units to stop the problem. |
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