High-Tenperature Fittings
High-Tenperature Fittings
(OP)
Hello, All.
I've been looking all over the place for some high-temperature fittings and so far have been unsuccessful. I am designing a small system that will contain hydrogen and carbon monoxide at 1000psig and 430°C. The system is small (I'm only using 1/4" stainless steel or inconel tubing). I'll need to remove my reactor periodically, so welding it in place isn't an option. Any suggestions will help.
Thanks,
I've been looking all over the place for some high-temperature fittings and so far have been unsuccessful. I am designing a small system that will contain hydrogen and carbon monoxide at 1000psig and 430°C. The system is small (I'm only using 1/4" stainless steel or inconel tubing). I'll need to remove my reactor periodically, so welding it in place isn't an option. Any suggestions will help.
Thanks,





RE: High-Tenperature Fittings
You should call your local Parker-Hannifin representative and get their design manual on fittings.
Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada
RE: High-Tenperature Fittings
RE: High-Tenperature Fittings
RE: High-Tenperature Fittings
RE: High-Tenperature Fittings
RE: High-Tenperature Fittings
Whether or not external compression fittings are adequate for a particular service is obviously a matter for good engineering design and judgment. I've used Swagelok fittings quite successfully to temperatures much higher than what you're talking about, on devices with repeated thermal cycling- with design to mitigate these effects. I've also used Swagelok stuff very successfully at pressures and pressure/temperature combinations far higher than what you're talking about.
Cone and thread fittings are far more robust against absolute pressure and against thermal cycling, and are strongly recommended if you don't fully understand the design and service life implications of using Swagelok-type fittings in such a service. However, you'll find that the installation labour for C&T type fittings is at least five times as much as for simple Swagelok stuff, requires special tooling etc.
Good luck with your particular service.