Thanks for your responses, I should clarify that these are used in a temporary situation, as the vessels need to be moved on a routine basis. The gasket I am using is of Viton material, rated -40° to +400° F, and the ears have a locking mechanism to prevent accidental un-latching. Wish me luck!
I am using a cam and groove hose coupling at the end of a 1- 1/2" ball valve attached to a metal braid hose, ~6ft in length. The female end is on a vessel rated a MAWP of 75PSI @ 360F. The cam and groove coupling is rated for 250psi @ 72F. My maximum working pressure is ~70psi @ 200F, and I...