cool, yea the bottle is mounted on its stands which is about 45 degrees. but the reason i really ask is because every time after either i use the nitrous or just open the bottle there is always air coming out when i purge first and then the second time i purge is when nitrous comes out. i dont know how air is getting in the system. Can you think of any thing? Another thing is that the line running to the pressure gauge is about 3 feet long. Can that be the problem?