|The first thing you need to watch is your tank if you don't have a fuel gage is to watch the frost level and w2hen it gets down to a approx. 1-4 left in the tank turn the valve off and than turn the valve off at the bottle. Now that is said and done. To bleed the air out turn the bottle on than turn on the valve , set to pilot and hold it for 3 minutes. Some say you don't have to hold it that long but I have found with subeam you as just get the sore thumb than to keep trying it. You will smell the gas when it com through. turn off the valve and wait a few moments to let the gas fumes clear the area. Rember cold air the gas will not dissipate.And I think we have enough space travel without you join in the race in space.