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[PSUBS-MAILIST] propane tanks revisited



Propane Tank investigation:
 
I was explaning my design to my diving friend and he mentioned that since my pressure hull is around 28" in diameter that I might consider a propane tank.  I have always discounted the propane tank idea because I felt having to deoderize it wouldn't be worth the effort, but then we discussed buying a brand new one -never been used - from the factory.   I didn't think that would make any difference whether you were buyng a new one from the factory or having one rolled from a fabrication plant  -  but  -  he pointed out that since the propane tanks are mass produced that they are cheaper !  So I called a propane company that I know and sure enough they are a lot cheaper .  For a 250 gal  which is approx 30" X 7'  the cost was $850.00    compared to $2000.00 (a year ago) having it rolled at a fab plant.  I still have to find out the exact specs on the propane tank however,  I'm not sure on the thickness  and I haven't confirmed the grade of steel.
 
Brian