s7595, you've been on here a while now it seems, longer than me, you know how the search works - even looking in new posts you will find the overfilling LP tanks and another thread currently out there about HP vs LP, that contains a bunch of links to a whole myriad of other threads (i know i posted those links) that will give you more info than you know what to do with. I hate telling people to do a search, so here are those two threads:
HP vs LP and
Overfilling Lp 85/95's - arent i nice to you
WRT your questions:
1) I was wondering does any one push the pressure on there tanks.
- Yes
2) I am looking for tanks to set up as doubles .the issue seems to be the weight faber95's are the perfect,but i feel I need pst e-119 (120 cubic) as I tend to use a lot of air ,the pst at 41lbs are I feel a little to heavy.
- Have you tried out these tanks, they are a little stubby on we taller divers particularly as doubles? The E8-119's are "almost" exactly the same as the old LP95's by PST when pumped to the same pressure, of course one is "officially" rated for it the other isnt.
4) I was told that a 95 with 3500 psi would give 105 cubic is that true.
- No, they give you more than 105cuft. If 2400psi=95cuft, 3500psi=138cuft, although that does seem rather large to me, so i am wondering if my math is screwed up 95*3500/2400 - assuming they are 95cuft not 98 etc.
5) does over pressureing the tank kill it after 5 years of service?
- Not going to get into that one, read the other threads, some say yes, some say no. 5 years is time for the first hydro, some LDS's wont fill them beyond the 10% overfill (ie a "cave fill") after that, from what i hear.
6) what tanks are best for trimex?
- No idea, the guy i bought my HP-120's from used to use them for trimix, so i guess they are ok for it, i have also seen trimix in LP104's, so i assume you can use HP or LP tanks, but i really dont know much about that. There is a myth about using HP tanks with nitrox that is unfounded, but people still keep on with it, wondering if trimix arguements might be like that!
