steel LP vs HP

[WD8CDH]

I haven't done the math on mine yet but fills on my HP 120's rated 3442 read 4100psi

Any comments?

I've checked with 4 different spg's..... 4100.

That's the same hazard as 3156.6psi in a LP tank. It's about 142 CF.

 

[bevansmw]

Yikes. Speaking as a big fan of overfills here...there are a few shops in my area who will fill 2640psi LP steels anywhere from 3000-3500 cold. However, all of them steer clear of significantly overfilling the old 2250psi LP72s. I don't know exactly why, but ever since finding out, I haven't overfilled the 72s past 2600.

I don't like them filling that high either 3k psi is good, since it cools back down to around 2500-2700 when they fill them, usually better when they take longer and fill on low.

Hydros are due on both of mine next Sep but planning on doing it in Mar when the VIP is up.