steel LP 77 overfills .. question

[211ratsbud]

by that logic, tanks should be filled to less than the rated working pressure after easter until halloween just in case they are stored in a hot car during the summer

Lol
Tank ratings are at a specific temperature. I wonder if the OMS and Faber volume discrepancy was stp vs ntp.

Stp is 1 bar at 32°f/0°c

Ntp is 68°f/20°c and 1 ATM.

 

[HeatCker]

do you, that overfill your LP tanks, change the valve to a higher rated valve???
i have 2 steel XS Scuba Worthington LP 77's with thermo valves rated to 2400 psi, burst disk 4000 psi

 

[runsongas]

the thermo valves are fine, just a good idea to change the burst disc to 5000+ psi if you plan to overfill to 3200+ psi. less than that, you should have enough headroom just to keep using the 4000 psi disc.