- Joined
- Mar 3, 2022
- Messages
- 11
The safety factor is there to prevent too much pressure from building up inside the tank as the liquid gas expands. For example, an increase due to expansion from 80% full to 90% full would roughly double the internal pressure of tank. This type of pressure increase will trigger the pressure relief valve to release propane gas into the atmosphere long before the tank fills completely with liquid propane. Anyone that has heard the hissing sound of a propane tank pressure relief valve in action knows what that type of release sounds like.
It kills me they will not fill the tank to 90 or even 95 percent on a 25 degree day when we have 10 days of sub zero weather coming, easily burning 20 percent of what's in the tank. I used to have a guy that would take me up to 90 or even a bit more since he had some common sense and had the freedom to exercise it.