Venting Propane tank
Had a strong gas odor out by the 2 30G gas tanks yesterday. Pulled off the cover and sprayed down all the connections with soapy water looking for a leak. When I did so the pressure vent at the back o...
Forum Discussion
Clay L wrote:
The vent pressure of most LP tanks is 250 psi.
I found a chart that shows that propane at 80 F will have a pressure of 140 psi. Using the ideal gas law I found that the temp would have to go to 500 F before the tank pressure reached 250 psi. That seemed high and even though the calculation is simple I used a couple of on-line calculators and got the same answer.
The chart is HERE and one of the calculators I used is HERE
It doesn't appear that an enclosed compartment, truck or car interior is going to get hot enough to cause venting.
The temperature is actually about 125 F to reach 250 psi. You need to calculate the vapor pressure of propane.
