30 lb vs. 20 lb propane tanks
The PUs that I owned many years ago all had single 20 lb propane tanks. When I bought my first TT in 2006, it had two 30 lb tanks. When I bought my new TT recently, it has two 20 lb tanks, even thou...
Forum Discussion
PartyMarty wrote:
Because the OPD (Overflow Prevention Device ) consumes space within your tank it is best to use the 30 tank instead of the 20 tank .
The OPD consumes a higher percentage of the 20 than the 30 .
Huhh..... A 20 lb tank with or without OPD holds the same amount of propane when filled to capacity correctly. Same for a 30lb. All the opd does it keep you from overfilling the tank. the airspace as a % of capacity is the same for a 20 or 30lb tank.
And a reason NOT to do an exchange. If you notice, many of the places that "exchange" 20lb tanks do NOT fill them to the rated safe capacity. They show in small print the filled capacity and it is less than if you have a 20lb'r filled correctly to it's rated propane capacity.
