Horizontal 20 lb. propane tanks.
Okay, now I'm confused. I just got an email ad from a particular RV vendor and they are selling horizontal 20 lb. propane tanks for $157. What is the deal and why would they be so much more expensive ...
Forum Discussion
Dutch_12078 wrote:My tank was manufactured earlier than that, and there is no requirement to add an OPD, as there is with cylinders.mike-s wrote:Dutch_12078 wrote:They not required to have them. Mine only has a "spit valve."
Not meaning to nit-pick, but ASME tanks had an overfill prevention device (OPD) years (1984) before they were mandated on DOT cylinders (2001). They use a bit different design due to the differences in filling, but the purpose is exactly the same.
The ASME specifications have mandated an OPD on tank fill ports since 1984. The "spit valve" is the Fixed Maximum Liquid Level Gauge that serves as a visible indicator of a full (80%) tank. Most DOT cylinders also have a "spit valve" that serves the same purpose.
