enblethen wrote:
ASME tanks are the standard tanks used for permanent installations on RVs.
ASME RV tanks
DOT tanks are standard for removable/portable tanks.
DOT tanks
You are correct. The ASME tanks that I have seen for permanent use on RVs have the valve protection on them. As I stated earlier, my major LP supplier inspected mine and put a DOT inspection sticker on them, not because they were required, but to eliminate some confusion for suppliers that won't fill a tank if they don't see a certification. My Camper may be old, but my family is the original owner and the Manchester ASME tanks are original to that camper.
The poster above is absolutely correct, as I understand the law, ASME tanks don't require recertification.