While I understand that can be a problem, I'm talking about in legitimate propane distribution infrastructure. An example is here: https://www.lpgasmagazine.co

While I understand that can be a problem, I'm talking about in legitimate propane distribution infrastructure. An example is here: https://www.lpgasmagazine.com/ammonia-contamination-episodes-bring-acute-safety-operational-risks/ https://www.lpgasmagazine.com/ammonia-contamination-episodes... From what I understand, the steel tanks are built to the same standards for both gasses, but ammonia is corrosive to copper alloy valves and fittings. Trucks can be built to haul both and don't use copper alloy fittings. Propane only systems (like home heating systems) contain copper alloy fittings, and the valves and fittings can fail.