Unless it is very low or no pressure or well supported, the piping is going to soften and sag. It is only designed for low temperatures, not steam temperature.: I just designed/built my own steam humidifier out of, : among other things, ABS pipes & fittings. There is : steam going through these pipes. Am I going : to be breathing in toxins and carcinogens? If so, : (a) what should I have used, (b) Ive already been : exposed for an hour. Is that bad?: Charles