pishta
I know I'm right....
Got an exhange tank for the bbq and it didnt have a fill guage on it. I quickly took a look at the one i turned in and grabbed the one off that. To my suprise, its just a plastic 'fob' that is clipped to the OPD valve, nothing connects it? WTH, does this register the temp of the OPD valve and determine what the level is off that or something? Strange little device....attached it and it sees full tank.