Another thing I just read about filling LP tanks is that tanks should be purged or moisture that may cause freezing of safety features. There are certain steps to take when filling a tank for the first time, like pulling a vacuum to remove moisture before pumping LP in. It was said that even LP has moisture in it. This now makes more sense to me about venting while filling. In my mind the venting will allow old, moisture laden, gas to vent while filling the tank with fresh, less moisture, LP. Leaving the old LP gas in the tank will keep past moisture amounts that will be added to new moisture amounts and increase the risk of explosions and/or damage to operating systems with liquid where only gas should be.
I had remembered some tanks had a frost around the vent hole. I shrugged this off as from humidity in the air around the tank but now feel it was moisture inside the tank.
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Beverly & Jim
Sebring, Florida
1991 T-2363 Solaris
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