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Old March 27th, 2019, 04:19 PM
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Default frozen lines

I managed to keep most of my rig from freezing, but the input line from my tanker to the float box is frozen solid. it's a 1.5" ridged plastic line. any suggestions on how to thaw it out? its warm enough that the outside section will probably thaw by the time I want to boil tomorrow, but the inside section being out of the sun wont thaw for a few days.
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Old March 28th, 2019, 08:17 AM
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Gently use a heat gun or hair dryer. keep moving, do not hold it in one place. A better way is to use heat tape on it, wrap it around or tape it along the bottom, either way.
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Old March 28th, 2019, 06:03 PM
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Originally Posted by Maple Flats View Post
Gently use a heat gun or hair dryer. keep moving, do not hold it in one place. A better way is to use heat tape on it, wrap it around or tape it along the bottom, either way.
Heat tape works well, but don't wrap it overtop of itself or it will burn right through the insulation and short out or cause a fire.
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Old April 2nd, 2019, 05:03 PM
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Can you take it apart and get it inside? We've done this with piping before or you put it on the warm steel roof in the sun and it thaws quickly.
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Old April 2nd, 2019, 07:54 PM
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Dr Perkins is correct. If you wrap the heat tape, do it in a spiral wrap, do not have it overlap at all. Then an insulation jacket works well. For my main line to my sugarhouse I have a 1.5" Spiraflex hose, with a heat tape in an insulation jacket for 2" pipe. I used commercial rather than homeowners heat tape. The Com one is 7 watts/lineal foot, the other usually 3 or 3.5 watts. Even though it has a t-stat, to keep the pipe at 37 F, I only plug it in when I get a frozen line, it only usually takes 30-45 minutes to get flow.
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Old April 22nd, 2019, 06:10 PM
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Originally Posted by webwhere View Post
I managed to keep most of my rig from freezing, but the input line from my tanker to the float box is frozen solid. it's a 1.5" ridged plastic line. any suggestions on how to thaw it out? its warm enough that the outside section will probably thaw by the time I want to boil tomorrow, but the inside section being out of the sun wont thaw for a few days.
I use a torch, once it starts seeping it thaws itself. I have a couple 1" pump lines with sags

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Old June 4th, 2019, 03:26 PM
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On our feed tank outlet we used a shutoff valve with a tee right after the valve. This tee is pointing up and we ran a clear vent line up to the top level of the tank with a piece of foam stuck in the end to keep the critters out. This vent not only acts as a sight gauge for tank level, but lets the feed line drain and fill without being air bound. So if we have sap left over we can shut down with an empty line that won't freeze. We didn't have this at first and ended up overflowing the evaporator because the float was weeping. Just don't forget to rinse out this vent or it will be an eye sore.

There also new smart heat tapes that are installed inside the piping. They are food grade for water supply and actually only warm where the temp is close to freezing. Like if you have 20 feet of it and only a 6 inch spot where it need heat, it only heats that spot. Naturally being inside, they cant go through a valve, but you can run one to the valve from either side.
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