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Old 07-11-2007, 03:06 PM   #1
stiles watson
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low point drains.

On my 2003 Big Sky 3670RL, I have 3 low point drains. One is off by itself, about 2' inward, street side, near the front axle. The other 2 are about 1' inward from the street side, very near the bracket holding the waste water drain pipe. I think the one off to itself is the main fresh water system drain. What do the other 2 lines drain?

I am installing some valving and piping to bring the low point drains to a more functional location, a location more convenient than crawling under the coach and getting drowned.

I know that some of you have made this type modification but did you modify all 3 drains?

 
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Old 07-11-2007, 05:05 PM   #2
RC and Samantha
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Stiles I believe they are the hot and cold water line drains. You're correct on the fresh water low point drain being by itself.

We did not modify their location but we did bring them up into the under belly to help prevent freezing when we winter camp and added valves. I'll be interested in seeing your mod as climbing under is really a drag.

Patty
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Old 07-11-2007, 05:47 PM   #3
exav8tr
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Stiles, those other two lines drain your hot and cold water from their respective lines when it is time to winterize or sanitize your water system.
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Old 07-12-2007, 03:31 PM   #4
kdeiss
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I put shut off valves on all 3. On the fresh water tank I added a fitting to connect a garden hose.
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Old 07-12-2007, 03:52 PM   #5
sreigle
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On our prior Montana I put a valve only on the single one, the drain for the freshwater tank. As other said, the other two are low point drains. They are situated at the low point in their respective lines, as their names imply. When winterizing you can drain those and in theory that drains all the water in the lines. In reality, there will still be pockets and drops of water here and there that eventually will get together and migrate to the low point drains. If you are using antifreeze to winterize you may decide not to drain at the low point drains but just to run the antifreeze through the system, pushing the water out the faucets.
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Old 07-12-2007, 04:24 PM   #6
RC and Samantha
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Quote:
quote:Originally posted by sreigle

On our prior Montana I put a valve only on the single one, the drain for the freshwater tank. As other said, the other two are low point drains. They are situated at the low point in their respective lines, as their names imply. When winterizing you can drain those and in theory that drains all the water in the lines. In reality, there will still be pockets and drops of water here and there that eventually will get together and migrate to the low point drains. If you are using antifreeze to winterize you may decide not to drain at the low point drains but just to run the antifreeze through the system, pushing the water out the faucets.
Steve we did that last year and busted one of our low point drain valves we put in. It froze up. In years prior to this we always opened them up but I forgot! I winterized this past winter myself.

Patty
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