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Old 11-03-2014, 12:14 PM   #91
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Dave - I think you are correct that the pump would stop the flow back out. Plus I think the city part of the line would not drain. My thinking on his eliminating it is that it isn't a reliable method by itself anymore due to the new toilet valve?
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Old 11-03-2014, 02:27 PM   #92
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Dave - I think you are correct that the pump would stop the flow back out.
I agree. The pump has a check valve, so the freshwater tank drain (or any point between the tank and the pump) is not an effective low point drain for the rest of the system.
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Old 11-03-2014, 02:58 PM   #93
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If the lines freely drained back to fresh tank, there would not be water in the lines except when the tank is full but there IS water in the lines.

So I guess you would have to displace it when pumping the anti-freeze through. At least, I hope that would be the case and that the anti-freeze would not just mix with the water, leaving a lot of water in there.
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Old 11-03-2014, 03:27 PM   #94
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Was this possibly Reace's reasoning in eliminating the separate low point drains from the Escape?
I believe the low point drain was eliminated because it could not be depended on to totally drain all water from the system. The toilet valve still trapped enough water to freeze and do damage to it. We have the low point drain and after draining with all taps and toilet valve open I still get a slug of water out of the toilet valve when I pressurize the system with air. The current ETI winterizing procedure ensures that the toilet valve will survive the winter.
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Old 11-03-2014, 06:22 PM   #95
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There is nothing wrong with having a low-point drain but plenty wrong with not having it. The problem was the directions not saying to pump anti-freeze through the lines which will cover the toilet valve, but instead saying to just dump anti-freeze various places --- which does not cover the valve. No interest here in blowing out lines unnecessarily if pumping anti-freeze covers everything.
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Old 11-03-2014, 06:52 PM   #96
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If the lines freely drained back to fresh tank, there would not be water in the lines except when the tank is full but there IS water in the lines.

So I guess you would have to displace it when pumping the anti-freeze through. At least, I hope that would be the case and that the anti-freeze would not just mix with the water, leaving a lot of water in there.
It seems reasonable to me to assume that you would drain the freshwater tank - and thus the line from it to the pump, before either blowing out the lines or adding antifreeze.
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Old 11-03-2014, 07:38 PM   #97
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It may seem reasonable that the line would drain when fresh tank is drained but we just did it and that is not the case. We had a great deal more water out of the low-point drain following emptying fresh.
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Old 11-03-2014, 08:02 PM   #98
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It may seem reasonable that the line would drain when fresh tank is drained but we just did it and that is not the case. We had a great deal more water out of the low-point drain following emptying fresh.
The line from the tank to the pump will drain with the tank; the lines after the pump will still hold water, which will come out of the low-point drain. The separation of these two parts of the system is due to that check valve:
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The pump has a check valve, so the freshwater tank drain (or any point between the tank and the pump) is not an effective low point drain for the rest of the system.
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Old 11-03-2014, 09:03 PM   #99
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In other words, the lines are still full of water without a low-point drain. Does not matter where the water is that is still there. We want a low-point drain for the rest of it and situations mentions above by others. Can't understand getting rid of it.
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Old 11-03-2014, 09:12 PM   #100
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As has been said, it was eliminated because with the new toilet valve, the low-point drain wouldn't remove all the water. One had to use compressed air or RV anti-freeze, so there is no point installing something that doesn't do a complete job.
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