Totally get it and agree. It's just the low spots or loops in places with poor access that give me the creeps as Dennis mentioned above.
Sky already mentioned but... the city water line and the "pump" water line are one in the same. They are all connected. The only place where this differs is between the tank and the pump. But after the pump, everything is all the same - it's all just one big water line conencted together.
First thing I do on winterizing day is hook up the inflator and make a round opening faucets until there is no water coming out. Then I let it sit until later in the day, make another round and always get a significant amount of water; it mystifies me where it is hiding. I'm not sure a more robust air source would make a difference but maybe it would do a better job of getting the water out on the first pass. It also occurs to me that running pink might not be solving the problem of water "hiding" somewhere in the system. I'm OK with my process and am confident I've gotten all the water out by the end of the day (unless I forget the windshield washers).
Just to clarify, my pump is mounted on the water heater and then goes to a manifold, but the city water line I’m referring to goes to transom locker to the inlet, and then into the manifold.
My city water inlet is right next to the transom shower off a short tee into the line that feeds that shower. So, sending pink through that line and out the shower should get most if not all of the water out of the line. I suppose there might be some left in the tee.Just to clarify, my pump is mounted on the water heater and then goes to a manifold, but the city water line I’m referring to goes to transom locker to the inlet, and then into the manifold.
So I guess my question is, when you add antifreeze, let’s say to the in-feed line of the pump, you now start opening faucets to get the water to be “pushed out” by the antifreeze. But, the city water inlet has a regulator on it and a check valve so no water exits the fitting. Isn’t there water, not antifreeze in that line leading up to the water hose inlet fitting? Are you saying that the antifreeze dilutes this water or actually mixes enough to escape the transom shower when that valve is opened? I do realize you are thinking “Mark is a typical engineer, alway over thinking”
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Believe me, I get it! I started my schooling in a mechanical engineering program before switching majors. But, yes, I can completely understand why you're asking for further explanationJust to clarify, my pump is mounted on the water heater and then goes to a manifold, but the city water line I’m referring to goes to transom locker to the inlet, and then into the manifold.
So I guess my question is, when you add antifreeze, let’s say to the in-feed line of the pump, you now start opening faucets to get the water to be “pushed out” by the antifreeze. But, the city water inlet has a regulator on it and a check valve so no water exits the fitting. Isn’t there water, not antifreeze in that line leading up to the water hose inlet fitting? Are you saying that the antifreeze dilutes this water or actually mixes enough to escape the transom shower when that valve is opened? I do realize you are thinking “Mark is a typical engineer, alway over thinking”
No problem, at all!
Like this spot in the plumbing on my RV. It’s actually a “trap” formed by a line that runs from the city water hook up to the tank fill. Any residual water left in the lines will settle there at that low coupling, at least in my opinion. Advantage of the rv is that I can see every bit of water line that runs in it, I can’t in my boat. So I use pink in both. Others do not and do ok. Not a risk I want to take. Just me.
Lazy - you have the patience of a saint when dealing with me. Thanks for the great detail. It makes perfect sense. In my mind I overlooked that the transom wash down was connected so closely to the city inlet. I will buy beers and shots when we get the opportunity to meet!Believe me, I get it! I started my schooling in a mechanical engineering program before switching majors. But, yes, I can completely understand why you're asking for further explanation
Yes, the city water line you're referring to is connected with the all of the rest of the lines (after the fresh water pump). In other words, your fresh water pump will ALSO send water to the transom locker washdown.
But, to better answer your question... let's pretend we're stepping onto the boat to start this process. After/during running the fresh water tank dry, one would have gone around to each faucet and opened them up till water no longer comes out. At the the transom locker, you would do the same thing with the washdown. At this point, the city water input would have drained down, too. Once you start charging the system with AF, you would again open all valves to prove there is pink everywhere. IF there happened to be a bit of water still lying in the line behind the regulator (unlikely), it would be a miniscule amount which, first, would not be "filling" the line so there is no way it would cause any damage because there is plenty of space for it expand to... and second, the AF being pushed into that line would completely dilute the tiny bit of water still there.
The "not be filling the line" part of what I said... to further explain... first, imagine holding (horizontally) a straight piece of hose line that is filled with water. If you then open one end so it drains, most of that water (if not all) is going to drain out. There could be a few small puddles of water that remain due to the friction between the water and the line. Now, put that line in the freezer. Yes, the remaining water will freeze, but it is not trapped in any way - there is plenty of space for that water to expand and in no way will it expand AGAINST the wall of the water line. This is also why the fresh water tank doesn't crack after you run it dry - there is always a little water that remains in it - maybe an inch or so of water. But when the water freezes, it will push UPWARDS because of there is plenty of space for it to go, rather than pushing against the sidewalls. Well, it will push against the sidewalls a small amount, but not with anywhere near enough force to crack the tank - the brunt of the expanding force is directed upwards into free space.
Nah, I just really enjoy this stuff! But I'll take the compliment... and the beer/shots!
