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Old 09-22-2015, 07:41 PM   #1
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1978 31' Excella 500
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1978 Excella 500 31' freshwater system - what are these two things?

Hey guys

I have attached a photo of the freshwater system located in the closet of my centre bath model 31' Excella. Can someone explain to me what everything is. I know the red tap is to drain the freshwater tank, the water filter is to the left of that, then the water pump. But there is 1) a line coming up from the floor with a female flare fitting. I do not know what this is for. And then 2) there is a blue tap shutoff which i would assume is the shutoff for the city water. But i have it closed while city water is connected to the connection by the dump valves. And i still have water. So maybe the shutoff is for the 50' hose connection option found by the power cord? Sorry the photo is blurred and i had to piece two photos together. I know the two copper lines going left off of the pic go the the 50' hose, and the city water connection by the dump valves.

Any help would be appreciated. I hate not knowing what everything is.

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Old 09-22-2015, 10:42 PM   #2
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I have a 79 center bath and as you said the red valve will drain the tank when the pump is running. I also open this valve to drain any water remaining in the lines after being connected to city water (i.e. Remaining water in line that feeds kitchen, water in line after city inlet). However, you mentioned having two city water inlets, so your setup sounds different. I only have one at the rear of the trailer close to the dump valves. Where are yours?

Worth noting too is that I often have to open the red valve to let air out when using the water pump. So if using the pump and you have little or no water flow at the faucets, give that valve a quick open and close to get things flowing.

The blue valve as you said is simply a shutoff for city water.

I don't see the flare fitting in your pic. Perhaps you can circle it.
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Old 09-22-2015, 10:47 PM   #3
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1978 Excella 500 31' freshwater system - what are these two things?

Looking at your photo again it is odd that there appears to be two incoming water lines--one with the blue valve, and another with what appears to be a pressure regulator or maybe a check valve. Not sure of the the rationale for this, or what the benefit might be.

Do the lines tie together just before the water pump?
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Old 09-23-2015, 10:54 AM   #4
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Thanks for the reply. I have the city hookup beside the dump valves same as you, or I can hookup using the built in 50' coiled spring loaded water hose located right beside my spring loaded power cord. Those are located in the back of the curb side. Just behind the dump valves. The first water leak i had was the connection that goes from that hose to the copper tubing. So I had to remove the floor panel of my outdoor/indoor storage between the two to find that connection. If you follow the copper pipe right, from the blue tap, look where it meets the vertical copper pipe, That is where the flare fitting is.
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Old 09-23-2015, 10:58 AM   #5
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Quote:
Originally Posted by KYAirstream View Post
Looking at your photo again it is odd that there appears to be two incoming water lines--one with the blue valve, and another with what appears to be a pressure regulator or maybe a check valve. Not sure of the the rationale for this, or what the benefit might be.

Do the lines tie together just before the water pump?


Yes. One line goes to the city hookup by the dump valves, and the other goes to the 50' hose. Which makes that blue shutoff confuse me even more. I guess it is so water cant go to the hose when connected to city water by the dump valve connection?
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Old 09-23-2015, 01:29 PM   #6
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What photos?? I don't see any photos.

Tom
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Old 09-23-2015, 05:35 PM   #7
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1978 Excella 500 31' freshwater system - what are these two things?

Quote:
Originally Posted by Jcashcollect View Post
Yes. One line goes to the city hookup by the dump valves, and the other goes to the 50' hose. Which makes that blue shutoff confuse me even more. I guess it is so water cant go to the hose when connected to city water by the dump valve connection?

At one point the line with the blue valve was probably the only one, so the shutoff served a purpose. Do you have a pic of this other spring coiled hose and power cord?
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Old 09-23-2015, 05:38 PM   #8
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I imagine that flair fitting is part of the original setup before someone added that spring coiled hose.
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Old 09-23-2015, 11:25 PM   #9
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The spring loaded power cord and water hose are factory, it mentions them in the manual. I will take some better pics this weekend. I have to empty the very full closet first. For now i attached a pic that shows the left side so you can see where the two copper lines connect, and a close up of the flare fitting. Click image for larger version

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Old 09-23-2015, 11:37 PM   #10
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Found a bad photo of the compartment that has the power cord and water hose. It is the open door in the back. In the floor of the outside storage to the left of it is where the hose connects to the copper. And the dump valves and other city water connection are right below the outside storage door. Again, i will post good pics this weekend. Click image for larger version

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Thanks for the replies.
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Old 09-24-2015, 12:18 AM   #11
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1978 Excella 500 31' freshwater system - what are these two things?

My 77 Excella has 2 city water inlet connections. The normal one in the usual location and the 50' hose reel is the 2nd much more convenient one. My father was told by the dealer when he bought the trailer new that the hose was only for hooking up to another trailer while at rallies and therefore never used it. Now that I have the manuals and own the trailer, I use the hose exclusively to connect to city water. I have a rear bath and no valve with blue handle. All my valves are red handled and in the rear hatch.

Both inlet connections should join the main line pipe before it reaches the pressure regulator. I'd try connecting the hose reel to fresh water and see what happens when you open that blue handled valve.

One of the pictures clearly shows that the line with the blue valve comes off the main line. The connections in my Excella with those female flare fittings are the faucets and the ever pure built in water filter system. I had to disconnect my water filter because it started leaking and I had to buy a flared plug to cap the line. I later bought a flared union and bent the copper tubing to route it directly to the dispenser. The ever pure filter is not needed as I use an external filter at the spigot outside.

If your kitchen sink doesn't have the purified water dispenser or it's not connected, that could be what that pipe and valve is for? Regardless I would buy a flared plug to insure that line is capped. I would guess if you turn on that blue valve with pressurized lines you will get water coming out of it.
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Old 09-25-2015, 07:18 AM   #12
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So is this second hose stored above the floor, or between the floor and belly pan? Sounds like an interesting idea. And a spring coiled power cord is there as well? What does your manual say about these two distinct water inlets? Pics would be great.
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Old 09-25-2015, 08:24 PM   #13
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The hose reel is bolted to the plywood floor and can be accessed under a bed or closet. It has a plastic cover that sits over both reels.
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Old 09-25-2015, 09:45 PM   #14
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Ok. Here are some new pics. I think i have a grasp on most of it. FYI i have the water filter working and all plumbing on that side of the trailer has been upgraded. I added pics of the outside you can see the hose and reel. I added new pics in the closet. Looking at it again i think one line from the left is fom the reg city hookup, and the other is from the hose. In my manual it says there should be two drain valves, so i guess if you opened the blue and turned the pump on it would drain out the hose. Unfortunately at the moment i have it capped off just to the left so it isnt connected to the hose. But the line to right of the blue tap goes into floor and goes... where? i thought that might feed the water heater on the other side of the trailer, but now i think the line to the right of the red tap does that. There is no water in that part of the trailer, so it must 90 over to the street side. And then i added a new closeup of the flare fitting. No idea. But by the looks of the burn marks i see the PO did some soldering and probably replace the pump. Thanks for the help guys getting ready to live in this thing all winter and dont want any surprises. Click image for larger version

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