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Old 11-26-2012, 05:53 AM   #1
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1986 34' Limited
1966 24' Tradewind
Conifer , Colorado
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Posts: 3,122
Plumbing Diagrams

We are installing a new bathroom sink faucet. My Airstream was plumbed in PB plastic tube and fittings with crimp rings. It appears the factory plumbed from the faucet backwards. All connections are crimped rings, no threaded unions to split things apart.

So I will be doing quite a bit of re-plumbing to get a new faucet installed.

Does anyone have a plumbing diagram for an 86 34 Limited side bath? There are three lines from the city water inlet. One by passes the water filter and continues on behind the shower and down under the floor. One is cold water coming back to fill the water heater. And I have my hot water line the feeds the sink, shower, and under the floor to the galley. There is a misterious tee and elbow just after the pressure regulator that goes down under the floor at the water heater area. And there is a line that by passed the filter, goes behind the shower pan, and then goes down under the floor.

I wonder if this is the line that goes over to the 12v pump?

A plumbing diagram would be helpful so I don't get my lines crossed.

Thanks,

David
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Old 11-27-2012, 05:06 AM   #2
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1986 34' Limited
1966 24' Tradewind
Conifer , Colorado
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Clarification

" There are three lines from the city water inlet. One by passes the water filter and continues on behind the shower and down under the floor. One is cold water coming back to fill the water heater. And I have my hot water line the feeds the sink, shower, and under the floor to the galley. There is a misterious tee and elbow just after the pressure regulator that goes down under the floor at the water heater area. And there is a line that by passed the filter, goes behind the shower pan, and then goes down under the floor. "


I need to clarify my description I posted in my first post above after I have studied the plumbing system some more.

From the city water inlet, city water runs in through the pressure regulator valve, and then into the bathroom. There it tees feeding the water filter and connecting with what I think is the 12v pump line feed. After the filter, this cold water line supplies the bathroom cold water, feeds the water heater, and goes on to the kitchen faucet.

My unknown line is this city water feed line has a tee right after the water regulator valve that runs a line under the floor. I do not know what this line does. And it appears the 12v pump pressure line tees into the city line so you can pressurize the system with either city water, or 12v pump water. I assume city water pressure will go all the way back to the 12v pump. I assume the pressure regulator acts as a "foot valve" preventing 12v pump water from escaping out the city water connection point.

Does anyone know where I can get a plumbing diagram that shows the whole fresh water circuit?

Thanks,

David
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Old 12-01-2012, 07:09 PM   #3
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1986 34' Limited
1966 24' Tradewind
Conifer , Colorado
Join Date: Jun 2009
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Mystery Line Solved

Okay. The mystery water line running under the floor after the water pressure regulator valve is simply a system drain! It goes no where except through the floor and belly pan to the ground.

I removed the water heater today as part of my re-plumbing project. Then I could see things better. It apprears Airstream provided a plastic ball valve and a drain line to the ground. This would make winterizing easier had I realized it was there! The ball valve is located under the bed, and under the storage tray under the bed. Not the most convenient thing in the world.

Anyway, I can now continue with my plumbing as I think I now know where all the lines go. Live and learn.

David
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