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Old 12-30-2014, 11:56 PM   #1
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1971 31' Sovereign
1973 29' Ambassador
Palm Desert , California
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Water valves and underbelly tubes

I have the service manual for a '72 but it doesn't go into detail about what the water valves do in the different locations. It also doesn't say where all the tubes exiting the bottom come from.

Has anyone made a list somewhere I haven't found yet? I have 3 under the galley, one by the hot water heater in the cabinet and 2 or three in the rear by the battery.

For example, looking under the trailer today on the curb side, midway just under the wrap, I saw a rubber hose that was disintegrating. I have no idea where it comes/goes or what it does.

Thanks. Any help is appreciated.
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Old 12-31-2014, 07:41 AM   #2
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Greetings CraigCA!

Welcome to the world of Vintage Airstream ownership!

The valves that you are seeing on the water supply lines are likely low point drains that are utilized when winterizing -- there likely will be one for the hot water lline, cold water line, and water filter line below the kitchen sink. The. Rear compartment likely has hot. And cold low point drains for the sink and bathtub as well as one for the toilet line. You will also likely find one or two low point drains near the water heater. You will also likely find drain tubes through the belly pan for the air conditioner condensate drain and a drain tube for the fresh water tank.

Good luck with your Airstream.

Kevin
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Old 12-31-2014, 11:00 AM   #3
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1971 31' Sovereign
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Ahh. I was thinking the one near the hot water was for the toilet but maybe the one for the toilet is in the rear compartment. Sometimes the copper lines disappear under the floor or behind a wall so they can't be followed.

Here is a picture of the underside with the rubber hoses that are falling apart. I'm not sure if they are there to protect the line as it enters the AS or if they actually carry something.

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Old 12-31-2014, 02:01 PM   #4
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Greetings CraigCA!

Sometimes, Airstream used rubber hoses to protect the metal propane lines from road debris -- this has been discussed on the Forums in the past, but it doesn't seem to apply to all trailers or all years (I don't believe that my Over lander or Minuet came with these protective covers).

Good luck with your investigations!

Kevin
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1964 Overlander International/1999 GMC K2500 Suburban (7400 VORTEC/4.11 Differentials)
1978 Argosy Minuet 6.0 Metre/1975 Cadillac Eldorado Convertible (8.2 Liter V8/2.70 Final Drive)
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Old 12-31-2014, 03:19 PM   #5
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1971 31' Sovereign
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That's what I thought too.
Do all the LP gas lines run under the underbelly skin?
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Old 01-01-2015, 11:56 AM   #6
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The propane trunk is under the bottom of the trailer. It branches, goes up to the appliance where the individual line shut offs are located.
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Old 01-01-2015, 06:38 PM   #7
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1976 31' Sovereign
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Keep up with pictures. Very helpful. Just bought a '76 Sovereign this summer. Jim&Teach.
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Old 01-03-2015, 11:21 PM   #8
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jimmbob-Did you buy the owners and service manuals?
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