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Old 08-08-2016, 11:49 AM   #1
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1977 Argosy 24
Gilbert , Arizona
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City Water Connection

On a 77 24' Argosy, does the city water connection at the rear left have a check valve that stops the water coming out while using the water tank and pump?


1977 24ft Argosy - sold.
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Old 08-08-2016, 04:01 PM   #2
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I think it does. It'll either be right near the pressure regulator, or may even be a component part of the regulator itself. My pressure regulator had a check valve incorporated into it.
As long as you keep the inlet valve on the exterior closed it shouldn't matter either way.

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Old 08-08-2016, 06:05 PM   #3
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You can find out easy enough by just turning on your 12v water pump and then looking around outside the trailer for water coming out somewhere. Listen for your pump to stop when it reaches its pressure setting.

Almost all Airstreams have a check valve to prevent water from exiting the city water line when using the pump. Many regulators won't allow back flow thus acting like a check valve. Many 12v pumps won't allow back flow so you won't fill your fresh water tank while on city water.

But since your trailer has two "pressure sources"; city water and 12v water pump, you need to isolate them with a check valve of some sorts so it's "either city water OR 12v pump".

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Old 08-08-2016, 06:17 PM   #4
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If original the check valve for the city water is part of the city water connector. If there is a screen, take it out and you will see the shaft of the check valve.
If there is none just cap it off when using the pump. You should however keep the screen in place. Especially if you don't use some kind of filter for city water.
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