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Old 06-21-2007, 07:28 AM   #1
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1976 24' Argosy 24
Milford , New Jersey
Join Date: Jul 2006
Posts: 285
Thetford Valves, Repair or replace?

Hello all. 76 Argosy 24' rear bath. Well i dropped the rear of the belly pan to find a shower leak, and discovered that the P- trap had cracked. So I think i found my leak. But I also noticed that i have a hanging drop of water on the outside of my graywater valve. No drip per say, just wet. Thought I should address this while she's opened up. Any thoughts on rebuilding the old valves vs replacing them? The hard part about replacing them seems to be that the factory glued the valve to the 4" outlet pipe! So replacement will mean making all new 4" outlets. Has anyone had good luck rebuilding the valves?Thanks, George.

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Old 06-21-2007, 07:39 AM   #2
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1973 Argosy 20
Lorain County , Ohio
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You may poke your nose into the idea of cleaning the valve first. Perhaps it's gummed up and will not close completely. Some have had success by fabricating a scratch tool to scrape out the valve guide slots. A forums search will produce better advice...

Good luck,


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Old 06-21-2007, 09:40 AM   #3
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Originally Posted by Gkiesel
Has anyone had good luck rebuilding the valves?Thanks, George.
George, yes, as described here, using the repair kit is straightforward:

If the internal surface of the valve is scratched, complete renewal of the valve would be preferable, IMHO. With plenty of time, I would opt for complete replacement. However, my Airstream manual states that the Airstream factory just uses repair kits.
Nick Crowhurst, Excella 25 1988, Dodge Ram 2500 Cummins Diesel. England in summer, USA in winter.
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Old 06-21-2007, 12:41 PM   #4
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1976 24' Argosy 24
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Thank you Nick. Rebuild it I say!
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