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Old 05-20-2012, 03:16 PM   #1
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1973 25' Tradewind
Boulder , Colorado
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trouble hooking up waste water outlet to sewer hose

I'm having a hard time hooking up my sewer hose connection to my '73 Tradewind wastewater outlet--the parts look they should fit, but are slightly off to the point where the hose does not seal properly onto the trailer's outlet connection. Am I missing something?

Thanks in advance!!
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Old 05-20-2012, 03:23 PM   #2
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Brunswick , Georgia
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My 82 has a 2 prong connection at the waste pipe. The sewer hoses are typically 4 prong. If this is the case, airstream (and others) sell an adapter that will connect the two. That is how mine works....
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Old 05-20-2012, 03:29 PM   #3
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Dewey , Arizona
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Older Airstreams used Thetford fittings which are very close to the more common Valdera fittings.
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Old 05-20-2012, 03:36 PM   #4
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Quote:
Originally Posted by azflycaster
Older Airstreams used Thetford fittings which are very close to the more common Valdera fittings.
I think that is the 2/4 prong difference. (I couldnt think of the names) the Thetford/Valdera adapter will solve the problem. They are not expensive....I would buy two.
I had one of these adapters break mid dump....it was a beautiful mess!
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Old 05-20-2012, 03:47 PM   #5
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And original Thetford fittings are available at larger RV parts places and AS dealers and Inland RV etc. They are not cheap, but last a long time with some moderate care.
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Old 05-20-2012, 04:02 PM   #6
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Vintage Trailer Supply has Valterra/Thedford adaptors. All the modern hoses you buy have the Valterra type fittings. Just put the adaptor on the outlet valve of the trailer and you will be good to go (no pun intended). I did not have any luck finding them at Camping World.
Thetford to Valterra Adapter
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Old 05-20-2012, 04:15 PM   #7
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The gasket may be shot. What color is the fitting you are trying to connect to the trailer. If it is white it's probably Thetford. Measure the outside diameter of the waste pipe where you connect the hose. Let us know what the measurement is.
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Old 05-20-2012, 04:18 PM   #8
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If the bayonet fitting locks onto the pipe and it leaks. It's the gasket, look inside the end of the fitting and see if maybe the gasket is missing.
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Old 05-20-2012, 11:23 PM   #9
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Thanks for all of the helpful responses! I was using a what I know undersand is a 4-prong Valtera adapter to hook onto the 2-prong Thetford outlet on the trailer. This clearly did not work well. I can chalk this one up to ignorance rather than incompetence.
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Old 05-21-2012, 07:38 AM   #10
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I got mine from Amazon:

Amazon.com: Valterra T05-2285VP Thetford to Valterra Universal Adapter: Automotive

Also very handy:

Amazon.com: Valterra T1023 90 Clearview Adapter: Automotive
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