Sewer hook-up

[rasberry]

I have a 1977 argosy trailior. The sewer outlet is about 1/4"-1/2" too big to fit the standard 3" sewer hose. Any suggestions for an adapter. The RV store I tried checked several cataloges and din't seem to find anything. Help the holding tank is filling fast.

[Dan@LED4RV]

I'm not 100% sure what you are talking about but it sounds like a classic problem. Google 89-8295 and see it that will help.

[aluminauts]

I wonder if this would be what helps:
T05-2285VP Universal Adapter 3 Inch Thetford Hooks X 3 Inch Standard Bay Lugs Camper Trailer RV

we got it thru American RV Company to let our Thetford adapt to a newly purchased sewer hose.

[68 TWind]

Vintage Trailer supply has Thedford-Valterra adaptor.
This may be what you need: Thetford to Valterra Adapter

[Lumatic]

Yup. sounds like you got a Thetford. Ditto on the adapter. I glued mine on.

[AWCHIEF]

$7.10 from Amazon: Amazon.com: Valterra T05-2285VP Thetford to Valterra Universal Adapter: Automotive