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Choosing the Correct Replacement 3" and 1-1/2" Waste Valves for a 2000 Forest River Sierra  

Updated 11/04/2024 | Published 10/30/2024

Question:

I have a 2000 sierra travel trailer by forrester I need new dump valves for the sewage for 3x1.5inch will the double RV waste Valves T18 fit thx

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Expert Reply:

Hey Tom!

The Double RV Waste Valves # T18 will fit as long as your current waste valves have the hub connections. The difference between a hub connection and a spigot connection is that the hub is larger and accepts the spigot end.

If your current waste valves have spigot ends then you need the kit # T18B instead.

Feel free to send me some photos of what you have if you aren't 100% sure.

expert reply by:
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Jon G
Tom profile picture

Tom

10/30/2024

My disconnects were ripped off when a tire blew so I would be starting fresh from a straight pipe out of the sewage tank

Jon G. profile picture

Jon G.

11/4/2024

@Tom In that case, the outer diameter of your pipes are likely the 3" and 1-1/2" so you'll need the hub kit that fits over them.

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