Replacement Waste Valve with Bayonet End and 3" Hub End

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Question:

Hi, Looking for a gate valve that is 3 bayonette 3 id, 3.5 od and 3 slip on the other side 3 id, 3.5 od

asked by: Steve S

0

Expert Reply:

Hey Steve, thanks for the photos!

The Bristol Waste Valve for RV Black Water Tank - 3" Hub to 3" Lug # 34466N5A will definitely fit in place of your current valve, but it comes with 4 lugs instead of the 3 that you said you have.

From the photos you sent in you should be able to use this 4-lug system, but if not, the Valterra Bladex Waste Valve Body # T1003VPM will sandwich between the ends that you currently have so you can just reuse them.

expert reply by: Jon G

0

Bayonet Opening on Waste Valve
(click to enlarge)

Side Profile of RV Waste Valve
(click to enlarge)

Jon G.

11/3/2025

Hey Steve, how did things go with the Bristol waste valve for your RV tank? Did the 4-lug setup end up fitting your system, or did you go with the Valterra Bladex valve instead? Your update could make it easier for others working on a similar connection.

Steve S.

11/10/2025

@JonG I ended up with a T50A Valterra Waste Valve for RV Black Water Tank - 3" Spigot to 3" Lug

Gwendolyn Y.

11/10/2025

@SteveS I'm glad you were able to find something that worked for your set up, Steve!

Answer 1

We do have a 3 inch diameter black water waste valve with a handle that unscrews but part #T1003VPM doesn't have a removable handle. Instead use part #34439240 from LaSalle Bristol. Additionally, use part #34466SP1112 for a 12 inch extension.

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Answer 2

Yes, Bristol is a manufacture not a specific type of fitting. As long as the opening diameter and fitting type is the same then you can use one with the other. The Valterra Waste Valve item #T58 you were looking at is a straight pull manual valve…

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Answer 3

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Answer 4

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Answer 5

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Answer 6

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Answer 7

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Answer 8

What you can do is hook the Valterra Eccentric Tank Reducer - RV Gray Water - 3" Spigot to 1-1/2" Hub Item #T1041-1 onto your 1-1/2" pipe using some Valterra ABS Solvent Cement - 1/4 Pint Item #A05-0303 and a hose clamp. Next…

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Answer 9

I attached a picture that shows what the typical dual tank setup looks like with the accessories needed labeled. First thing you need is pig tails to go from the tanks to the regulator like the part #100473-12. Then for a dual tank regulator with…

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Answer 10

Hey Josh thanks for all of those pictures. After looking at them I can say both the LaSalle Bristol Waste Valve Body for RV Gray Water w/ Coupler #34439241 for your grey tank and #34466N4BB for your black tank is going to work perfect as a…

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Replacement Waste Valve with Bayonet End and 3" Hub End

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