I need a type B gas vent connector "Y" for a gas furnace and gas hot water heater. The model number on the unit is DuraVent 5 DU Y34. Is that model still available or can I get the appropriate replacement?

Per DuraVent, you can use this piece .

Is there a DuraVent 4-inch to 5-inch inner diameter class B adapter available?

Yes, it is located here: increaser .

DuraVent Chimney Products

Customer Q&A with Product Specialists

Barb from Southern Maryland asked:

Do you sell an adapter to connect Duravent double wall stove pipe to single wall pipe ?

No, if you are using the DuraVent DVL double-wall black stovepipe, that pipe is not intended to be combined with single-wall pipe.

Answered by: Tyler M. - NFI Master Hearth Professional on Dec 13, 2023

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Leonard H. from Kennewick, WA asked:

I currently have a Blaze King wood stove venting up through an 8" triple wall pipe that contains a 12' dogleg in the attic. I would like to convert it to a pellet stove that has a 3" exhaust pipe. Should I get an adapter at the ceiling that goes from 3 to

You will need to consult the installation manual for the pellet stove that you are looking to replace your wood-burning stove with. The venting requirements differ for every appliance and will be found in the installation manual.

Answered by: Aaron D.

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Phil from Mill Valley, Ca asked:

How do I connect a single wall flue vent pipe from my water heater to a Type B (double-walled) vent pipe, which passes through a steel fire stop plate and my garage wall to connect with an external single wall flue vent pipe that goes up the side of my ho

Most appliances such as your water heater require a continuous connection of double-wall type B gas vent from the unit's flue collar to the termination. Please consult your installation manual for reference.

Answered by: Tyler M. - NFI Master Hearth Professional

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Ronald M. from derry nh asked:

If I have a 6" coming out of my wood furnace, should I keep 6" to the top or go to 8"?

We strongly recommend keeping the 6" diameter for the entire chimney.

Answered by: Tyler M. - NFI Master Hearth Professional

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