Where to find double wall stainless steel flue pipe

Alan(CaliforniaRadiant)Forbes

flue pipe:

http://www.protechinfo.com/fasnseal.html

I believe double-wall is 1" clearance to combustables; expensive stuff.

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Joe_52

Re: where to find double wall ss flue pipe 0\" to combustibles

Could anyone tell me where to find 4" double or triple wall stainless steel flue pipe with a zero clearance to combustibles for use on a tankless water heater

Thanks in advance for the help

hr

Big bucks stuff

I priced some Metalfab stuff a while ago. About $1400.00 for 30 feet and a handful of fittings!

hot rod

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S Ebels

I've used

Selkirk and Security Chimney stuff. I liked the Security (CT series?) a lot. Good fit on the joints and good associated hardware. They make it in single wall and double wall. I don't know if you'll find any zero clearance though.

And Yes, like Hot ROd says, it is big bucks!

Bob Harper

confused terms?

If you have a power vented appliance, you cannot vent into regular UL 103 or 103HT factory chimney. You would need special vent such as AL29-4C stainless listed for such use. FYI, factory chimney generally carries a 2" clearance to combustibles among other rules. Generally, the mfrs lised instructions will specify a brand(s) of pipe suitable for use with that system. The appliance mfr would also state the clearances to this single walled pipe.

Follow the instructions!

Alan(OnVacationInOregon)Forbes

High price of flue material

is one of the reasons I may switch to Noritz; seems to be proprietary flue fittings and pipe at half the price. I don't remember seeing double-wall pipe, though.

Weezbo

Spendy L-Vent,has 1\" clearance,Triple wall

was something around in the 60's and i recall buying some of the last of it in the early 70's.

Plumdog_2

Can you use regular stainless and sleeve it?

I have installed the single wall stainless thru a sleeve of B vent to achieve 1" clearance to combustibles and the inspectors seem to like it alright. It doesn't add much expense for materials. I used site-fabbed spacers to hold the two pipes in alignment with even spacing.