304 S/S Liner Question

[Apiator]

Hey y'all,

Just ordered the Avalon Olympic insert. The sales rep said that they sell a 25' flex liner kit made of 304 Stainless Steel ($385). Is this a good grade and how does it differ from the 316ti liner? If it's not up to par, then I may get the liner elsewhere.

Also...anyone know of some good places to get rock wool?

Thanks.

 

[ponyboync]

I've been shopping around for a liner too. I think the 316ti is better. I'm trying to decide between Rockford and Flex King.

 

[Wet1]

316 is better. Contact Magnaflex here on the board.

 

[ponyboync]

I just did some checking and it looks like 304 is more expensive. Does that mean it's better?

 

[BrotherBart]

304L is fine for wood burning and is the stainless used in a lot of rigid liner and chimney pipe. In fact it is the inner layer of most of the expensive "double wall" flex liner on the market. And most stainless elbows, top plates and chimney caps are made of 304L as is that famous baffle in Pacific Energy stoves.

 

[Wet1]

304 should only be used for chimneys venting a wood burning appliance. 304 is commonly found in rigid chimney liners.

316ti is made by adding molybdenum and titanium to 304-alloy. This allows it to resist acids and the stresses of hot and cold cycles and makes it lighter in weight. It can be used with solid fuels (wood, coal and pellet), gas and oil. It can withstand temperatures up to 2100 degrees. I'd go with 316ti for the durability and versatility.

 

[Hogwildz]

Your wasting the added cost on the 316. For wood burning, 304 is more than enough and will most likely outlast you.
If your just dying to spend money, than by all means go with the 316.

 

[madrone]

Your wasting the added cost on the 316. For wood burning, 304 is more than enough and will most likely outlast you.
If your just dying to spend money, than by all means go with the 316.

seriously. Good grief. You won't be around long enough to know the difference.

 

[theheatelement]

All of our liners are 316ti... It all depends on how the manufacture UL tests, most 304's on the market are tested to 1 inch clearance or 0 in clearance with insulation whereas are liners are certified with 0 clearance without insulation... One thing I would make sure of is that its not straight 304 or 316 but that is must be 304L or 316L. That in itself is very important

 

[Hogwildz]

My duraliner is rated 0 clearance

 

[theheatelement]

Not without insulation.... their aren't many liners out their that are rated to 0 clearance.. and duraliner is not one of them... Check the link below.

My duraliner is rated 0 clearance

(broken link removed to http://www.duravent.com/sdv%20newsletters/Sept%202007/duraliner_PR07-DL.pdf)

 

[Hogwildz]

Not without insulation.... their aren't many liners out their that are rated to 0 clearance.. and duraliner is not one of them... Check the link below.

My duraliner is rated 0 clearance

(broken link removed to http://www.duravent.com/sdv%20newsletters/Sept%202007/duraliner_PR07-DL.pdf)

Nice try, but read again, and read about Duraliner, which is a double wall, insulated rigid liner. Here is the correct link. http://www.duravent.com/?page=4.php
It is 0 clearance to combustibles in masonry. Which most chimneys are.

Not being mean, but ya might want to have your webmaster proof read your rigid liner description area on your site. I could be wrong, but I believe nickel is not spelled niclel.

 

[Apiator]

So it sounds like the 304 S/S liner will work fine. Now I need to decide if insulating it will be worth the added cost. Thanks for the replys. Also...Can a high temp insulation be purchased at Lowes/Home Depot??

Thanks

 

[mellow]

Can a high temp insulation be purchased at Lowes/Home Depot??

Just buy a wrap kit from whoever you buy your liner from, it will come all ready to go no guessing how much insulation you will need and it will come with all the needed supplies. And it can not be purchased at any of the big box stores.

 

[Hogwildz]

There is a couple things to consider.
1). Make sure you have enough room with the existing flue when adding the added thickness of the insulation wrap.
2). I weighed the cost of a flex liner with insulation wrap vs. double wall insulated rigid. The difference in cost was not too bad, and the rigid was fairly easy to install.
No HD & Lowes do not sell insulation wrap that I am aware or. You can get it fairly reasonable on Ebay.