Do I need any screws for the pipes or twist lock is fine?

I'm using duravent and planning to cement each joint but no screws; I don't think its needed.

I have duravent on both stoves and everything is sealed with high temp sealer
except for the Tee. Going on the 4th year with my XXV and no leaks yet.

EDIT: Pipes are only twisted together and sealed, no screws were needed

IMO, you should put 3 sheet metal screws into the appliance adapter where it slides onto the stove exhaust......makes the rest of the pipe install nice & rigid. That's what I did on my Astoria.

I did not use screws with my install either, just twist lock with high temp goo. I do have to seal the end of the T joint or I will leak smells into the house.

If the stove install instructions don't specify then it isn't imperative to use screws,
but not all stove installation requirements are the same so folks reading this who
may have a different stove should always refer to the installation info for their
particular make/model stove.

moralleper said:

I did not use screws with my install either, just twist lock with high temp goo. ....

Click to expand...

My response above was directly related to the appliance adapter only. It does not twist-lock on, and i would not depend on silicone as my only means of securing it to the stove.

All other joints have the twist-lock, and should be fine....I didn't use any screws there either.

EDIT: Actually, I DID use screws on one other pipe....I used an adjustable pipe on my vertical run and wanted to make it more secure...... if and when I ever take the pipes apart, it wouldn't just fall off.

No screws are needed. If they were.....then the manufacturer would have included them.

macman said:

EDIT: Actually, I DID use screws on one other pipe....I used an adjustable pipe on my vertical run and wanted to make it more secure...... if and when I ever take the pipes apart, it wouldn't just fall off.

Click to expand...

Thanks macman. I was wondering if I need to do that with the adjustable pipe as it seems pretty flimsy when over the pipe it will extends. Does that pipe come with screws (if not what type of screw did you use)? I also noticed the rope gasket tends to push up the pipe, do you have to pull it down for proper placement? Since it seems so flimsy would silicone be advisable on that joint?

Here's a couple notes from http://www.duravent.com/docs/instruct/L550_July09.pdf, if this is the brand your using.
SEALANTS
PelletVent Pro does not require additional
sealant to be used at pipe joints, but in certain
circumstances sealant may be used if desired.
Seal the inner liner overlap at the male end of
pipe for best results (Figure 6)
Note: 500ºF RTV silicone sealant is required
on the following component connections:
• Connecting PelletVent Pro biofuel
(with gaskets) to PelletVent
Pro (without gasket) or another
PelletVent or CornVent.
• Connecting Appliance Adapter or any
other part when connecting to the
appliance outlet
• When using the Adjustable Length
section
8. Sections of pipe are connected to each
other by pushing them firmly together and
twisting. Screws are not required. However, if
screws are desired, use 1/4”-long sheet metal
screws. Important! Do not penetrate the inner
liner with screws.

geek said:

dac122 said:

macman said:

EDIT: Actually, I DID use screws on one other pipe....I used an adjustable pipe on my vertical run and wanted to make it more secure...... if and when I ever take the pipes apart, it wouldn't just fall off.

Click to expand...

... I also noticed the rope gasket tends to push up the pipe, do you have to pull it down for proper placement?

Click to expand...

which rope gasket? I didn't see one in my adjustable pipe (18 inches)

Click to expand...

On the duravent (not pro) adjustable pipe I saw a rope gasket like the other pipes have at their locking collar, only the gasket was further down inside the pipe.

Hope I'm describing the adjustable pipe catalog #33012A correctly :bug: - its the one that slides over another pipe (like 12") to extend it, adding 3" to 10". Correct?.

geek said:

which rope gasket? I didn't see one in my adjustable pipe (18 inches)

Click to expand...

I didn't either.

geek said:

which rope gasket? I didn't see one in my adjustable pipe (18 inches)

Click to expand...

I didn't either, I returned mine. Looked at the others they had in stock. Not one had it. I purchased the 24 inch instead. My stove location was not critical. I just moved it 6 inches inboard more. I wasn't going to chance it.

I also took macman's advice and screwed the adapter to the stove outlet. Sealed all the interior pipes with hightemp. I sealed inside and out on connections. I still found leaks. I had to seal every seem on the interior pipes.
Even the ones that ran parrallel to the pipe. While the stove is running used a drop light and looked at every seem. You might see faint smoke coming off.

I am using the 33000 series pipe rated for corn. The newer series is supposed to be better.

macman said:

geek said:

which rope gasket? I didn't see one in my adjustable pipe (18 inches)

Click to expand...

I didn't either.

Click to expand...

Are we talking about Duravent PelletVent or PelletVent Pro?