90° bend in 4" vent

DangerMouse

Is it OK to put in a 90° bend to get the vent to where I need it? Or should I use 2 45° fittings? Or can I do this at ALL?

Thanks!

DM

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Proby

Is this for a dryer? Bathroom exhaust? It's best not to use 90's, but sometimes you have to. It's better to use (2) X 45's if you're able.

For plumbing vents, this doesn't apply.

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LateralConcepts

There's nothing wrong with that in a vent

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TheEplumber

Are you in an attic, floor joists? What requires a 4" vent?

DangerMouse

It's the main stack for the toilets, sinks, etc. through the roof. Where the drain is now, I need to move the toilets forward about a foot, and the vent back 6" or so to line up with a 6" wall to hide the ugleee tube. We had one right next to the toilet in our old house, and it looked like crap. I'm hiding everything, but leaving it as accessible as possible by planning it all out first. Ya never know when I might need to add a line for something....

DM

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DangerMouse

like so.....

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majakdragon

As long as you maintain an upward sweep, you will be okay. I, too like to use 2 45's in case I ever need to clean it out. Easier to install now than wish you had, later, even though cleaning would probably never be required unless a squirrel fell down the vent pipe.

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DangerMouse

I think that'd be best, yup. 2X45° seems to be the way to go. I'll have a critter cap on the top though.

Po)

DM

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DangerMouse

Hmmm, it's going to be a tight fit with 45°ers, but it might just fit. If not though, the 90° is OK?

DM

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NHMaster

If the horizontal part of that 4" is below 6" above the highest fixture and it is not part of a wet vent then you can not do that. It must rise vertically.

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DangerMouse

It'd be a couple inches below the floor. Highest fixtures would be sinks....?

DM

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TheEplumber

Use 2 45's instead of 2 90's? It will still be considered vertical

DangerMouse

I'm not so sure 2 45's will fit.... would this setup be acceptable? IT fits down there almost to the 1/4"! Puts the two toilet pipes right in line too!

Thanks!

DM

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NHMaster

Technically....no

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DangerMouse

OK, two of these should still give me enough play to line up the vent through the 6" wall.... (I hope)

Thanks!

DM

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