should I vent into sewers

little-soldier · Feb 24, 2008

I have a sewer cap in my room I was thinking of venting out there but its only like 3-4 inches wide and my fans are 6 inches.The room is 13 feet by 10 feet so I will most likely need both of my fans to suck the air out of the room into the sewers but my only question is what will happen if I have two 6" fans blowing through the 3-4 inch sewer pipe? will it kill my inline vortex fans?

tenfeetofganja · Feb 24, 2008

Measure the size of the hole and go look for an adapter at your local hardware store (lowes/homedepot/etc.)

tripples · Feb 24, 2008

i dont know what your talking about but you do realize there are gases that come from sewers right? and if it was to ever back up youd have quit a mess with shit and such all over your room.. im gonna go ahead and tell you no this is a very bad idea

tripples · Feb 24, 2008

on top of that you start putting pressure into a plumbing system and your gonna blow the water right outta your p-traps, and then youd have sewer gas coming from all your fixtures in your house.. deadly stuff man.. and also stinks very bad.. ill repeat myself cause this is very important.. sewer gas is DEADLY!! and it is also very flammable.. These include hydrogen sulfide, ammonia and methane(which are highly toxic), as well as carbon dioxide, sulfur dioxide and nitrogen oxides. i suggest you find another option..

fumancu · Feb 24, 2008

It would probadly take the path of least resisteance the vent pipe on the roof.Could smell it for a mile down wind.

little-soldier · Feb 24, 2008

even jeorge cervantes says u can exhaust out into the sewers but now that your talking about pressure i dont know if I really wanna go for it anymore.
Has anybody ever tried it?

facelift · Feb 24, 2008

Sewer gas has already been brought up. I just remember an episode of Ask This Old House where the boys created a vent for radon gas to enter the ground. This my work out better. Go to THISOLDHOUSE.com and look for the ASKTHISOLDHOUSE tab, or search for radon gas at the site. I know it requires drilling a hole into foundation, but you might be able to vent out through a sidewall and then into the ground.

Unless you're in an apartment building, townhouse or condo. smell really should be a major concern.

tripples · Feb 24, 2008

there is no pressure in a plumbing system.. when you start adding pressure to it you have serious problems.. a p-trap is a device installed in all of your plumbing fixtures that use water as a seal to keep sewer gasses from entering into your house.. when you put pressure to it, the water is blowed out.. now even a toilet that is not installed correctly with correct venting can cause nearby fixtures to blow out the p-traps.. which is caused by an "air bubble" moving down the pipe past your next fixture and looking for more air to help the water go down the drain which is behind the air.. this is caused by even 1.6 gallons of water moving down the pipe.. imagine how much pressure your putting into the pipe with 2 six inch fans..
jeorge cervantes was no plumber, now was he?
my info is legit.. take it or leave it.. but ill say it again sewer gas is deadly..

tripples · Feb 24, 2008

the radon gas thing.. they install a pipe that goes into the ground through the floor, a lot of times in a basement.. then there is a fan that pulls air out of the ground, and vents it out of the roof.. there should be a little air under there.. caused by gaps in between stones and such underneath the concrete.. they are pulling air outta this space not pushing air into it.. if you start pushing air into the ground it gotta go somewhere.. where? prolly thru the cracks in your concrete and right back into your house.. they do all this so it doesnt seep up into your house, which is where it would go if you dumped it into the ground..

globel · Feb 24, 2008

dont vent. use co2. just exahust the heat it wont smell

greenisgold · Feb 24, 2008

Okay, I tried this and the pipe I was venting into was in the basement and about 100 feet from the main sewer pipe (it was a clean out trap that was not in the main line of poop flow). I was also venting above the main sewer pipe, up on a hill. I had a 6 inch vortex fan. This lasted about 1 day. Not because of any gases because I could not smell a thing. What happened is that the forced air created a vacuum and was slowly sucking the water out of the piss-pots. I would not do it.

tripples · Feb 24, 2008

thats exaclty what i was talking about.. the water that was pulled out of your toilet is in fact the water that is used as your p-trap.. pressure in a drainage system is bad.. and causes problems..

Microwido · Feb 24, 2008

Bad idea.

RussCargill · Feb 25, 2008

I know that the gas is bad shit. But I have a question for a plumber. I have a T in the drain line running from the bathroom sink. One end of the t continues down the line. The other runs a tube up the wall and vents into atmosphere. Is this as well trapped off from the main lines?

TGT · Feb 25, 2008

Here in town recently there was a grow-op busted in a store front basement on a main street. It was brought to LEO's attention because city workers in the drain sewer reported an overwhelming smell of marijuanna when carrying on with their regular everyday duties. They traced it right back to it's source and then got a warrant. Hundreds of plants were destroyed and even the owners admitted to thinking it was a fool proof plan.

I have tried venting down a sewer drain in a basement before and it worked great and my plummer friend who has been in the business for years stated it would cause no problems health wise, at least with the way my drain is set up. I can't say forsure if this pertains to all sewer drains.

So I believe it can be done in some situations as long as it ends up joning to a rain sewer. You will still have to worry where that smell is going and who is smelling it. Personally I think all venting should be carbon scrubbed first, then think about venting down a sewer later. Better safe than sorry.

TGT

tripples · Feb 25, 2008

russ im kinda confused by what your asking, but i think if your asking if the line that is going up the wall and outside is trapped.. then the answer is no.. its an open vent pipe that allows air to be sucked in to your drainage system in order to aid the water down the pipe and also to let sewer gases vent outside to the atmosphere.. the only traps are your p-traps they are what your lavs sinks toilets first dump into.. they have a u bend in it.. the u holds water at the level of the pipe coming outta the back of the u.. the water is your trap.. it stops gases from coming up thru your drain.. look under your sinks and you should see these.. if not you need to have this fixed..

RussCargill · Feb 25, 2008

No all my traps are in the right spot. Just wondering if I guy could vent his clean air out that vent pipe safely without blowing water all over the house?

Brownpants · Feb 25, 2008

Venting in a sewer is not usually a good idea, it might come up through other places like sinks or drains etc..

Carbon filters are better if you have the space to vent into another room.

good luck

little-soldier · Feb 25, 2008

thx for the info peop, its greatly appreciated
so all in all dont vent into sewers even if its doable

tripples · Feb 25, 2008

thats correct..

should I vent into sewers

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