Ventilating out of the plumbing pipe sticking out your roof

hwy420

hwy420

Well-Known Member
I've not been able to find any good threads about this. What is the possibility I could exaust my hot air from my grow room through the Plumbing Vent Pipe(s) sticking out of my roof? Anyway to tap into them? Does it stay empty and can I force air into it from my grow room and exaust the hot air into the sewer?
 
hwy420 said:
I've not been able to find any good threads about this. What is the possibility I could exaust my hot air from my grow room through the Plumbing Vent Pipe(s) sticking out of my roof? Anyway to tap into them? Does it stay empty and can I force air into it from my grow room and exaust the hot air into the sewer?
Click to expand...


You can cut your stack pipe and install a ‘Y’ and vent up through it. I have never done it myself but I have told a number of people who needed a place to vent through that in their cases it was the best and most practical way to go.

The pipe that runs through your roof is a venting system so the drain portion of your plumbing will work. Without a venting system the drain part would not work. It does not handle waste and it does not connect to your sewer so you would not be venting into the sewer or into a septic tank. You would be venting up through your roof and into the air just as if you installed a dryer vent on the side of your home to vent through other than it would be high up.
 
That's true but you wouldn't have a conspicuous vent on a wall or roof. If you tap into the actual sewer pipe, the traps in your house would prevent the gases from coming in to your place.
 
Im based in the U.K. & Im just wondering how the houses in America (assuming you fellas reside there) are setup to allow for this type of ventilation. Can somebody please post photos, pics or a simple diagram of the connectings to enable whats at topic?
 
iloveit said:
Im based in the U.K. & Im just wondering how the houses in America (assuming you fellas reside there) are setup to allow for this type of ventilation. Can somebody please post photos, pics or a simple diagram of the connectings to enable whats at topic?
Click to expand...

All houses will have a soil pipe from the toilet that vent outside they just might be outside the house or more likely boxed in and hidden.

Chimney is just as easy if you got one
 
Is this the pvc pip that runs up and out of the top of the roof? I was going to do that but didn't want to fuck anything up... I guess you could just cut a hole in it with a circular saw and seal it up after the ducting attaches to it...

p.s and def pics of this way would be great.
 
I wouldn't cut a hole in it, buy a tee that directs the flow towards the sewer, PVC is easy, it's when you have cast iron that you need to rent a special chain cutter to tap in. here's a pic of a typical drain/ vent system.


murtymaker said:
Is this the pvc pip that runs up and out of the top of the roof? I was going to do that but didn't want to fuck anything up... I guess you could just cut a hole in it with a circular saw and seal it up after the ducting attaches to it...

p.s and def pics of this way would be great.
Click to expand...
 

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There's some misinformation in this thread. If you tap into the vent stacks in your attic it will vent out the roof, not into your sewer pipe. If you hack into the sewer pipe under your home it will vent into the sewer and not into the attic and out the roof. There is a water trap on every plumbing fixture that blocks air from going on way or the other.

Also whoever said the vent lines aren't connted to the sewer lines is wrong. They are directly connected and only seperated by the little bit of water in the traps in ea fixture.

Lastly if you have a strong fan it will blow the water right out of the trap and then who knows what way gasses will flow.

And if you are tapping into the sewer line (not vent line) you'd best just run exhaust 24/7 into it until the day you patch that tap up. No one way valve in 3 or 4" size will work well enough to really stop gasses from going the other way completely.
 
Even if you exhaust to the sewer pipe under the floor some of the exhaust will still exhaust upwards through the vent pipes and out the roof. You still need a scrubber for odors but your heat signature will get dispersed. The vent lines are directly connected to the sewer pipes, that's how a plumber runs the snake through the vents on the roof to hit the main sewer lines. It doesn't matter that some heat may come out of the vent because that's what happens when you run hot water in your sinks and bathtubs. 24/7 fan operation is a must or your ladies can get sewer gasses with the fan off.

OregonMeds said:
There's some misinformation in this thread. If you tap into the vent stacks in your attic it will vent out the roof, not into your sewer pipe. If you hack into the sewer pipe under your home it will vent into the sewer and not into the attic and out the roof. There is a water trap on every plumbing fixture that blocks air from going on way or the other.

Also whoever said the vent lines aren't connted to the sewer lines is wrong. They are directly connected and only seperated by the little bit of water in the traps in ea fixture.

Lastly if you have a strong fan it will blow the water right out of the trap and then who knows what way gasses will flow.

And if you are tapping into the sewer line (not vent line) you'd best just run exhaust 24/7 into it until the day you patch that tap up. No one way valve in 3 or 4" size will work well enough to really stop gasses from going the other way completely.
Click to expand...
 
A check valve, clack valve, non-return valve or one-way valve is a mechanical device, a valve, which normally allows fluid (liquid or gas) to flow through it in only one direction. Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave. There are various types of check valves used in a wide variety of applications. Check valves are often part of common household items. Although they are available in a wide range of sizes and costs, many check valves are very small, simple, and/or cheap. Check valves work automatically and most are not controlled by a person or any external control; accordingly, most do not have any valve handle or stem. The bodies (external shells) of most check valves are made of plastic or metal.
An important concept in check valves is the cracking pressure which is the minimum upstream pressure at which the valve will operate. Typically the check valve is designed for and can therefore be specified for a specific cracking pressure.

http://en.wikipedia.org/wiki/Check_valve
 
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