Ummm....
Don't smoke out of PVC. Especially don't smoke fat soluble compounds of PVC.
PVC getting in to your body is really, really bad for you.
this post was submitted on 28 Jul 2024
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Ehhh we got microplastics in us already, might as well give them some friends to hang out with.
You need to talk to that plumber about how dangerous smoking pot out of this is, dude is going to get himself cancer.
I feel like I'm the only person here concerned about the fact that that vent 90 almost certainly doesn't go to a vent. Looks like it was probably installed by someone who would try to use a bong made out of PVC.
There is a wooosh here, though I'm not sure it's on you or me.
In case it's you, it is just a bong and doesn't go anywhere. That bit on the bottom is just the stand and the pipe doesn't connect to anything below the floor, it's just sitting in the cupboard.
If you already knew this, then the wooosh is on me lol.
It's an effective way to hide a bong in plain sight because it looks like it's a vent pipe. But I do agree with this saying don't smoke something with a PVC-based pipe (though I'd extend that to say your smoking utensil shouldn't involve any plastic whatsoever other than maybe o-rings, but my glass-only rig is able to seal well without them).
It’s on you. They’re talking about the 90 degree elbow behind the bong that heads upwards. It’s piped like it’s to a vent, but the location relative to the cabinet opening means the vent for the sink is… between you and the sink
[edit] so their comment is saying “yea I see the bong, but that plumbing work is shit and I can’t get past it”
Ah, yeah, I see that now, rereading what they originally said.
Out of curiosity, what is the issue with using a vent 90 degree elbow vs whatever should be used there instead?
Btw, I'm assuming that's the drain pipe coming from the sink above rather than a vent, especially since it looks like the dishwasher drain is attached to the horizontal part... Wait, is it attached to the bottom of the horizontal section??
Edit: looks like it's sloping downwards the wrong way, too, if it is a drain pipe.
Drains should always have a P-trap within so many inches of the drain opening. That prevents sewer gas from escaping from the drain. This is what should be there if it's a sink drain.
The issue with a vent 90/elbow in a sewer line is that they slow the water flow and can easily become obstructed. Normal elbows are curved to help prevent the water flow from slowing down.
Thanks for the info!
Why does the p-trap need to be so close to the opening? As long as it's somewhere along the line, shouldn't it prevent gases from flowing? My own kitchen sink doesn't have a p-trap in the cupboard below but I assume there's one downstream because I've never noticed sewer smells in the kitchen. I figured it was the developers being cheap as soon as I noticed it, but they seem to at least have prevented the issue another way, so it's hard to say if they were cheap or just efficient (or maybe neither if it's just a p-trap in a different location).
My bathroom sink does have a p-trap under the sink though, so I'm still confused as to why it's done one way in one spot and another in the other.
Only other guess I have at this point is it was done that way to simplify fitting the drain pipes under the sink because the hole for the pipe is directly underneath the one sink drain and it just feeds directly down via a vertical pipe, with the other sink's drain feeding into that via a y-connection.
One problem with a "central" P-trap is that if it were done that way, you're going to get nasty smells somewhere. Sewage frequently doesn't make it out of your house as fast as you think it will and running water down the drain changes the air pressure in the drain line to varying degrees.
The main reason it's positioned so close to the drain opening is to accommodate venting. Every drain opening has to be vented, typically with a pipe going through the wall to a vent stack in the attic, to prevent the P-trap from being sucked dry when you do something like flush the toilet or run the clothes washer.
Ever run the washing machine and hear a sink on the other side of the house gurgling during the drain cycle? That's because the washer draining increases the air pressure in the sewer line and the sink isn't properly vented causing air to bubble through the the P-trap.
Ok, I don't ever hear gurgling from other drains, so whatever they did end up doing must be set up properly. There is what looks like a capped vent that ends just a bit above the cupboard floor, guessing it acts as a buffer for air pressure to allow it to fluctuate without venting the gases into my living space.
Might be an air admittance valve. Those are usually used when venting to the roof isn't possible or practical.
Plumbing is one of those things that's sort of an art. You can do a whole bunch of shit wrong and have it still technically function properly. Nobody will know except you and the next person who actually knows what they're looking at.
He couldn't lay the pipe so he stood it up
That's for the good shit.
Mmmmmm microplastics 🥰
If you try smoking out of PVC pipe, microplastics will be the least of your concerns. PVC is a thermo hardening plastic, which means it doesn't simply melt but instead starts to decompose when heated. As it decomposes it releases fun stuff like toxins, carcinogenics and chlorine gas.
In the past PVC was everywhere, these days it's mostly gone. There has been a big push to reduce the use of PVC as much as possible. For sewage it's still used a lot because the risks are low, but a lot of other places it's gone.
Um hate to break it to you, but we use PVC conduit a lot in the electrical industry. It's the only conduit rated for underground use (except galvanized rigid, but that shit's stupid expensive, and it'll still rust out eventually).
It's also the go-to for irrigation piping.
But doesn't the sewage end up somewhere eventually where we would rather not have it be full of extra toxins
Thankfully sewage is not very hot once it is down in the pipes so they don't leech out the gross stuff.
Actually, it's an extremely aerobic environment full of organic compounds and bacteria, that is remarkably active and generates a lot of heat.
So much heat that where I live it is harvested to heat buildings.