Ventilator led toilets for toilets to 2 different floors?

[swift2540]

A membrane aerator in different "shapes"
Ex: http://www.richardson.fr/les-produits-richardson/plomberie/pvc-evacuation/aeration/nicoll/aerateur-a-membrane.html

For the standard (extract), it is here:
http://www.nicoll.be/content/user/File/cat/catalogs/fr_cat/sav.pdf

To avoid the "gurgling" of air suction on a toilet, you need at least 75 / 80mm. Below, it attenuates but does not completely prevent.

As much as possible, it should be installed above the level of the bowl. Otherwise, you will understand why at the first stopper

Now if you plan to mount the pipe to the roof, do it in 50mm min, and there no need for an aerator, just a pvc hat anti big bugs.
Ex: http://www.nicoll.fr/batiment/les-produits/produits/group/chapeau-de-ventilation-simple-580

[r2d2]

ok, very interesting doc, if I sum up I pass through the wall of the ... underground (28cm of concrete) ..... in the underground, at the start of the right descent I drill a 50mm hole
taken with a "flange" on the cast iron pipe, the 50 mm pipe will go up to the edge boards it will be fitted with a cap
it's all good ?

question so far I have not had any concerns either of odors or of "gurgling" following the flushing ... an explanation?

but with a second toilet in the basement? I don't want to tempt the devil.

[swift2540]

ok, very interesting doc, if I sum up I pass through the wall of the ... underground (28cm of concrete) ..... in the underground, at the start of the right descent I drill a 50mm hole
taken with a "flange" on the cast iron pipe, the 50 mm pipe will go up to the edge boards it will be fitted with a cap
it's all good ?

Yes! With 2 conditions:
1) the ventilation must not go down (otherwise you create a siphon which can fill with condensation water for example)
2) Be careful not to go out near a window / air intake; it's the sewer live, hello smells

question so far I have not had any concerns either of odors or of "gurgling" following the flushing ... an explanation?

1) If there is a hidden reduction in the floor (wc, a piece of 80 or 90mm then cast iron of 110mm) it is impossible to fill the pipe
2) old cast iron gaskets are waterproof but porous in air; with the venturi effect (suction of air at the passage of water) you avoid gurgling
3) the wc-cast iron connection is not very catho and only works without leakage because it is vertical (not waterproof fitting)
4) you have the pot

but with a second toilet in the basement? I don't want to tempt the devil.

The downstairs wc could make the upper one gurgling by trying to suck in air.
Additional tip: Connect your toilet downstairs with an 80 / 90mm outlet and then reduce 80 / 110mm.
http://www.nicoll.be/fr_BE/catalogue/specialites-sanitaires/accessoires-wc-pvc.html
PS: You see in this doc that there is a possibility of finding an exit with 50mm "ready-made" stitching.

[Did67]

question so far I have not had any concerns either of odors or of "gurgling" following the flushing ... an explanation?

1) If there is a hidden reduction in the floor (wc, a piece of 80 or 90mm then cast iron of 110mm) it is impossible to fill the pipe
2) old cast iron gaskets are waterproof but porous in air; with the venturi effect (suction of air at the passage of water) you avoid gurgling
3) the wc-cast iron connection is not very catho and only works without leakage because it is vertical (not waterproof fitting)
4) You got the pot: mrgreen:

Perhaps, the air flow is not very free downstream: so the air in front of the column perhaps goes into a well closed pit?

In this case, the downstream "compression" slows the fall; the front air passes behind and this limits the effect of "pump" and gurgling ...

[r2d2]

Did67, I'm in the sewer (no pit)


after family reflections wall, we decided to place the WC room just at the bottom of the downpipe (see below)
this will eliminate a lot of potential worries.

swift2540,
So here is my installation (if I understood correctly all that was said above, in blue it is the pipe with aerator of 40 followed by a tube of 40 which passes through the wall and which exits at the outside to go up to the edge boards it will end with a "hat" (yes it is far from a window)

I should have mounted the WC on a small platform (rubble and concrete)
so as to have the outlet at the level of the pants.

this diagram seems ok to you?

[swift2540]

Yes, all good.

Just a detail: plan the slab to be able to put feet there ...

[r2d2]

ok, i'm planning to start work early next week.
for the 40mm aeration pipe, I think it will somehow also "ventilate" the vertical pipe and therefore the top toilet, right?

what do you mean by

plan the slab to be able to put your feet there ...

[swift2540]

for the 40mm aeration pipe, I think it will somehow also "ventilate" the vertical pipe and therefore the top toilet, right?

No, but since you don't have a problem, it doesn't matter.
It will, on the other hand, prevent the toilets from draining each other, that's what is important.

what do you mean by

plan the slab to be able to put your feet there ...

That the slab on which you put the toilet is large enough to put your feet on, otherwise the children will have to jump to pee
Without laughing take a kitchen chair, put it in place of a living room chair and sit down, you will have the impression of shrinking by 10cm, while your seat height hardly varies from ~ 2 to 4cm .
Imagine yourself on a toilet 10 or 20cm higher than usual ...

[r2d2]

effectively !! thank you all

let's go for the works !!

[Did67]

Uh, sorry: I don't see the point of drilling at the top and bringing the air behind the WC down by a pipe:

a) it is not the horizontal half-meter that will create an aspiration; we will be satisfied with the fact that it does not get blocked; no aspiration effect to be feared at this level (the horizontal branch to connect the additional WC; therefore, it is in the interest of "bringing" the air intake back to this level!

b) as I wrote above, I suspect that the fact that there is no "gurgling" so far at the top may be related to the fact that the air in this downcomer does not escape downstream (if the pipes lead to closed, non-ventilated pits?).

In this hypothesis, the modification to lead to an acceleration of the fall in the column, the air downstream of our "mixture" being evacuated through this added tube, the speed would be accelerated; and since there is no air intake or anti-gurgling system at the top, well we could create this gurgling suddenly!

c) it is indeed at the top of the column that the air intake must be managed, either by putting an antiglouglou at the top, or at least by connecting the air intake at the top of the vertical part (with sufficient enhances, of course) ...

Sorry to come so late ... The topic was out of the box of recent posts, I lost the thread ...