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Q: Do you have to put a vent pipe right behind a toilet?
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Can the vent pipe for the toilet have an elbow in it?

Yes.


Can a toilet be plumbed into the house stench pipe?

No, that is why it is called a vent pipe not a soil line


Can you connect a new toilet to an older toilet vent?

Yes if the vent pipe is 4" and vertical by code and there is nothing connected between your toilet tee and where you would connect your new toilet tee. If not worried about codes then yes you can connect to a 3" vent line if no other vent lines are connected down stream. If you have a vent pipe that is less then 3" and or you have other vents connected between your old toilet tee and your new toilet tee then NO you can not connect a new tee for your toilet.


How do you eliminate vacuum in toilet vent pipe?

1-Clear the obstruction from the vent or drain pipe 2-Be sure the vent is properly sized and graded up towards the penetration of the roof, or where it ties into the vent stack.


Iwant to install toilet in your workshop do you have to vent the pipe?

A toilet has to be vented otherwise you are trying to force liquid against the air in the drain and it is pulling against a vacuum. It will never flush right.


What size vent is needed for a toilet 2in 3in etc?

Any vent is usually the size of the drain or waste pipe it is connected to. 3 or 4 inch on a toilet.


When using shower toilet bubbles then leaks now toilet is clogging?

As waste falls down a pipe it creates a positive pressure in front of it & a negative pressure behind it. To allow waste to flow down a pipe properly these presures are balanced via a soil vent pipe. Im not a builder, but sounds like there may not be a soil vent pipe on your system, or at least an 'air admittance valve' (AAV can sometimes be used if the soil pipe cant be taken externally).


Do you need a vent on your toilet waste pipe our waste pipe goes in to the loft which is connected to a vent on the roof tiles I want to cut the pipe back to about 3 foot high can I just blank it off?

No, it has to be vented


You have condensation in your toilet vent pipe?

No I just checked and mine has no condensation, thanks fro asking


Where to install plumbing air vent?

The highest 4 inch pipe should have a vent on it, or directly above a toilet junction Above the flood level rim of the fixture it is servicing IT does not mean the toilet


When an upstairs toilet or shower is drained the basement toilet gurgles and drains when you flush the basement toilet at any time it's a VERY lazy flush unless you lightly-tip it off the wax?

Your vent pipe for that part of the plumbing is either blocked or non-existent. Having to tip the toilet off center slightly is letting air enter into the system, something that should be happening under normal conditions if the vent pipe were working properly. That vent pipe needs to be snaked out and cleaned.


What is the minimum pipe size to vent a toilet?

Normally 11/2" DEPENDING on developed length of piping and fittings