What is the difference between an S trap and P trap?
An S – trap exits at the bottom of the toilet, and is designed to outlet directly through the floor, where a P – trap exits at the back of the toilet and is designed to outlet through a wall. If you have a P Trap toilet you should not be too restricted as most P Traps have a standard set out.
Why do pipes have an S bend?
An S -shaped trap is also known as an S – bend . Because of its shape, the trap retains some water after the fixture’s use. This water creates an air seal that prevents sewer gas from passing from the drain pipes back into the building.
Why is an S trap illegal?
Back to ” S ” traps – The reason ” S ” traps aren’t allowed is because they have the potential to suck, or ‘siphon’, water out of the trap as the water flows down the drain. Believe it or not, enough water to break the water seal at the trap and let sewer gases come in to the house.
How does a U bend work?
That “ U – bend ” is Actually the “P-Trap” The p-trap’s function is to create a water seal between the opening of the drain in a sink and the wastewater further down the pipe. The decomposition of wastewater in the plumbing releases sewer gases with unpleasant odor, and this gas naturally rises back up the plumbing.

Does shower water and toilet water go to the same place?
In the US, with modern regulations, in most municipalities, yes, they do . The water and solids from your toilet waste line and the water from your drains end up in the same sewer line, if you have access to a municipal sewer system.You might be interested: Plumbing tools names
Is an S trap legal?
The “ S ” trap is prohibited under the Uniform Plumbing Code throughout the United States. This is because the “ S ” trap will siphon or suck water out from the trap which will end up releasing methane (sewer) gases into the home. So, it is a code violation and if you are doing remodeling, you will have to replace it.
What is an S bend toilet?
Determine your pan type The trap is the bend in the toilet pipe that expels the waste. The S – trap has a waste pipe that’s connected to the floor, while a P- trap pipe connects to the wall. A skew pan is sometimes found in older homes – it has a pipe that extends either side of the toilet bowl.
Does every P trap need a vent?
Every fixture is required to have an internal or external trap ; double trapping is prohibited by plumbing codes due to its susceptibility to clogging. Every plumbing fixture must also have an attached vent . All plumbing waste fixtures use traps to prevent sewer gases from leaking into the house.

Can a sink drain go straight down?
You cannot have a code-approved sink drain going down , unless you have a vent going up.
How do you clean an S trap?
Some traps have a cleanout plug on the bottom of the bend. To clean these types of traps , simply unscrew the plug and use a stiff wire to snag and remove the clog. Be sure to have a bucket under the drain because there will be water in the bottom of the trap .You might be interested: Online plumbing courses australia
What is a fanny trap?
Fanny Trap is definitely slang and not something I would say to a female customer or a female worker at a merchants. It is slang for a Hep waterless trap , – and if you can’t work out why it got that name, I suggest you start getting interested in women.
Can I use S trap for sink?
S – traps are no longer used in modern plumbing because the water can be sucked completely out of the trap allowing sewer gas to enter your home.

How do you unblock you bend?
Look under your sink and find the U – bend , it’s the first bend in the pipe immediately below the plughole. Put your bucket/dish under the U – bend and carefully unscrew the section of pipe. The U – bend has two sets of threads, one at either end. As you loosen them any backed up water will drain out, so take your time.
Which is better P trap or bottle trap?
Like the ‘ P ‘ trap , a disadvantage of the ‘S’ trap is that it requires a fair amount of room around the waste outlet. The ‘ Bottle ‘ trap takes up less radial space under a waste outlet and is ideal for pedestal mounted basins where space is usually very limited. They can however be deeper that the ‘ P ‘ and ‘S’ traps .
Should there be water in the U bend?
The simple answer is that the water trapped in the U bend acts as a barrier to the foul smells that otherwise rise from the sewer or other drainage pipework. This is why it is an absolute requirement in the building regulations.