S trap Vs P trap Toilet What’s The Difference

S-trap Vs P-trap Toilets

Are you confused about S-trap Vs P-trap Toilets? Well, We guide you in-depth and tell you the differences between them.

Toilets have different exterior appearances that can be identified by anyone, as well as internal ones. There are also a variety of configurations for toilets, including S-traps and P-traps. These traps completely prevent foul gases and water from flowing back into the toilet and into the bowl.

S-traps and P-traps are also fully functional as important filters for debris and other various objects. That is extremely important as some objects and debris could prevent the sewage from flowing through the sewer pipes. However, S-traps and P-traps have several differences that make them have different functions and offer various advantages.

Also Check: How to Remove Brown Stains from Toilet Bowl?


What are the S trap Toilets?

Talking about S-trap toilets, This type of trap is generally favorable for all those living in facilities on the ground floor. Thanks to floor-mounted type toilets (those where the pipe runs through the floor), this pipe was given the name “S.” Thanks to the resemblance of an “S” on the side, the water in the basin has the freedom to flow directly downwards and rise upwards.

The moment the water rises upward before going back down, the S-trap creates a trap at the bottom of the first bend. This type of toilet trap is one of the oldest on the market and is very common today. However, because they are very old traps, some design aspects are very outdated for some people’s needs.

A Very Common Trap

S-traps date from the beginning of the 20th century and were a very standard configuration for different drains (very common in homes). It was installed in the drains (under the bathtubs and sinks) and formed the letter “S.” Normally. The water was diverted lightly and gently until it ran directly to the drain under the floors.

Some Present Drawbacks

All S-traps can take up a lot of space around the exit of different waste (human excrement). For this reason, this type of “S” shaped trap is used for all those toilets that are at ground level. These traps are very easy to siphon dry, it can cause the toilet’s water level to drop, unlike other traps.

When toilet water runs down, it allows sewer gases to enter and cause bad bathroom smells. Although this can be remedied by pouring a glass of water down the toilet, it should not happen.

Applications of “S” traps

It depends on the different specific applications that the S-traps are used and the drains’ configurations. On some occasions, the water can flow forcefully through the S-traps, leaving the trap empty. That allows an air gap to be left that causes foul and horrible gases to escape through the trap straight into the sewer or drains.

What are the P trap Toilets?

P-traps are almost similar to S-traps, only instead of lowering-up-lowering and creating the S’s shape, and it curves up. With this curvature up and then a straight line, a perfect open P shape is created; this is what causes this trap to be named after the letter “P.” They are commonly installed on the upper floors of apartments, offices, houses, and wall-mounted toilets.

P-traps are most commonly used in laundry and kitchen sinks found in a home. People generally (the majority) consider P-traps to be much more consistent and effective when it comes to maintenance. Compared to S-traps, these traps are more common for all those who live in high apartments or are on raised floors.

Design of the Traps in P

The design of the P-traps makes them much less vulnerable to drying out or loss of seal. A P-trap installed perfectly will never lose the water seal in any way or possibility. However, when these traps are not properly installed perfectly, they can lose their seal and allow fetid gases to enter the home.

A Necessary Replacement

The P-traps emerged as a perfect replacement for the S-traps, and this replacement was primarily aimed at sinks and eliminating the siphon problem. However, the water found in a P-trap may still have a chance to evaporate and leave the trap dry. There is currently no perfect, stable setup that can completely end people’s chances of having a dry trap.

Vented Tube

P-traps have very typical ventilation inside the walls and through the ceiling that allows the entry of outside air. By the time air pressures come to equilibrium within the drain, siphoning becomes much less likely. The negative pressure or the necessary “suction” action does not occur for the siphon.

S-trap Vs P-trap Toilets – What’s the Difference?

There are two types of traps that are the most common in most homes for toilet traps. S-traps and P traps are always present in the bathrooms. It all depends on the place or floor where a person is living (or has her bathroom). On the other hand, understanding the different configurations and functions of drains (S and P traps) are very easy and simple that anyone can understand.

Just as there are many similarities between the traps in S and P, there are also a great variety of notable differences. Among the main ones is that an S-trap is ideal for all those toilets in ground floor facilities. In contrast, P-traps are perfect for homes and toilets that are on very high floors.

S-traps, although they have been by tradition (since the 20th century) the most common in homes, this is no longer the case. S-traps are now illegal because when a quantity of water is drained into a sink, a siphon can occur. However, P’s trap is currently solving these problems; although it is not completely free, it will suffer damage to the siphon.

Final words:

A toilet is known to all the world people as an important toilet used to collect and evacuate human excrement. The toilet is connected to different sanitation facilities. For this reason, when evaluating and collecting human excreta, they are sent by the facilities. Thanks to the sanitation area through a clean water siphon, many unpleasant odors that go to the sewers or sewers are prevented.

The toilet’s basic function is to evacuate and collect all the different excrements produced by human beings. That is responsible for sending them to a sanitation area that prevents the different horrible smells that excrement can cause in inhabited areas. It has been considered a very important part of any modern home today to treat different human waste.

Although both types of toilet traps cover a lot of space in different ways, they may support any bathroom. It is recommended to all people who want to place a type of toilet trap in their bathrooms, to calculate what space to use. There are no identical bathrooms with the perfect measurements. For this reason, people must calculate or approach the perfect measurements.

Now you know S-trap Vs P-trap Toilets and The S and P traps are amazing objects for people’s toilets in homes, offices, or elsewhere. All people should evaluate which of these traps are the most suitable for their toilets and offer the greatest advantages and least disadvantages.

More Guides:

James Patrick

James Patrick is a plumber and doing work in this field for 10 years. He likes to write about toilets, showers, and every single product in the toilet. That's why He is running toiletvibe.com to help others.

Recent Posts