Understanding the Need for a Water Trap in Toilet Systems

When installing a toilet, there are quite a few details to pay attention to, especially in terms of installation. Here, I will introduce whether a floor-mounted toilet needs to have a water trap.

Do you need to install a water trap for a floor-mounted toilet？

No, you do not need to install one, as toilets already come with a built-in water trap. A water trap is an accessory in the drainage system of a plumbing fixture, and it helps prevent gases from the pipes from entering the room. Therefore, it is essential to have a water trap below the drainage outlet.

What should you pay attention to when purchasing a floor-mounted toilet？

1、Weight

When buying such a product, you should first consider its weight. Generally, heavier products are better. A typical toilet weighs around 50 pounds, and those of higher quality can weigh around 100 pounds. The heavier the toilet, the greater its density and quality. When choosing, you can lift the tank lid and gauge the weight; if it feels heavy in your hands, it indicates a better quality product.

2、Drainage outlet

When purchasing, also check the bottom of the product. It is essential to choose one with a single drainage hole, as many on the market have three holes. A single drainage hole is preferable because too many drainage holes can affect flushing performance. When buying, don’t be misled by salespeople; if the toilet has a horizontal drainage outlet, ensure that the product is compatible with horizontal drainage to guarantee smooth sewage flow.

3、Glazing surface

Pay attention to the glazing surface when you buy it. Generally, a smooth and bubble-free surface with a rich color is better. To check the glazing, try to feel the drainage area with your hand. If it feels rough, it is not of good quality; if it feels smooth, this indicates that the product is of better quality.

In summary：This concludes the topic of whether a floor-mounted toilet needs a water trap. You do not need to install one, as toilets already come with a built-in water trap, which serves a significant purpose.