Understanding Flush and Siphonic Toilets: Key Differences Explained

Common toilets on the market include drop flush and siphon types. Many friends may be unclear about the differences when selecting between them. Let's take a look at the differences.

一、Differences between drop flush and siphon toilets

The main differences lie in the flushing method, anti-clogging ability, water-saving features, and noise levels：

1、Flushing method

Drop flush toilets use the force of water flow to push waste out. The wall of the toilet bowl is designed to be steep, resulting in a small water seal area and low water storage. Siphon toilets rely on the height difference between the water seal and the trap to create a siphon effect, using vacuum suction to draw waste away in a swirling motion. Siphon toilets have a gentler slope on the bowl wall, a larger water seal area, and higher water storage.

2、Anti-clogging ability

Drop flush toilets have short and straight drainage pipes, making them less prone to clogs. Siphon toilets have longer, more curved drainage designs, which can lead to clogs. Therefore, drop flush toilets generally have better anti-clogging abilities than siphon toilets.

3、Water-saving capability

Drop flush toilets use water force efficiently to clear waste from the drainage pipe, requiring less water to do so. Siphon toilets have a smaller diameter pipe and longer drainage length, leading to high water pressure requirements. Waste can only be removed after the water level rises significantly, making them more water-consuming. Thus, drop flush toilets are generally more water-saving.

4、Noise level

Drop flush toilets produce a loud noise due to powerful water flow and a small water storage area; the impact on the pipe walls creates a significant sound, resulting in a less quiet operation. In contrast, siphon toilets allow water to flow down from the bowl wall gradually, resulting in a stronger noise-dampening effect.

二、How to choose a toilet

1、Toilet brand

When purchasing a toilet, it’s best to choose well-known brands, which often ensure better quality and more comprehensive after-sales service.

2、Toilet weight

Higher quality toilets are heavier. An average toilet weighs around 30kg, while a decent one weighs between 40-50kg.

3、Toilet appearance

A quality toilet should have a smooth and even glaze without bubbles or uneven surfaces. Both the glaze on the bowl and the outlet should be smooth and even.

Conclusion：This concludes the introduction to the differences between drop flush and siphon toilets. I hope it's helpful. For more related information, please continue to follow the Hawkrown consulting platform.