Do Toilets Come with Built-in Backflow Valves？

In daily life, we often encounter toilets, which are very convenient to use. However, most people are not familiar with the internal structure of toilets. For instance, do toilets come with backflow prevention valves? Let's take a moment to understand this.

Do toilets come with backflow prevention valves：

Most toilets come with built-in backflow prevention valves, but some may not. It's important to pay attention when purchasing one. The primary function of a backflow prevention valve is to prevent the water in the toilet tank from flowing back into the pipes, allowing the toilet to refill automatically. However, a backflow prevention valve is not strictly necessary for toilets, as the water in the tank is not under pressure, so backflow is generally not an issue. Even if a backflow prevention valve is installed, it does not play a significant role.

Types of backflow prevention valve installation：

1、Swing type backflow prevention valve

This type of valve is usually installed flush with the pipeline, with a connection diameter of about 80 millimeters. In special situations, it can also be installed vertically on the pipe, but it's essential to master the installation method; otherwise, it may become unusable or ineffective.

2、Stop type backflow prevention valve

This type of valve can only be installed horizontally in the pipeline. As water flows through the pipes, it generates some pressure. To ensure the longevity of the backflow prevention valve, it is crucial to ensure a tight connection during installation to avoid damage from excess pressure, which could lead to leaks.

3、Lift check valve

This type of valve needs to be installed vertically in the pipe, allowing water to flow upward. However, since backflow prevention valves can be delicate components, it is advisable to install another backflow prevention valve near the water pump. This way, even if the first valve fails, the valve before the pump can continue to function.

In summary：we have covered whether toilets come with backflow prevention valves and the different installation types of backflow prevention valves. Since toilets are used frequently in households, it's important to choose a high-quality one; otherwise, problems may significantly affect your quality of life. If you would like to learn more about toilets and related topics, feel free to follow Hawkrown.com.