Everything You Need to Know About Toilet Drain Outlet Dimensions

When installing a toilet, there are many aspects to consider, such as the drainage outlet. What is the standard size for a toilet drainage outlet? What materials can be chosen for toilet drainage pipes?

一、Standard Size of Toilet Drainage Outlet

Typically, the standard size is around 8 cm, while the drainage pipe should use a diameter of 11 cm. However, because different households may purchase different types of toilets, the hole spacing may vary. Therefore, the specific dimensions should be determined based on the actual situation. Regardless of which type of toilet you choose to buy, it is essential to measure the drainage outlet hole spacing beforehand to ensure smooth installation.

二、Materials Available for Toilet Drainage Pipes

1、PVC Pipe

PVC drainage pipes are not very good in terms of heat resistance and freeze resistance, as they contain plasticizers, which can adversely affect users' health and directly harm our reproductive capabilities. Therefore, this type of drainage pipe is generally not recommended for use.

2、PE Pipe

PE drainage pipes are a new type of piping material that can be used for both hot and cold water. They are non-toxic and harmless. Additionally, this material is lightweight and has excellent corrosion resistance and pressure resistance, making it a popular choice for drainage pipes.

3、Aluminum-Plastic Composite Pipe

Aluminum-plastic composite drainage pipes are easy to install and durable, with good bending properties. Many people choose this type of drainage pipe. However, it should not be used for hot water pipes, as it can expand and contract with temperature changes, potentially leading to leaks or water seepage.

4、PP Wound Pipe

This type of drainage pipe is made using a winding process and belongs to the category of plastic pipes. It possesses good rigidity and flexibility. Additionally, its corrosion resistance is also satisfactory, making it widely used for urban sewage discharge.

Summary：This article provides information on the standard size of toilet drainage outlets and the various materials available for toilet drainage pipes. We hope this is helpful to everyone. For more related content, please continue to follow our updates.