Prevent sewage backflow: It is equipped with a backflow prevention device. Once the drainage pump stops running, the device automatically closes to prevent sewage from flowing back into the inner cylinder and contaminating the already cleaned clothes, ensuring the washing effect and hygiene conditions. Prevent overflow: During the washing process, it can maintain the water level balance. When the drainage pipe or floor drain is blocked, it continues to operate to avoid excessive water level overflow and reduce the risk of property damage. Adapt to various installation environments: It can flexibly adapt to different drainage requirements and types of washing machines. For drum washing machines, drainage requires the drainage pump to overcome the height of drainage, while for top-loading washing machines, they are usually installed for drainage at the bottom; at the same time, it can adapt to high-rise or low-rise residences, without being strictly limited by the position of the drainage outlet., Manufacturer: RUIqun