Prevent backflow: The internal check device automatically shuts off when the pump stops working, preventing sewage from backing up to the inner drum and avoiding soiling laundry Guarantee operation: If the drain pump fails, the washing program will be interrupted or even alarmed, and its normal operation is an important guarantee for the overall performance and life of the washing machine Help with dehydration: After drainage, it maintains a low-pressure environment inside the machine, providing stable conditions for the dehydration process, and improving dehydration efficiency. Emergency drainage: In case of machine failure or power outage, it can be manually started to discharge accumulated water, facilitating users to remove clothes and avoiding damage to clothes due to prolonged soaking. Clothes Dryer Drain Pump Motor ，Compatible For Samsung， B13-6AA01120 DC31-00105A, Manufacturer: GENTERUN