"Loss of backflow to prevent the washing machine from designing the washing pipe drainage seal. To inform the odor and reduce the smell of the sewer at home. Two perfectly designed drainage systems, connected to the sink and washing machine, with reasonable and efficient space saving. The unlockable open opening makes the water flow faster, the drain is soft without clogging, and the safe and efficient pipeline is maintained. The sealing is very good: multiple distributed sealing ring, silicone material, brass material, closer, transformed and sealing transactions, it is not easy to deform when pressed. Large-scale applications are suitable for kitchen, bathroom, garage, basement to reduce sewer blockage and prevent odors. Every family needs this. You can use anti-invasiveness, deodorant, powder protection, drain/floor pipe, Durable ABS material, elastic molding and flexible biological products use silicone, can connect multiple pipes, suitable for T-panels, suitable for bell shapes,