Abstract: A waterproof gate includes a door frame, two side rails mounted on two opposite sides of the door frame, a waterproof door movably mounted between the two side rails, at least one sealing gasket mounted on the waterproof door, and at least one waterproof strip mounted between the waterproof door and the door frame. Thus, when the water level exceeds a preset value, the waterproof door is moved down to press the ground tightly so that the waterproof door blocks the door frame so as to provide a waterproof effect to the door frame.

Abstract: A waterproof gate includes a door frame, two side rails mounted on two opposite sides of the door frame, a waterproof door movably mounted between the two side rails, at least one sealing gasket mounted on the waterproof door, and at least one waterproof strip mounted between the waterproof door and the door frame. Thus, when the water level exceeds a preset value, the waterproof door is moved down to press the ground tightly so that the waterproof door blocks the door frame so as to provide a waterproof effect to the door frame.

Abstract: An anti-reverse device includes a handle, a blocking member secured on the handle, a fixing plate mounted on the handle, and an adjusting sleeve movably mounted on the handle and abutting the fixing plate. Thus, the fixing plate is fixed on the flange of the toilet bowl, and the blocking member is fixed on the draining port of the toilet bowl to lock the anti-reverse device onto toilet bowl so that the blocking member can block the draining port of the toilet bowl closely and tightly to prevent the waste water from flowing back from the draining port of the toilet bowl due to an irregular pressure condition such that the waste water is stopped and will not flow outward from the toilet bowl.

Abstract: A floor drain cover includes a draining frame, a net-shaped disk mounted in the top wall of the draining frame, a fixing bracket mounted on the draining frame, a movable lid pivotally mounted on the fixing bracket and movable relative to the draining frame, and a rubber pad mounted on the movable lid and movable to seal the bottom wall of the draining frame. Thus, when the ambient waste water in the floor drain flows toward the draining frame, the movable lid is pressed by the pressure of the ambient waste water so that the movable lid moves the rubber pad to seal the bottom wall of the draining frame, thereby preventing the ambient waste water in the floor drain from flowing backward, and preventing the floor from being contaminated by the ambient waste water.