YKMYXZ, Duct Vent Block, Pipe Connector with Non-Return Shutter, Gate for Dryer Hose (100mm)

WIDE RANGE OF SIZES】Available in sizes ranging from 80mm to 200mm, this check valve can be easily installed on various round pipe systems in the kitchen, providing efficient ventilation and counterflow. PVC Material】Made of PVC, this duct backflow blocker is extremely durable, which ensures its effectiveness in reverse watering and keeps it at bay. Application】Suitable for bathroom fans, this check valve effectively prevents air and water backflow, keeping the ventilation system in optimal working condition. EFFECTIVE FUNCTION】Designed specifically for reverse irrigation, this reverse draft blocker plays a crucial role in maintaining proper air circulation and preventing unwanted elements from entering the living space. It is useful for performing various functions, including home ventilation, passive fireplace ventilation, air conditioning, positive pressure ventilation and drum dryer ventilation.