PVC One-way Check Valve 20 Pieces for Aquarium Air Pump

General Description Made of high quality PVC, this check valve is sturdy, durable and designed for a long service life. It is essential to protect your air pump and prevent damage caused by water backflow. Technical specifications Material: PVC Quantity: 20 pieces Use This check valve is used to prevent water from entering the air pump when the air pump is stopped. It helps prevent overflows and damage to equipment in the event of a power outage or pump shutdown.