5Pcs One Way Non-Return Check Valve Aquarium Co2 System Air Pump Fish Aquarium Tube Hose Part Supplies Blue

Package Contents: 5 x Aquarium check valves Product name: Check Valve Material: Plastic Color: Blue Uses: fish tank aquarium. Protect your air pump by preventing backflow of water from the aquarium during a power outage. Place between the air pump in your airlines pipeline and the aquarium water to prevent water from flowing back from the air line. The product is marked with an OUT arrow and is easy to install. It is suitable for standard air pipelines of 4-6 mm. Made of durable plastic.Made of high-quality plastic durable and light weight easy to install and remove can be used with your fish tank for a long time. Note: Small parts are dangerous for suffocation please keep them away from children and pets.