Sell [TAT] 5pcs Home Fish Aquarium Air Pump Check Valve One Way Non-Return Check Valve HGD best price

Features: Safe and durable products, great one way check valve for aquarium air pump. Protect your air pump by preventing aquarium water from back siphoning during a power outage. Place in your airline tubing between your air pump and aquarium water to prevent water returning down the air line. Made of durable plastic,small and compact,It's easy to install. Compatible with standard aquarium air pipe of 4mm inner diameter Perfect accessories for better life. Specifications: Material: Plastic Dimension: As the pictures shown Color: Red,Black Quantity: 5pcs Note: Please allow minor error due to manual measurement. The colors may be a little difference for the different monitor display.