Small and compact
100% Brand new and high quality
Protect you air pump by preventing aquarium water from back siphoning during a power outage.
Made of durable plastic
Great one way check valve for aquarium air pump
Compatible with standard aquarium air pipe of 4mm inner diameter
It's easy to install
Full Length: Approx.45mm x 15mm x4mm (Length*Diameter*Tubule diameter)
Color: Black
