10pcs Aquarium One Way Non-Return Check Valves Co2 System Air Pump Fish Tank

• 100% Brand new and high quality
• A Non-Return Check valve is an essential accessory when setting up an air pump for your aquarium.
• Due to gravity water will always try to find its own level,
• which means that if your air pump is placed lower than the water level, you risk flooding in the event of a power outage.
• The addition of an inexpensive one-way non-return check valve can save you all the hassles of your aquarium flooding.
• They are designed to only allow flow in one direction, therefore they allow the pump to push air to the aquarium but do not allow water to flow back from the aquarium to the pump.
• Full Length: Approx.45mm x 15mm x4mm (Length*Diameter*Tubule diameter)

Feather:
1.Safe and durable products for your tank
2.Great one-way check valve for aquarium air pump
3.Protect you air pump by preventing aquarium water from back siphoning during a power outage.
4. Small and compact
5.Made of durable plastic
6.It's easy to install
7.Compatible with standard aquarium air pipe of 4mm inner diameter

Package Included:
10pcs one way check valves