10Pcs One Way Non-Return Check Valve Aquarium Fish Tank CO2 System Air Pump

Specifications:
Great one way check valve for aquarium air pump.
Protect you air pump by preventing aquarium water from back siphoning during a power outage.
Small and compact.
Made of durable plastic.
It's easy to install.
Compatible with standard aquarium air pipe of 4mm inner diameter.

Item Name: One Way Check Valve
Quantity: 10Pcs
Material: Plastic
Length: 5.3cm/2.09" (Approx.)
Inner Diameter: 4mm/0.16" (Approx.)

Notes:
Due to the light and screen setting difference, the item's color may be slightly different from the pictures.
Please allow slight dimension difference due to different manual measurement.

Package Includes:
10 x One Way Check Valves