One way check valve for aquarium air pump
This great one way check valve will prevent aquarium water from flowing back to the air pump during a power outage. This will protect your air pump from damage.
The valve is small and compact and it is made of durable plastic. It is very easy to install.
The valve is compatible with standard aquarium air pipe (tube) of 4mm inner diameter.
Full Length: Approx. 5.3cm(2.1 inch)
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