The check valve goes on the return line between return pump and return inlet.
Aquarium air pipe valve.
10pcs fish tank air line flow control regulator valve aquarium air pump valve.
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Bornfeel plastic one way non return check valves 16pcs aquarium air pump accessories for fish tank air line tube tubing hose pipe fitting clear.
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In a power outage the flapper closes to prevent an aquarium flood.
Bornfeel plastic one way non return check valves 16pcs aquarium air pump accessories for fish tank air line tube tubing hose pipe fitting clear 4 6 out of 5 stars 219 7 49 7.
10 pcs aquarium one way non return check valve fish tank co2 system air pump red.
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While check valves are best known for their role in air pumps they can also be used for co2 lines and sumps.
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Simply place the check valve on your air pipe and your aquarium is protected from the siphon effect whether you are there or not.
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Want to know how to install a check valve for an aquarium.
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