Como Fish Tank Aquarium Red Clear Plastic Air Pump Check Valves 5 Pcs

I never say that an item is worthless unless it is and these check valves were the worst things that I've ever purchased anywhere, anytime, ever. I have a commercial air pump and these check valves darn near made it stop pumping they're so bad.

When I tried to pull the air hose off these check valves to take them out, they came apart in two separate pieces. Useless! I wouldn't recommend these to my worst enemy. Well , maybe to worst enemy but no one else.

I wouldn't have given them one star but at least they arrived from Hong Kong.

I used these for my 10g air pump and it works great. They stay secure by the piping and they work just as they should. Not flimsy or easily breakable from the way I've handled them so 5 star product for quality and price combo.

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Exactly as described. Worked perfect.

I have used this type of product before and they cracked, these look much more sturdy I am confident they will last.

Also, this is a very important safety feature, don't skip on this, unless you want a flood in your house and dead fish.

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This is a good device to use in conjunction with an air pump. I like the quality of construction and this is a very good price for 5 valves.

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I bought these and they are working as advertised after a month. the water has not once backed in at all.