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Aquarium Check Valves
Product Function
When you turn off the air pump to stop the oxygen delivery, if you do not install a check valve on the air pipe, the water in the fish tank will produce a siphon reaction and damage the air pump.
Place these air pump check valves in your airline tubing between your air pump and aquarium water to prevent water returning down the air line.
Key Features
- They are made of plastic material for long time use.
- Suitable for fish tank oxygen system, no noise.
- Includes: 10pcs check valves.
Product Details
About Size of Airline Tubing
Fits standard aquarium airline tubing with inner diameter about 4mm.
Air Pump Accessories
Air pump accessories for fish tank oxygen system. To prevent water from flowing back into the air pump. NOT suitable for high-pressure systems to avoid crack and leak.
Not Easy to Fall Off
Installed in the correct way, no noise will be generated during operation.
Chris
2025-07-27 10:34:26
The only issue iv had is one didnt work but thats okay i only needed like 2 of them, also somtimes they wistle but that may not be the case on a pump. I use a water pump that draws air into the water stream, no pump it just sucks ambient air in but if the pressure goes positive it will backflow water and that i cant have happen so i got these valves. Five stars
Rick889764
2025-06-30 14:10:54
Good product...great price!Highly recommend!
Dirt-road
2025-06-27 13:45:11
WORKS GREAT IN OUR AQUARIUM
Gustavo Bauer
2025-06-20 18:40:56
They give peace of mind to some extent. Not a big fan since they do restrict air flow. Put them on after 2 years of just pump and line. Using the tip of an incense stick opened up all 3 valves. They were tough to push in the air line.
Chad
2025-06-13 14:29:01
Works like they should! No complaints
Buyer34
2025-06-10 10:21:51
Works well.
Joshua Barker
2025-03-04 10:24:33
Half the check valves were completely stuck closed. For the ones that did allow some type of flow through, you have to keep an eye on them because the airline will slip off at some point due to the way the stems are designed as the stem has no barb and just gradually gets fatter which results in constant pressure pushing the airline off the stem. I guess you could glue your airlines on and these check valves (the ones that aren't stuck closed) would work just fine, but I'd recommend just buying a different brand that has at least 1 barb on the stem to keep the airline on rather than a sloped stem as you risk flooding your floor if one of these slip off while you aren't watching.
Neil in Morgan Hill
2024-12-14 15:20:42
Nice quality. I am impressed.
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