Easy Aqua Double Check Valve

  • Dimensions: 45x20mm
  • Model: R-AY002
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This double check valve prevents the back flow of water, protecting your equipment from water damage.

The patented designed check valve has a screw lock mechanism - this means that rather than pushing tubing onto the check valve, it's screw locked making it very secure. Tubing cannot pop off. As a result we are recommending this product to be used with the Easy Aqua Super Atomisers in particular (see related products below).

Can be used with any CO2 systems and also suitable for air pumps.

by Roy Wadey on 23/7/2014

Ordered three of these for 2 seperate C02 systems after a previous check valve had popped off my inline diffuser resulting in aquarium water leaking down my wallpaper overnight. All three work perfectly (often not the case with check valves) and the screw fitting for the tubing is much more secure than push on types.

by Lee Smith on 23/1/2014

Seems to be working perfectly. The threaded clamps to connect the hoses are excellent and give you extra piece of mind.

by Michal Karpisiewicz on 22/10/2013

Great little piece. Safe to use with high pressure co2 systems and specially with atomizers.

by Roger Banks on 11/2/2013

Easy aqua products are fantastic ,would recommend them to anyone as for aqua essentials top notch

by Andre Jacobs on 12/1/2012

This is an outstanding check valve! I used the valve that came with the TMC CO2 Regulator and Soleniod kit and had noticed the one day that water from the bubble counter managed to back flush into the regulator! Tips: 1) Make sure the bubble counter is not too closely placed to the regulator 2) Don't fill the bubble counter with more water than is needed. 3) Place one of these guys just after the regulator 4) Be paranoid like me and place another check valve just as the airline leaves the aquarium.

Ask a question about this product
Does the arrow point the way the airlow is going? Sorry, probably a dumb question but I haven't used them before :-)


the arrow shows the direction the gas is flowing

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