Glass CO2 Check Valve Red Freshwater Planted Aquarium Aquascaping ADA Style

Description

Glass CO2 Check Valve
Prevents water back-flow / siphon.
Made of crystal clear glass.
Easy to installation.
Attractive design.
Glass Check Valves are designed to handle high pressure and prevent aquarium water from siphoning. Backflowing water can cause permanent damage to air pumps and CO2 regulators. Unlike plastic CO2 check valves that deteriorate due to gas pressure, its high-quality glass design allows for long-term use without having to be replaced every few months. Cost effective yet aesthetically pleasing, this CO2 Glass Check Valve can save over a hundred dollars (or more) of equipment.
Instructions
Because the item is made from glass it is inherently delicate, and extra care needs to be taken when attaching the tubing. It is recommended that the tubing is first warmed in boiled water to soften the tube when pushing it on the diffuser inlet.
This unit uses gravity to operate, it must therefore be aligned in an upright/vertical position - as shown in the picture.
Looking at the valve, you will notice that one end is slightly more tapered (narrower) than the other. It may also have a faint line running about around the tapered section - this is the inlet and should be at the bottom. To verify; while holding the valve in a vertical position, you should not be able to blow down the outlet. If you can, you've got it the wrong way around.
Push CO2 tubing onto corresponding inlet/outlet as far as you can.
Tip: Softening the tubing in freshly boiled water will make it easier to push the tubing onto the valve.