Ziss Premium Air Valve

This product is solid. I use them on every air line I run in my fish room. Great control and amazing price.

This valve is probably the best I have found. And I've been involved in the aquarium hobby since about 1970. So that's saying a lot. Of course I haven't used every brand. But when you find one that you like there is no reason to look any further. The functionality is very well. Because the threads are fine threading they are easy to finely adjust. And there is no air flow restriction when fully open. The only problem, which is relative is that they are just a little hard to turn. But once they are set there is not really any reason to change them under most circumstances.

Most resistant and reliable valve you can get. Very versatile, great for air or water

Way better quality than any other I have tried.

Everything I buy from aquarium co-op is reasonably priced, arrives on time and is total quality. Thank you