Review on 🐠 Pawfly Plastic One Way Non-Return Check Valve for Aquarium Air Pump by Wendy Johnson

I received a package of 6 transparent valves. From the bag, 2 were obviously defective; I could easily suck air through the valve no matter which side I connected the hose to. I needed 2 for my project so I chose the 2 that seemed to be the best quality from the others and connected them and after a few minutes I noticed water dripping from the other end of the valve (and yes it correctly connected). I grabbed the second hose and gave it a little shake, noticing that water was slowly dripping through it as well. The remaining 2 valves were just as bad. Don't buy them. Buy something from a big brand or your local water supply store, don't buy this nameless crap unless you need a leak or a blocked air pump.