Review on 🔌 Aqua Products BP15 Aqua Group Plug for 1.5 Inch Lines by Cardell Haynes

This appears to be a very well made product, it is the best design I have seen for an exhaust valve. But I don't know what they mean by multi-directional because you can look at it and say you have to blow through the other side of the line and this device leaks water. This creates an airlock and prevents the pipes from freezing. I'm not deducting a point for this issue because I could look at it and tell you how it works before you order it.