Quote Originally Posted by P.E.N.G.U.I.N.
One-way valves should come standard on pieces, PERIOD! It's so frustrating to slip in your self-control and cough your smoke back through the pipe and waste a fucking bowl!
What you are referring to is called a check valve... I know of none that are small enough... Also it would have to be spring loaded as water will escape a regular check valve because there is not enough back pressure of water to close it... Also if it did close a small amount would escape first... I will look in Home Depot for a viable solution and post it if I find it...