Anybody who owns a magnum 350 use these quick disconnecting valves. The reason I ask is because taking apart these filters for cleaning take a long time for me to do. That is why I need the disconnecting valves so that I can remove the canister without the hose and intake and outlet tube attached to it. Also is there any diffrence between the single disconnecting valves and the double disconnecting valves because there sure is a big diffrence in price at my lfs.