Bought one of these a couple of weeks ago when Bus Depot  had them on sale. Installed it yesterday, feeling kinda like I've been chumped here. Unless I'm missing something, doesn't look like this thing works all that well with the Westy propane tank set up. First, significant bending of the lines from the regulator are required to get this "T" in place. Once it is place, the two connections could never be used at the same time ,unless you remove the guard from the bottom of the tank. My main interest in this thing was the ability to hook up a 1 lb bottle, which I did and it works-sort of. My tank is empty, but with a full 1lb bottle hooked up I was able to light the stove, so I know I'm getting propane. But when I disconnect the bottle, I got a huge discharge of propane from the direction of the tank (not the bottle). Read in the archive of folks being happy with this thing,  but right now I'm feeling like I threw about 60 bucks away.   Jeff