We have purchased 3 of these now for the Weber Q2200 grill and all of them have broken or stopped working after just a couple of months use.  There is a plastic piece inside the part that screws onto the gas tank that breaks and comes apart in pieces.  When this happens it won't screw onto the tank correctly and therefore the grill won't work.  We won't be buying anymore Weber hoses, even though we love our Weber grills.  It is such a shame that these aren't better quality.