I am installing a few shut offs.. ball valve type. My question is, do the "lever"s have to be positioned at the top of the valve? Can the be mounted on the side or down... the valves will be installed horizontally.. Thanks.

Turn them any way you need to. Just make sure you can easily reach them and have room to turn them. Also be careful theyare not where they will turned accidentally.

Cool, thanks, that's what I was thinking...