Brady Prinzing Ball Valve Lockout, Small, for 1/2"-2-1/2" Outside Pipe Diameter, Red

the handle on the valve has a 3/4 inch offset not allowing the x part to slide in completely how can I fix this

Will this accept 5/16 inch lock shackle width

Can this be used for on and/or off position?

I have a valve that is attached to an air line comimg straight down a wall. Can this be used when the back of the valve is flush to the wall?