I suspect my small suction leak coming from this pool/spa diverter valve. I am not sure if P60305 is the part number because I can't find it online but it's imprinted on the cover. Anyway, Just wanted to check on the parts inside, I removed the 4 screws and lift the cover up and water just spill out and doesn't seem to stop (I let all water out of the line by openning the strainer lid). I didn't want to go further to mess up anything because this valve and another exact one next to it (to divert the return water to pool/spa) are in a hole in the ground next to the spa. Replacing it doesn't seem possible without major work. So my question is why is there water in there, is it below water line? If I just let water flow out, will it stop at some point? and what if dirt get inside?