Looks like I tightened the Union nut to far last time around. As the pump turned on today water was spaying out from a split in the union nut. I would ideally like to buy a spiit nut replacement. Was wondering though how I find the correct size? I see part numbers on my Google searches but haven't seen anything that references my particular pump. My pump by the way is a Pentair 3HP VS 011028.