Just wondered if my new ball valve for the 3 inch bottom is missing something. I replaced a socket ball valve with a broken handle so this is the first true union valve I have on the pond. When closed no leaks but as I open it water gushes out from top . I screwed it on as tight as I possible could
. Do the unions have a flat rubber gasket and a big o ring? I did see the O rings on both sides. Any ideas to what the problem is?
Thanks