Have a gate valve that turns on water to an outdoor spigot. I can't get it to turn on, no matter how many turns of the handle. In either direction, it just turns, turns and turns without opening or closing. NOW, is this gate valve junk ? any tricks to get it working ? what do you recommend as a solution if I replace it ? Do those sharkbite fittings really work or do I have to solder a solution. The valve is BEHIND my water heater so it is extremely difficult to reach to solder. thanks !