[punchclock]

Hello,

My toilet has an issue. Middle of the night, the plastic screw fitting on the tank end of the supply line burst (literally split in half around the circumference). I replaced the line, and my tank wouldn't fill. I opened the valve with the line removed from the tank. No water. I removed the line from the valve, and opened the valve. Water! I replaced the line onto the valve, and opened the valve. Water! I re-attached the line from the valve to the tank. The tank began to fill, seized, and stopped. Reversed the operation, back to the valve, re-attached to the tank, slowly opened the valve about 1/4 the way, tank slowly filled. Twice. Then nothing. Again, removed and replaced line, and replaced ballcock valve. Still, I can't open the angle valve all the way without the ballcock seizing/stopping, and the only remedy is to take the line off at the valve. Is there some kind of pressure valve in my line I am unaware of? Any hints?