I am stumped. I have an apartment where the bath and kitchen fixture and water heater are all fed by one 1/2" line with a ball valve. Shut off the ball valve and no water goes to any fixture.
I shut the valve off, and the next day I turn on a faucet and there is almost no pressure. Shouldn't the lines stay pressurized over night? There are no water leaks that I can see. None of the fixtures drip. the pressure relief valve on the water heater does not drip.
It seems impossible.