:yes: :yes: :yes:diyorpay said:Useful advice from experience:
Unless you have an emergency, don't experiment with shut off valves over a holiday period. If the valve hasn't been used for a long time, it could be frozen, the washer (if it has one) could be shot etc. You will pay a big premium to get a plumber over the 4th of July holiday if you are in the US.