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Question:

Which side is open for a pipe main shutoff valve?

I just want to ask do i turn clockwise or counterclockwise in the pipe main shutoff valve to turn on the water supply?

Answer:

left to open an right to close piece of cake. (grate now i want some cake)
You turn the valve counterclockwise to open or turn on the water. You would turn it clockwise to shut the water off. Think of it as you would as if you were turning a screw. Right is tight. Be sure you open the valve all the way so the packing in the valve is tight, some valves leak a little, especially old ones, if the valve is only opened partially.It pays to work a valve occasionally to keep it supple, otherwise the packing or rubber washers dry out and start to leak. When you are operating a ball valve, one with a flat handle that only turns 1/4 turn or 90 degrees, when the handle is going in the direction of the pipe, the water is on. When the handle is going across the pipe, the water is off.

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