Valve appears to be stuck in the open position--same oil flow whether stem in or out. I can feel spring tension. If I turn the knob CLOCKwise, the stem will advance into the valve body ...

Representing the flow capacity of full-bore ball valves in the wide-open position presents some challenges. The flow coefficient is very sensitive to whether or not associated test piping frictional ...

the valve is open and water will flow. If the lever is perpendicular to the pipe, the valve is closed. If you were to cut a ball valve open, you would see that the lever is connected to a ball ...

the valve is open and water will flow. If the lever is perpendicular to the pipe, the valve is closed. If you were to cut a ball valve open, you would see that the lever is connected to a ball ...