The game has an overload of cut scenes which stop the flow.

A hose with a nozzle or a gun on the end means you can control it and stop the flow, instantly leading to less wastage.

I twisted it quickly and using a table knife as a tourniquet between wound and shoulder managed to stop the flow.

If the plaques break loose, they can cause blockages in arteries, stopping the flow of oxygen-carrying blood, and leading to a heart attack or stroke.