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Fresh 32++ Gas Valve Open Position

Fresh 32++ Gas Valve Open Position. I'm looking for something where it's blindingly obvious that somebody has left the gas in the open position (gas is flowing) the handle (lever) will be parallel with the pipe, when it is closed (gas not flowing) the handle (lever) will be. In the open position (gas is flowing) the handle (lever) will be parallel with the pipe, when it. Why not just use a ball valve?