Patent ID: 8191574
Filing Date: 2012-06-05
Classification: F16K,F17C,Y10T

Abstract:
1. A visual indicator assembly for an isolated stem control valve contained in a housing of an air tank, the visual indicator assembly comprising: a rotatable handle member adapted for operative connection to the isolated stem control valve contained in the housing of the air tank to open and close the control valve, without axial movement of the rotatable handle member; an “OFF” indicator visible with the control valve in a closed condition; and an“ON” indicator non-visible with the control valve in a closed condition, the “ON” indicator movable to become visible and the movement of the “ON” indicator obscures the “OFF” indicator upon rotation of the handle member to adjust the control valve to an open condition, wherein the “OFF” indicator is contained on the housing of the control valve adjacent the rotatable handle member operatively connected to the control valve therein.