AUTOMATIC CHANGEOVER UNIT FOR TWIN GAS BOTTLES As an option you can add an automatic change over unit GCORE92 to the top of your EN1949 regulator. To fit this unit you will need one pigtail for each of the bottles in use. W20 male threaded inlets from bottle pigtails and W20 female nut to connect to regulator.
This high quality italian made automatic changeover head comes with MxFxM W20 connections it allows you to have 2 bottles connected and when 1 runs empty it then automatically changes over the supply to the next full bottle. It changes from the green to red colour as seen in the picture when it changes to the second bottle to indicate the change has occurred.