The manual changeover valve is used when an existing 30mbar system is in use with an existing non refillable bottle and you wish to add in a gaslow refillable bottle to the system and have the ease of use a manual changeover brings
This unit simply screws on to your 30mbar regulator and allows you to reconnect your existing hose and (with an additional hose) turn your system into a manual changeover with built in leak detection and low-level indicator.