JR Products 07-31525 Low Pressure 2 Stage Regulator 25% smaller and lighter than our high capacity regulator; BTU Capacity of 262,500 2nd Stage Relief Mechanism Per UL 144; A higher flow rate in colder temperatures for improved performance; Just like our high capacity regulator; Automatically redirects LP gas vapor flow from an empty designated service cylinder to a reserve cylinder without interruption Green indicator dome changes to red when the service cylinder needs to be filled