JR Products 07-30375 RV Excess Flow POL Regulator:Combines both a high pressure first stage and a low pressure second stage regulator into one unitIdeally designed for RV applications, these regulators ensure a smooth and continuous flow of gas to all appliancesZinc Die CastMolded Rubber DiaphragmUL Approved2nd Stage Relief Mechanism Per UL 144Adjustable Screw and Dust Cap DesignPowder Coated This product ships in approximately 1 days