S&Uuml;A Propane Propylene Regulator Welding Gas Gauges CGA-510 Inlet Fitting, (Connection to Tank) 9/16" - 18 LH Type B-B Outlet Fitting, (Connection to Hose) Max Inlet Pressure: 300 psi - Delivery Pressure Range: 0-15 psi Medium to Heavy Duty Regulators - Body: Forged brass, Bonnet: Chrome plated, UV resistant Composite Knob ***READ THIS BEFORE YOU BUY*** Please check all the Pictures with the Dimensions of the Connectors, and make sure that these Regulator fits your Tanks and Hoses.