Mr Heater® F273719 Propane High Pressure Regulator, P.O.L. x 1/4" FPTPropane high pressure regulator is most commonly used on torches, fish cookers, smokers, or other high pressure appliances. Full flow soft nose P. O. L. x 1 4in Female Pipe Thread Most commonly used on torches, fish cookers, smokers, or other high pressure appliances Range of 1 20 PSI Zinc construction Solid brass fittings. WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California