Regulator with Acme nut x 3/8" female flare swivel nut. Built-in excess flow and thermal protection. For use on propane gas grills equipped with a 3/8" flare connection and on Olympian Wave Heaters:. * Connect grill or heater to propane cylinder. * 11 inch w.c. setting. * 1/2 PSI outlet. * 75,000 BTU/ hour capacity regulator.