Free
The outer thread is 7/8-14 tooth Unf left thread, and the inner thread is 1 inch -20 fine thread. Threads are American standard threads, suitable for American, Canadian cylinders, or parts of New Zealand and Australia gas tanks. Capacity: 80000-150000BTU/ hours Working temperature: -40 C - + 55 C Import: 25-250PSIG Exports: 2.5PSIG-20PSIG