The 8100/8111 two-piece, brass body, full-port ball valve is designed with free-floating flanges for easy alignment with circulator pump flanges to simplify installation. The 8100 is suited for threaded-end valves and the 8111 is for soldered end valves. The 8100/8111 is available in sizes of 3/4, 1, and 1-1/4 in. and is rated at 600 WOG/150 SWP and 350°F maximum temperature.