Combination full port shut-off ball valve and swivel companion flange for most Taco circulators. The simple quarter turn, lever handle operation allows for easy isolation, removal and service of circulators without draining the system. Features positive shut-off with leak free design, 360 deg (degree) rotation, and full port ball valve for unrestricted flow. Includes bolts and nuts. Rated for 240 F (degree Fahrenheit), 150 psi (pounds per square inch).