The Siemens Building Technologies Valve Bodies | FLOWRITE Series, 599-01120, is designed to work with pneumatic or electronic actuators. This 1/2" 2-Way valve body has a 1.0 Cv flow coefficient, a modified equal percentage flow characteristic, and a bronze body with brass trim. It is rated for ANSI Class 250 and has a medium temperature range of 35 to 250°F.