Siemens 599-03109 FLOWRITE 1/2" 2-WAY VALVE, NO, 1.6 CV, EQUAL PERCENT, SS TRIM, FXF, ANSI 250Siemens 599 03109 Flowrite 1 2" 2 Way Valve, NO, 1. 6 Cv, Equal Percent, SS Trim, FxF, ANSI 250Flowrite, 1 2" 2 Way, 1. 6 Cv, Equal Percentage, NO, FF, Bronze Body, SS Trim, ANSI Class 250, Designed to work with pneumatic or electronic actuators, Direct coupled universal bonnet, No tools required for installation. Flowrite, 1 2" 2 Way, 1. 6 Cv, Equal Percentage, NO, FF, Brass Body, SS Trim, ANSI Class 250, Designed to work with pneumatic or electronic