Siemens 599-03163 FLOWRITE 1/2" 2-WAY VALVE, NO, 1.6 CV, EQUAL PERCENT, BRASS TRIM, FXF, ANSI 250Siemens 599 03163 Flowrite 1 2" 2 Way Valve, NO, 1. 6 Cv, Equal Percent, Brass Trim, FxF, ANSI 250 Flowrite, 1 2" 2 Way Valve, 1. 6 Cv, Equal Percentage, NO, FF, Brass Trim, ANSI Class 250, Designed to work with pneumatic or electronic actuators, Direct coupled universal bonnet, No tools required for installation. Additional Information Valve Body StyleStroke Globe Port Configuration2 Way Normally open End ConnectionFxF Connecting threadNPT, direct