Siemens 254-01135 MZ SERIES 3W VALVE ASSEMBLY, ANSI 250, WATER, LINEAR, 1/2", FXF, 1.6CV, EL/MECHSiemens 254 01135 MZ Series 3W Valve Assembly, ANSI 250, Water, Linear, 1 2", FxF, 1. 6Cv, El MechThis Valve Assembly is a Powermite 599 MZ Series, ANSI Class 250, 3 W, WM, Linear, 1. 6 Cv, FxF, 1 2", 200 N, Bronze Body, Includes SSB MZ Series Elect Mech Actuator, Used for control of hot or chilled water for convectors, fan coil units, reheat coils This Valve Assembly is a Powermite 599 MZ Series, ANSI Class 250, 3 W, WM, Linear, 1. 6 Cv, FxF, 1 2",