Siemens 254-01129 MZ SERIES VALVE ASSEMBLY, ANSI 250, 2W, NO, LINEAR, 3/4", FXF, 6.3CV, EL/MECHSiemens 254 01129 MZ Series Valve Assembly, ANSI 250, 2W, NO, Linear, 3 4", FxF, 6. 3Cv, El MechThis Valve Assembly is a Powermite 599 MZ Series, ANSI Class 250, 2 W, NO, Linear, 6. 3 Cv, FxF, 3 4", , 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, 2 W, NO, Linear, 6. 3 Cv, FxF, 3 4", ,