Siemens 254-01138 MZ SERIES 3W VALVE ASSY, ANSI 250, WATER, LINEAR, 3/4", FXF, 6.3 CV, EL/MECHSiemens 254 01138 MZ Series 3W Valve Assy, ANSI 250, Water, Linear, 3 4", FxF, 6. 3 Cv, El MechThis Valve Assembly is a Powermite 599 MZ Series, ANSI Class 250, 3 W, WM, 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, 3 W, WM, Linear, 6. 3 Cv, FxF, 3 4", ,