Siemens 255-01121 MZ SERIES 2W VALVE ASSY, ANSI 250,NO, LINEAR, 1/2 IN FXF, 1.6 CV, EL/MECHSiemens 255 01121 MZ Series 2W Valve Assy, ANSI 250,NO, Linear, 1 2 In FxF, 1. 6 Cv, El MechThis Valve Assembly is a Powermite 599 MZ Series, ANSI Class 250, 2 W, NO, Linear, 1. 6 Cv, FxF, 1 2 In, 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, 1. 6 Cv, FxF, 1 2 In, 200