Siemens 257-02067B MT SERIES 3W VALVE ASSEMBLY, ANSI 250, LINEAR, 1/2", FXF, 1.6CV, 3-8PSI SR, PNUSiemens 257 02067B MT Series 3W Valve Assembly, ANSI 250, Linear, 1 2", FxF, 1. 6Cv, 3 8psi SR, PnuThis Valve Assembly is a Powermite 599 MT Series, ANSI Class 250, 3 W, Mix, Linear, 1. 6 Cv, FxF, 1 2", Bronze Body, Includes MT Series 2 In Pneumatic Actuator with 3 8 psi SR, Used for control of hot or chilled water for convectors This Valve Assembly is a Powermite 599 MT Series, ANSI Class 250, 3 W, Mix, Linear, 1. 6 Cv, FxF, 1 2", Brass Body,