Siemens 258-02070 MT SERIES 3W VALVE ASSY, ANSI 250, LINEAR, 3/4", FXF, 6.3 CV, 8-13 PSI SR, PNUSiemens 258 02070 MT Series 3W Valve Assy, ANSI 250, Linear, 3 4", FxF, 6. 3 Cv, 8 13 psi SR, PnuThis Valve Assembly is a Powermite 599 MT Series, ANSI Class 250, 3 W, Mix, Linear, 6. 3 Cv, FxF, 3 4", , Bronze Body, Includes MT Series 2 In Pneumatic Actuator with 8 13 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, 6. 3 Cv, FxF, 3 4", , Brass Body,