Siemens 258-02057C MT SERIES 2W VALVE ASY, ANSI 250, NO, MODEQPCT, 1/2", AFXUM, 2.5CV, 8-13PSI SRSiemens 258 02057C MT Series 2W Valve Asy, ANSI 250, NO, ModEqPct, 1 2", AFxUM, 2. 5Cv, 8 13psi SRThis Valve Assembly is a Powermite 599 MT Series, ANSI Class 250, 2 W, NO, Modified Eq Pct, 2. 5 Cv, AFxUM, 1 2", 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, 2 W, NO, Modified Eq Pct, 2. 5 Cv, AFxUM, 1 2",