Siemens 366-02003 MT SERIES 2W VALVE ASSY ANSI 250 NC MOD EQ PCT 1/2" FXUM 0.63CV 24V FLOAT SRSiemens 366 02003 MT Series 2W Valve assy ANSI 250 NC Mod Eq Pct 1 2" FxUM 0. 63Cv 24V float SR This Powermite 599 MT Series Valve Assembly features a 24V, spring return, electro mechanical actuator with floating control. The 1 2 in. line size, 2 way normally closed assembly has a 0. 63 Cv flow rate, brass trim, FxUM connection, and a modified equal percentage flow characteristic. The assembly is ANSI Class 250 with a Class IV (0. 01% of Cv) leakage