Siemens 366-02057 MT SERIES 2W VALVE ASSY ANSI 250 NO MOD EQ PCT 1/2" AFXUM 2.5CV 24V FLOAT SRSiemens 366 02057 MT Series 2W Valve assy ANSI 250 NO Mod Eq Pct 1 2" AFxUM 2. 5Cv 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 open assembly has a 2. 5 Cv flow rate, stainless steel trim, AFxUM connection, and a modified equal percentage flow characteristic. The assembly is ANSI Class 250 with a Class IV (0. 01% of Cv)