Siemens 261-02024 VALVE ASSY NC 1/2" 2.5CV FXUM SS TRIM ELECT ACT NSR MOD 0-10 VSiemens 261 02024 Valve assy NC 1 2" 2. 5Cv FxUM SS Trim Elect Act NSR Mod 0 10 V This Powermite 599 MT Series Normally Closed Valve Assembly features an electronic actuator with 24 volts AC operating voltage, Modulating 0 10 Volts and Fail in place. The assembly is ANSI Leakage Class IV, has a stainless steel trim and a female to union male connection. This assembly has a flow rate of 2. 5 Cv, and a line size of 1 2". Additional Information Valve