Siemens MXG461.15-0.6U MAGNETIC, 1/2" VALVE, 2-WAY OR 3-WAY, 0.7 CV, 0 TO 10V CONTROL, W/ NPT UNIONSSiemens MXG461. 15 0. 6U Magnetic, 1 2" Valve, 2 way or 3 way, 0. 7 Cv, 0 to 10V control, w NPT unions This MX Control Valve with Electronic Modules is designed for 0 to 10V control of chilled water and low pressure hot water, especially in HVAC systems. The valve can be configured for straight through or 3 Way applications and has 1 2" line size, 0. 7 Cv and 72 psi close off. This valve has 1000: 1 resolution and a positioning time is 1 second,