171C-10600-0.5-0.3 | 6W ball valve 1/2", A=0.5Cv, B=0.3Cv, 58psi close-off, female NPT, 0-10 V NSR | Siemens

This 1/2 inch 599 Series 6-way ball valve with a 0-10 Vdc control fail-in-place actuator assembly is used to control hot or chilled water and up to 50% Glycol solution in chilled/heated beams and other four pipe systems using a single valve and actuator. 58 psi close-off with 0% leakage. Source A = 0.5 Cv and Source B = 0.3 Cv, linear flow characteristic and chrome-plated brass ball and stainless steel stem and Cv washers. There is a handle for manual operation of the valve in the event of power failure.