171H-10306 | 2W 1/2", 6.3Cv ball valve assy, chrome-plat brass ball, brass stem, 2-pos NO SR | Siemens

This 599 Series 2-way ball valve with a 2-position control, normally open, fail safe actuator assembly, providing 200 psi close-off, is used to control hot or chilled water and up to 50% Glycol solution in convectors, fan coil units, unit conditioners, radiation and reheat coils. This 1/2-inch valve is 6.3 Cv, equal percentage flow characteristic, with chrome-plated brass ball and brass stem, and an operating handle that can manually operate the valve in the event of power failure.