This 599 Series 2-way ball valve 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 10 Cv, full-port valve without flow characterizer insert, with chrome-plated brass ball and brass stem, and an operating handle that can manually operate the valve in the event of power failure.