171C-10205 This Powermite 599 Series 2-Way ball valve with GDE161.1P actuator is used to control hot or chilled water and up to 50 0lycol solution in convectors, fan coil units, unit conditioners, radiation and reheat coils. This valve has 1/2 INCH Line Size, 1.6 Cv, Static pressure of 360 psi and operating handle can manually operate valve in the event of power failure.