Siemens 599-10602-4.7-4.0 6W BALL VALVE 1", A=4.7CV, B=4.0CV, 58PSI CLOSE-OFF, FEMALE NPTSiemens 599 10602 4. 7 4. 0 6W ball valve 1", A=4. 7Cv, B=4. 0Cv, 58psi close off, female NPT This 1 inch 599 Series 6 way ball valve is used to control hot and chilled water and up to 50% Glycol solution in chilled heated beams and other four pipe systems using a single valve and actuator. Source A = 4. 7 Cv and Source B = 4. 0 Cv, linear flow characteristic and chrome plated brass ball and stainless steel stem and Cv washers. There is a handle for