Siemens 599-10602-1.9-4.7 6W BALL VALVE 1", A=1.9CV, B=4.7CV, 58PSI CLOSE-OFF, FEMALE NPTSiemens 599 10602 1. 9 4. 7 6W ball valve 1", A=1. 9Cv, B=4. 7Cv, 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 = 1. 9 Cv and Source B = 4. 7 Cv, linear flow characteristic and chrome plated brass ball and stainless steel stem and Cv washers. There is a handle for