Siemens 658-0014 1 1/4" VALVE SIZE, 16 CV, NORMALLY OPEN, ANGLE UNION, 2-6 PSI, EQUAL PERCENTAGESiemens 658 0014 1 1 4" Valve Size, 16 Cv, Normally Open, Angle Union, 2 6 psi, Equal Percentage This Powertop 2 Way Angle Union Valve is designed to control the flow of steam, water and ethylene glycol solutions with normally open action. This valve is 1 1 4" in size, has a flow rate of 16 Cv, a spring range of 2 to 6 psi, and an equal percentage flow characteristic. Other features of this valve include an actuator that can be rotated to facilitate