Siemens 277-03180 2W VALVE ASY, NC, 1/2", 1 CV, EQ PERCENT, BRASS, FXF, 8" PNEUMATIC ACTUATORSiemens 277 03180 2W Valve Asy, NC, 1 2", 1 Cv, Eq Percent, Brass, FxF, 8" Pneumatic Actuator Flowrite 599 Series Valve Assembly features a 8 inch pneumatic actuator with 5 psi span. The 2 way, normally closed, 1 2 inch, 1 Cv valve assembly is ANSI Class 250 and has an equal percentage characteristic, brass trim, and female x female end connections. Additional Information Valve Body StyleStroke Globe Port Configuration2 Way Normally closed End