Siemens 290-05980 VALVE ASSY 2W NO 2-1/2" 63CV EQ PCT BRONZE TRIM FLANGED FLOAT EL-HYDRL ACT NSRSiemens 290 05980 Valve assy 2W NO 2 1 2" 63Cv Eq Pct Bronze Trim Flanged float El Hydrl Act NSRFlowrite 599 Series Valve Assembly features a floating control, non spring return, 24 Vac electro mechanical actuator with 3 4 inch stroke. The 2 way, normally open, 2 1 2 inch, 63 Cv valve assembly with 3 4 inch stroke is ANSI Class 125 and has an equal percentage characteristic, bronze trim, and flanged end connections. Flowrite 599 Series Valve Assembly