Farris Engineering Valve Orifice Areas
1890,1890L Series
Serial # Suffix M
Inlet Size
Vapor
Liquid
1/2
0.089
0.077
3/4
0.089
0.077
Coeff of Discharge : Vap Kd = 0.953
Liq Kd = 0.755
(Use ASME Code Liq Equation)
Certified for Air, Steam, Liquid Service
