Farris Engineering Valve Orifice Areas

2856 Series

Serial # Suffix  E1
Inlet Size
Vapor
Liquid
3/4"
0.164
0.098
1"
0.281
0.173
1 1/2"
0.657
0.390
2"
1.048
0.691

Coeff of Discharge : Vap Kd = 0.953
Liq Kd = 0.64 (Use Non Code Liq Equation)

Certified for Air, Steam Service