Farris Engineering Valve Orifice Areas

3800 Series


Orifice Label
API Effective Area
Actual ASME Area
D
0.110
0.150
E
0.196
0.226
F
0.307
0.371
G
0.503
0.559
H
0.785
0.873
J
1.287
1.430
K
1.838
2.042
L
2.853
3.170
M
3.60
4.00
N
4.34
4.822
P
6.38
7.087
Q
11.05
12.27
R
16.0
17.78
T
26.0
28.94
A
full bore
0.719
1
full bore
1.767
2
full bore
2.953
3
full bore
6.605
4
full bore
11.50
6
full bore
26.07
8
full bore
45.66
For Super Capacity Sizes ie > 8" inlet please contact our offices
Coeff of Discharge : Vap API Nozzle ie D-T = 0.954
Vap Full Bore ie # 1 - # 8 = 0.801
Liq API Nozzle ie D -T = 0.869


Certified for Air and Liquid Service