Data Sheet

A31A Cryogenic Valve
Product Bulletin
21.1:Cryogenic-Rotary
October 2010
17
Table 12. Fisher A31A Cryogenic-Valve CL150, Reverse Flow, NPS 20 and 24
Coefficients
Valve
Size,
NPS
Valve Rotation, Degrees
10 20 30 40 50 60 70 80 90
C
v
20
208 692 1520 2630 4160 6230 8730 11,220 13,850
K
v
180 599 1315 2275 3598 5389 7551 9705 11,980
F
d
0.090 0.17 0.26 0.34 0.42 0.49 0.57 0.64 0.70
F
L
0.77 0.79 0.81 0.81 0.78 0.73 0.68 0.60 0.52
X
T
0.50 0.53 0.55 0.55 0.51 0.45 0.39 0.30 0.23
C
v
24
322 1080 2370 4080 6450 9670 13,540 17,410 21,500
K
v
277 934 2050 3529 5579 8365 11,712 15,060 18,598
F
d
0.090 0.17 0.26 0.34 0.42 0.49 0.57 0.64 0.70
F
L
0.77 0.79 0.81 0.81 0.78 0.73 0.68 0.60 0.52
X
T
0.50 0.53 0.55 0.55 0.51 0.45 0.39 0.30 0.23