Data Sheet

Control-Disk NPS 14-24 Valve
D103471X012
Product Bulletin
51.3:Control-Disk NPS 14-24
October 2013
7
Pressure Drops
Pressure drop limits of any given valve are based on
valve body, and trim material limits. To find the
appropriate pressure drop limitation, choose the
desired valve size and temperature range. Then search
table 4 for body limitations and table 5 for trim
limitations. Information on limits for S31254, CW2M,
M35-1 and other alloy constructions can be obtained
by contacting your Emerson Process Management
sales office. The lowest number from the tables is the
appropriate limit. The tables for both trim and body
limits must be consulted.
Table 4. Maximum Allowable Shutoff Pressure Drops (Valve Ratings) Based on Carbon Steel and Stainless Steel Valve
Types (The tables for both trim and body limits must be consulted.)
TEMPERATURE
RANGE
PRESSURE RANGE
CL150 CL300
WCC CF8M WCC CF8M
_C Bar
-254 to -29 --- 19.0 --- 49.6
-29 t o 38 20 19.0 51.7 49.6
93 17.9 16.2 51.7 42.7
149 15.9 14.8 50.3 38.6
204 13.8 13.4 48.6 35.5
260 11.7 11.7 45.9 33.1
316 9.7 9.7 41.7 31.0
343 8.6 8.6 40.7 30.3
371 7.6 7.6 38.3 30.0
399 6.6 6.6 34.8 29.3
427 5.5 5.5 28.3 29.0
454 --- 4.5 --- 29.0
482 --- 3.4 --- 28.6
510 --- 2.4 --- 26.5
538 --- 1.4 --- 25.2
_F Psi
-450 to -20 --- 275 --- 720
-20 to 100 290 275 750 720
200 260 235 750 620
300 230 215 730 560
400 200 195 705 515
500 170 170 665 480
600 140 140 605 450
650 125 125 590 440
700 110 110 555 435
750 95 95 505 425
800 80 80 410 420
850 --- 65 --- 420
900 --- 50 --- 415
950 --- 35 --- 385
1000 --- 20 --- 365