Data Sheet

ET Valve
D100022X012
Product Bulletin
51.1:ET
December 2012
22
Table 16. Port Diameters, Valve Plug Travel, Yoke Boss Diameters for TSO (Tight Shutoff) Trim
VALVE TRIM
MAX TRAVEL YOKE BOSS SIZE
PORT DIAMETER
C
V
REDUCTION
AT 100%
TRAVEL
(1)
UNBALANCE
AREA
Nominal Actual TSO
mm Inch mm Inch mm Inch mm Inch Inch
2
ET
NPS 3
CAV III 2-Stage 76.2 3
90
127
3-9/16
5
73.0 2.875 68.3 2.6875 0% 0.098
ET
NPS 4
CAV III 2-Stage 102 4
90
127
3-9/16
5
73.0 2.875 68.3 2.6875 5% 0.098
EAT
NPS 4
Std 38.1 1.5
71.4
90
2-13/16
3-9/16
87.3 3.4375 82.6 3.25
6%
4%
0.118
EAT
NPS 6
Std 50.8 2 90 3-9/16 111 4.375 106 4.1875
4% (linear)
3% (equal
percent)
0.154
1. This column lists the percent reduction of published maximum C
V
of the trim listed in the TRIM column.
Figure 14. Typical Trim for NACE MR0175 / ISO 15156 and MR0103 (Sour Service)
1600
1400
1200
1000
800
600
400
200
0
- 200 - 100 0 100 200 300 400 500
PRESSURE DROP, PSI
FOR STANDARD PTFE SEATING WITH
ALL BODY MATERIALS
PRESSURE DROP, BAR
110
100
90
80
70
60
50
40
0
30
20
10
FLUID TEMPERATURE, F
- 100 - 50 0 50 100 150 200 250
FLUID TEMPERATURE, C
1600
1400
1200
1000
800
600
400
200
0
- 200 - 100 0 100 200 300 400 500 600
PRESSURE DROP, PSI PRESSURE DROP, BAR
110
100
90
80
70
60
50
40
0
30
20
10
FLUID TEMPERATURE, F
- 100 - 50 0 50 100 150 200 250
FLUID TEMPERATURE, C
300
450
86
2
3
4
87C
85C
87
85
1
FOR OPTIONAL METAL SEATING WITH
ALL BODY MATERIALS
Notes:
Use trim 87 instead of trim 85 for nonlubricating fluids such as super-heated steam or dry gases between 1 49C (300F) and 232C (450F).
Donot exceedthemaximumpressureandtemperaturefort he pressureratingofthe bodymaterialused,eventhoughthe trimsshownmay havehighercapabilities.
Trim 85 may be used up to 99 bar (1440 psi) with clean dry gas. For process fluids other than clean dry gas, use trim 85 only up to
21 bar (300 psi).
Trim 87 temperature limits can be extended to 316C(600F) for non-oxidizing service or 260C (500F) for oxidizing service if PEEK anti-extrusion rings are used
with spring-loaded seal rings.
1
2
3
4
A6739-1
87