Data Sheet
ED Valve
D100017X012
Product Bulletin
51.1:ED
December 2012
18
Table 8. Bonnet Selection Guidelines
BONNET STYLE PACKING MATERIAL
IN-BODY PROCESS TEMPERATURE LIMITS
(1)
_C _F
Plain:
J Standard for all valves through
NPS 6 valve body with 2-13/16 yoke
boss diameter
J StandardforNPS6and8valvesincast
iron and WCC steel bonnet material with
3-9/16 yoke boss diameter
PTFE V-ring -18 to 232 0 to 450
PTFE/Composition -18 to 232 0 to 450
Graphite ribbon/filament
-18 to maximum shown
in table 6
0 to maximum shown
in table 6
Style 1 Cast Extension:
J Standard for NPS 8 valves in S31600
bonnet material with 3-9/16 yoke boss
diameter
PTFE V-ring
-46 to 427 -50 to 800
PTFE/Composition
Graphite ribbon/filament
-46totomaximumshown
in table 6
-50 to maximum shown
in table 6
Style 2 Cast Extension:
J Optional for NPS 2 through 4 valves with
2-13/16 inch yoke boss diameter
J Optional for NPS 6 and 8 valves
with 3-9/16 yoke boss diameter. Not
available for NPS 8 valve in S31600
bonnet material
PTFE V-ring
-101 to 427 -150 to 800
PTFE/Composition
Graphite ribbon/filament
-101 to maximum shown
in table 6
-150 to maximum shown
in table 6
ENVIRO-SEAL bellows seal bonnet
PTFE
For exceptional stem sealing capabilities. See
Bulletin 59.1:070, ENVIRO-SEAL Bellows Seal
Bonnets, for pressure/temperature ratings.
Graphite ULF
1. These in-body process temperatures assume an o utside, ambient temperature of 21_C(70_F) and no insulation on the bonnet. When using any packing at low process temperatures, a cast
extension bonnet may have to be used to prevent packing damage which could result from the formation of valve stem frost. Material selection for trim and other components will also be
limiting factors.
Table 9. Maximum Flow Coefficients for Full-Sized Trim with Equal Percentage Cage and Normal Flow Direction
Valve Valve Size, NPS C
v
at Max. Valve Plug Travel
ED
1
1-1/2
2
2-1/2
3
17.2
35.8
59.7
99.4
136
4
6
8
(1)
8
(2)
224
394
567
819
EAD
with liner
1
2
3
4
6
18.5
48.1
149
152
336
without liner
1
2
3
4
6
19.0
47.2
148
156
328
EDR
1
1-1/2
2
2-1/2
3
4
17.2
35.8
59.7
99.4
136
224
1. With 51 mm (2 inch) travel.
2. With 76 mm (3 inch) travel.