Data Sheet

EW Valve
D100023X012
Product Bulletin
51.1:EW
August 2012
28
Table 23. Bonnet Selection Guidelines
BONNET STYLE
(CL300, 600)
(1)
PACKING
IN-BODY PROCESS
TEMPERATURE LIMITS
(2)
_C _F
Plain Bonnet
J Standard for NPS 2, 4, and 6
nominal trim sizes
J Standard for NPS 10x8 and 12x8 valves
(in cast iron, WCC). Not
available in S31600
PTFE V-ring -18 to 232 0 to 450
PTFE/composition -18 to 232 0 t o 450
Graphite ribbon/filament -18tomaximumshownintable20 0tomaximumshownintable20
Style 1 Cast Extension Bonnet
J Optional for NPS 2, 4, and 6
nominal trim sizes
J Standard for NPS 10x8 and 12x8
valves (in S31600). Optional
in WCC; not available in cast iron
PTFE V-ring
-46 to 427 -50 to 800
PTFE/composition
Graphite ribbon/filament to maximum shown in table 20 to maximum shown in table 20
Style 2 Cast Extension Bonnet
J Optional for NPS 2, 4, and 6
nominal trim sizes
J Optional for NPS 10x8 and 12x8
valves (in WCC). Not available in cast
iron or S31600
PTFE V-ring
-101 to 427 -150 to 800
PTFE/Composition
Graphite ribbon/filament to maximum shown in table 20 to maximum shown in table 20
ENVIRO-SEAL Bellows Seal Bonnet
J Optional for NPS 2, 4, 6, and 8 nominal
trim sizes. Maximum travel is 2 inches
PTFE
For exceptional stem sealing
capabilities. See Bulletin 59.1:070,
ENVIRO-SEAL Bellows Seal Bonnets
(D101641X012), for
pressure/temperature ratings.
For exceptional stem sealing
capabilities. See Bulletin 59.1:070,
ENVIRO-SEAL Bellows Seal Bonnets
(D101641X012), for
pressure/temperature ratings.
Graphite ULF
1. For CL900 valve bodies, only the plain bonnet is available. Contact your Emerson Process Management sales office for assistance if application conditions indicate the need for an extension
bonnet for a CL900 valve body.
2. These in-body process temperatures assume an outside, ambient temperature o f 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 co mponents will also be
limiting factors.
Table 24. Bolting Materials and Temperature Limits for Bolting Compliance with NACE MR0175-2002, NACE
MR0175/ISO 15156, and N ACE MR0103. Environmental restrictions may apply.
VALVE BODY MATERIAL BOLTING MATERIAL
TEMPERATURE
CAPABILITIES
_C _F
Min Max Min Max
Non-exposed bolting (Standard)
WCC
Studs Steel SA-193-B7
-7 232 20 450
Nuts Steel SA-194-2H
Studs Steel SA-193-B7
232 427 450 800
Nuts Steel SA-194-2H lubricated
CF8M
(316 SST)
Studs Steel SA-193-B7 or B8M strain hardened
-48 232 -55 450
Nuts Steel SA-194-2H or 8M
Studs Steel SA-193-B8M strain hardened or B7
232 427 450 800
Nuts Steel SA-194-8M lubricated or 2H lubricated
Exposed bolting (Optional)
Requires Derating of Valve
(2)
When These Body-to-Bonnet Bolting Materials are Used
WCC and CF8M
Studs Steel SA-193-B7M
-46
(1)
232 -50
(1)
450
Nuts Steel SA-194-2HM
Studs Steel SA-193-B7M
232 427 450 800
Nuts Steel SA-194-2HM lubricated
1. Minimum temperature is -29_C(-20_F) with WCC valve body material.
2. Derating is not required for CL300 valves. Derating may be required for valves rated at CL600 or 900. C ontact your Emerson Process Management sales office for assistance in determining
the derating of valves when these body-to-bonnet bolting materials are used.