规格 Specifitions
Product Bulletin
51.1:easy-e Cryogenic
August 2012
Specifications (Continued)
Standard Construction Materials
Valve Body and Bonnet: CF8M (316 SST)
Body-Bonnet Bolting: SA-193-B8M Class 2 studs
with SA-194-8M nuts (see table 6)
Bonnet Bushing: S31600/filled PTFE
Flat Sheet Gaskets: S31600/graphite
Spiral Wound Gasket: N06600/graphite
Packing Studs and Nuts: S31600 SST
Seal Ring (ET-C and EWT-C): UHMWPE(3) with R30003
spring
Back-Up Ring (ET-C and EWT-C): S31600 (316 SST)
Retaining Ring (ET-C and EWT-C): $30200 (302 SST)
Load Ring (for ET-C, NPS 8 and for EWT-C, NPS 10 x 8
only): NO7718
Packing Follower, Lantern Ring, Packing Spring(4) and
Packing Box Ring: 31600 SST
Material Temperature Capabilities(2)
ET-Cand EWT-C
-198 to 66°C (-325 to 150°F)
EZ-C
-198 to 149°C (-325 to 300°F)
Bonnet Extension Length
See figures 3 and 4 for standard valve dimensions
Flow Coefficients and Noise Level Prediction
See Catalog 12
Port Diameters, Plug Travel, Yoke Boss, and Stem
Diameter
See tables 4 and 5
Packing Arrangements
Standard Material
M Single PTFE V-ring. See figures 1 and 2
easy-e Cryogenic Valves
D102189X012
Optional Materials
W Double PTFE V-ring and
M Graphite ribbon/filament
ENVIRO-SEAL Packing Systems: See figure 5
Packing Material: B PTFE V-ring and B Graphite ULF
See Bulletin 59.1:061, ENVIRO-SEAL Packing Systems
for Sliding-Stem Valves, for more information
Approximate Weights (CL600 Valves)
ET-C:
NPS 3:51 kg (135 Ib)
NPS 4: 95 kg (210 Ib)
NPS 6: 211 kg (465 lb)
NPS 8: 372'kg (820 Ib)
EWT-C:
NPS 6X4: 200 kg (440 Ib)
NPS 8X4:277 kg (610 Ib)
NPS 8X6:318 kg (700 Ib)
NPS 12X6: 730 kg (1610 Ib)
NPS 10X8: 753 kg (1660 Ib)
EZ-C
NPS 1: 15 kg (33 Ib)
NPS 1-1/2: 23 kg (48 Ib)
NPS 2: 41 kg (90 Ib)
NPS 3: 60 kg (130 Ib)
NPS 4: 95 kg (210 Ib)
Options
ET-Cand EWT-C: B Whisper Trim Ill and WhisperFlo™
trim for aerodynamic noise attenuation, and
M Cavitrol ™ Ill cages for liquid cavitation protection
are available. Contact your Emerson Process
Management sales office for information
EZ-C: B Micro-Flute and B Micro-Flow trim
1. Valve size number is end connection size by normal trim size. For example, an NPS 6X4 EWT-C valve has NPS 6 end connections with NPS 4 trim (see table 4).
2. Do not exceed the pressure or temperature limits in this bulletin, and any applicable code limitations.
3. UHMWPE stands for ultra high molecular weight polyethylene.
4. Aspring is used only with PTFE V-ring packing. A R
5 Downis i hough the cage and ou th seat fng see figure 1)
6. Class V shutoff cannot be performed with water. T
service temperatures.
ntern rings replace the spring in other packing arrangements.
e residual trapped moisture from testing with water can cause valve and trim damage from the ice crystals formed at below freezing
