Data Sheet

easy-e Cryogenic Valves
D102189X012
Product Bulletin
51.1:easy-e Cryogenic
August 2012
5
Table 1. Fisher ET-C and EWT-C Typical Trim Material
(1)
Trim Designation Valve Plug
Valve Stem
Cage Seat Ring
429
S31600 SST with CoCr-A (Alloy 6)
hard-faced seat
S20910 Chrome-plated S31600 SST S31600 SST
430
(2)
S31600 SST S20910 Chrome-plated S31600 SST S31600 SST/CTFE
431
S31600 SST with CoCr-A (Alloy 6)
hard-faced seat and guide
S20910 Chrome-plated S31600 SST S31600 SST
1. Whisper Trim III requires use of Trim 431.
2. Soft seat construction.
Table 2. Fisher EZ-C Typical Combinations of Metal Trim P arts for Equal Percentage (Including Micro-Form), Linear,
and Quick-Opening Valve Plugs
Trim Designation Valve Plug Valve Stem Seat Ring Seat Ring Retainer Guide Bushing
327
S31600 SST with
CoCr-A (Alloy 6)
hard-faced Seat and
Guide
S20910
(XM-19)
S31600 CF8M R30006
328
S31600 SST with
CoCr-A (Alloy 6)
hard-faced Seat
Table 3. Maximum Allowable Actuator Thrust for Standard Bonnet Extension Length
VALVE VALVE SIZE, NPS
STEM DIAMETER
MAXIMUM ALLOWABLE STEM LOAD
FOR S20910 (XM-19) STEM MATERIAL
mm Inches N Lb
ET-C and EWT-C
3
12.7 1/2 15,301 3440
19.1 3/4 45,459 10,220
4, 6X4, 8X4
12.7 1/2 16,458 3700
19.1 3/4 46,971 10,560
6, 8X6, 12X6
19.1 3/4 36,385 8180
25.4 1 81,487 18,320
8, 10X8
19.1 3/4 41,366 9300
25.4 1 87,003 19,560
EZ-C
1
9.5 3/8 5382 1210
12.7 1/2 13,166 2960
1-1/2
9.5 3/8 5338 1200
12.7 1/2 13,166 2960
2
12.7 1/2 14,367 3230
19.1 3/4 44,169 9930
3
12.7 1/2 15,301 3440
19.1 3/4 45,459 10,220
4
12.7 1/2 16,458 3700
19.1 3/4 46,971 10,560