Data Sheet

EW Valve
D100023X012
Product Bulletin
51.1:EW
August 2012
9
Table 1. Metal Trim Part Materials for Compatibility with NACE MR0175-2002 (Sour Service) Specifications,
Environmental Restrictions A pply, R efer to Standard
Trim Designation Valve Plug Cage
Seat Ring
for Standard
Metal Seat
Construction
Disk Seat and
Retainer for
Optional
PTFE-Seat
Construction
Valve Stem, Packing
Follower, Lantern Ring,
Packing Box Ring, and
Pin
Load Ring
(1)
85
(3)
S31600
S31600 with
electroless nickel
coating (ENC)
S31600 ---
S20910 (Valve Stem)
S31600 (All Other Parts)
N05500
85C
(2,3)
S31600
S31600 with
electroless nickel
coating (ENC)
--- S31600
86
(3)
S31600 with seat
hard faced with
CoCr-A hardfacing
alloy
S31600 with
electroless nickel
coating (ENC)
R30006 (alloy 6) ---
87
S31600 with seat
and guide hard
faced with CoCr-A
hardfacing alloy
S31600 with
electroless nickel
coating (ENC)
R30006 (alloy 6) ---
87C
(2)
S31600 with seat
and guide hard
faced with CoCr-A
hardfacing alloy
S31600 with
electroless nickel
coating (ENC)
--- S31600
1. NPS 10x8 and 12x8 valve body only.
2. 85C and 87C are trims for PTFE-seat constructions in EWS and EWT valves.
3. Not for use with Whisper Trim I with 5-3/8inchandlargerports.
1600
1400
1200
1000
800
600
400
200
0
--200 --100
-- 5 0
0 100 200 300 400 500
PRESSURE DROP, PSI
FOR S TANDARD 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
87C
2
1600
1400
1200
1000
800
600
400
200
0
--200 --100 0 100 200 300 400 500 600
PRESSURE DROP, PSI
FOR OPTIONAL METAL SEATING WITH
CF8M MATERIAL
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
87
85
1
4
2
3
NOTES:
USE TRIM 87 INSTEAD OF TRIM 85 FOR NONLUBRICATING FLUIDS SUCH AS SUPERHEATED STEAM OR DRY G ASES BETWEEN 149C (300F) AND 316C(600F).
DO NOT EXCEED THE MAXIMUM PRESSURE AND TEMPERATURE FOR THE CLASS RATING OF THE BODY MATERIAL USED, EVEN THOUGH THE TRIMS SHOWN MAY
HAVE HIGHER CAPABILITIES.
USE TRIM 85 UP TO 99 BAR (1440 PSI) WITH CLEAN DRY GAS. FOR PROCESS FLUIDS OTHER THAN CLEAN DRY GAS, USE TRIM 8 5 ONLY UP TO 21 BAR (300 PSI).
TRIM 87 TEMPERATURE LIMIT CAN BE EXTENDED ABOVE 232C (450F) IF PEEK ANTI-EXTRUSION RINGS AND SPRING-LOADED SEAL RING ARE USED.
1
2
85C
3
4
A3115-3
Figure 7. Typical Trim for NACE MR0175-2002 (Sour Service) (tables 11, 12, and 13 should be used along with these
graphs to determine specific limits based on valve size and trim selection)