Data Sheet

EW Valve
D100023X012
Product Bulletin
51.1:EW
August 2012
14
Figure 8. Typical Trim Used in Fisher EWD, EWS, or EWT Valves Except Those with Cavitrol III or Whisper Trim III Cages
(tables 11, 12, and 13 should be used along with these graphs to determine specific limits based on valve size and
trim selection)
NOTES:
BE ESPECIALLY CAREFUL TO SPECIFY SERVICE TEMPERATURE IF TRIM 3,4, OR 37 IS SELECTED, AS DIFFERENT THERMAL EXPANSION RATES REQUIRE SPECIAL PLUG
CLEARANCES, ALSO, USE TRIM 37H INSTEAD OF TRIM 4 FOR NON-LUBRICATING FLUIDS SUCH AS SUPERHEATED STEAM OR DRY GASES 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.
1
2
USE TRIM 27 INSTEAD OF TRIM 29 FOR NON-LUBRICATING FLUIDS SUCH AS SUPERHEATED STEAM OR DRY GASES BETWEEN 149C (300F) AND 316C(600F).
TRIMS 4 AND 29 MAY BE USED OVER 300 PSI ONLY WITH CLEAN, DRY GAS.
EWD, EWS, AND EWT NPS 12x8 CL900 LIMITED TO CL600 PRESSURE DROPS. SEE F IGURE 9 AND 10 EWD-1, EWS-1, AND EWT-1 FOR FULL CL900 NPS 12x8
PRESSURE DROPS.
3
4
5
PRESSURE DROP, PSI
PRESSURE DROP, BAR
FLUID TEMPERATURE, F
FLUID TEMPERATURE, C
FLUID TEMPERATURE, C
FLUID TEMPERAT URE, C
PRESSURE DROP, PSI
PRESSURE DROP, PSI
FLUID TEMPERATURE, F
FLUID TEMPERAT URE, F
PRESSURE DROP, BAR
PRESSURE DROP, BAR
FOR PTFE SEATING WITH ALL CL600
OR NPS 12x8 CL900 BODY MATERIALS
WITH CL600 OR NPS 12x8 CL900
WCC OR LCC STEEL BODY
WITH CL600 OR NPS 12x8 CL900
WC9 CHROME MOLY STEEL BODY
WITH CL600 OR NPS 12x8 CL900
CF8M (316SST) BODY
A6334-1
2
2
2
2
-20
FLUID TEMPERATURE, C
PRESSURE DROP, PSI
FLUID TEMPERATURE, F
PRESSURE DROP, BAR
1050
5 5
5
5