Instruction Manual
D102175X012
EZ-C, ET-C, and EWT-C Valves
July 2017
3
Table 2. Maximum Allowable Actuator Thrust for Standard Style 3 Bonnet Extension Length
VALVE SIZE, NPS
STEM DIAMETER
MAXIMUM ALLOWABLE STEM LOAD
FOR S20910 (XM‐19) STEM MATERIAL
mm Inches N Lb
1
9.5 3/8 5382 1210
12.7 1/2 13166 2960
1-1/2
9.5 3/8 5338 1200
12.7 1/2 13166 2960
2
12.7 1/2 14367 3230
19.1 3/4 44169 9930
3
12.7 1/2 15301 3440
19.1 3/4 45459 10220
4, 6X4, 8X4
12.7 1/2 16458 3700
19.1 3/4 46971 10560
6, 8X6, 12X6
19.1 3/4 36385 8180
25.4 1 81487 18320
8, 10X8
19.1 3/4 41366 9300
25.4 1 87003 19560
Educational Services
For information on available courses for Fisher EZ-C, ET-C, and EWT-C valves, as well as a variety of other products,
contact:
Emerson Automation Solutions
Educational Services - Registration
Phone: 1-641-754-3771 or 1-800-338-8158
E-mail: education@emerson.com
emerson.com/fishervalvetraining
Installation
Isolate the control valve from the line pressure, release pressure from both sides of the valve body, and drain the
process media from both sides of the valve. Remove actuator supply pressure, and use lockout procedures to be sure
that the above measures stay in effect while you work on the equipment. Refer to the Warnings at the beginning of the
Maintenance section for additional information.
WARNING
Always wear protective gloves, clothing, and eyewear when performing any installation operations to avoid personal
injury.
Personal injury or equipment damage caused by sudden release of pressure may result if the valve assembly is installed
where service conditions could exceed the limits given in table 1 or on the appropriate nameplates. To avoid such injury or
damage, provide a relief valve for over‐pressure protection as required by government or accepted industry codes and
good engineering practices.
Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
If installing into an existing application, also refer to the WARNING at the beginning of the Maintenance section in this
instruction manual.
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