Instruction Manual
D103553X012
Large ET and ED Valves
July 2017
5
CAUTION
When ordered, the valve configuration and construction materials were selected to meet particular pressure, temperature,
pressure drop, and controlled fluid conditions. Responsibility for the safety of process media and compatibility of valve
materials with process media rests solely with the purchaser and end-user. Since some valve body/trim material
combinations are limited in their pressure drop and temperature ranges, do not apply any other conditions to the valve
without first contacting your
Emerson sales office
or Local Business Partner.
Before installing the valve, inspect the valve and pipelines for any damage and any foreign material which may cause
product damage.
1. Before installing the valve, inspect the valve and associated equipment for any damage and any foreign material.
2. Make certain that the valve body interior is clean, that pipelines are free of foreign material, and the valve is
oriented so that pipeline flow is in the same direction as the arrow on the side of the valve.
3. The control valve assembly may be installed in any orientation unless limited by seismic criteria. However, the
normal method is with the actuator vertical above the valve. Other positions may result in uneven valve plug and
cage wear and improper operation. Support the actuator if it is not installed in the vertical position. For more
information, consult your Emerson sales office or Local Business Partner.
4. Use accepted piping and welding practices when installing the valve in the line. For flanged valves, use a suitable
gasket between the valve and pipeline flanges.
CAUTION
Depending on valve body materials used, post weld heat treating may be required. If so, damage to internal elastomeric
and plastic parts, as well as internal metal parts is possible. In general, if post weld heat treating is to be performed, all trim
parts should be removed. Contact your Emerson sales office or Local Business Partner for additional information.
5. With a leak‐off bonnet construction, remove the pipe plugs (key 46) to hook up the leak-off piping. If continuous
operation is required during inspection or maintenance, install a three‐valve bypass around the control valve
assembly.
6. If the actuator and valve are shipped separately, refer to the actuator mounting procedure in the appropriate
actuator instruction manual.
WARNING
Personal injury could result from packing leakage. Valve packing was tightened before shipment; however the packing
might require some readjustment to meet specific service conditions. Check with your process or safety engineer for any
additional measures that must be taken to protect against process media.
Valves with ENVIRO‐SEAL
t
live‐loaded packing or HIGH‐SEAL ULF live‐loaded packing will not require this initial
readjustment. See the Fisher instruction manuals titled
ENVIRO‐SEAL Packing System for Sliding‐Stem Valves
(
D101642X012
) or
HIGH‐SEAL ULF Live‐Loaded Packing System (
D101453X012
) (as appropriate) for packing
instructions. If you wish to convert your present packing arrangement to ENVIRO-SEAL packing, refer to the retrofit
kits listed in the Parts Kits section.
Maintenance
Unless otherwise noted, refer to the following figures for key numbers: figure 5: ED/EWD Valves, figure 6: ET/EWT
Valves, figure 7: ET/EWT Valves with HTS1 Seals, or figure 8: ET-C/EWT-C Valves.
