Emerson Fisher D4 User manual

www.Fisher.com
Fisher™D4 Control Valve with easy-Drive™
Electric Actuator
Contents
Introduction 1.................................
Scope of Manual 1.............................
Description 3.................................
Specifications 3...............................
Educational Services 3.........................
Installation 4..................................
Special Instructions for “Safe Use” and Installations
in Hazardous Locations 5.....................
Startup Overview 6............................
Important Technical Notice for easy-Drive
Electric Actuator 10.........................
Default Input Signals 10........................
Configuration 10..............................
Input Configuration 10.....................
Changing the Inputs from Default Settings 11..
Modbus Setup 11.............................
Calibration Instructions 13..................
Troubleshooting 15.............................
Maintenance 16................................
Valve Plug and Seat Ring 17.....................
Valve Packing 18..............................
Parts Ordering 21...............................
Repair Kits 21..................................
Parts List 21...................................
Appendix A 25.................................
Figure 1. Fisher D4 Control Valve with easy-Drive
Electric Actuator
W9933-1
Introduction
Scope of Manual
This instruction manual provides installation, maintenance, and parts information for the Fisher D4 control valve with
easy-Drive electric actuator.
Do not install, operate, or maintain a D4 control valve with easy-Drive electric actuator without being fully trained and
qualified in valve, actuator, and accessory installation, operation, and maintenance. To avoid personal injury or
property damage, it is important to carefully read, understand, and follow all the contents of this manual, including all
safety cautions and warnings. If you have any questions about these instructions, contact your Emerson sales office or
Local Business Partner before proceeding.
Instruction Manual
D103597X012
D4 Valve with easy-Drive Actuator
October 2017

Instruction Manual
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D4 Valve with easy-Drive Actuator
October 2017
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Table 1. Specifications
Valve Body Sizes and End Connection Styles(1)
See table 2
Maximum Inlet Pressures and Temperatures(1)
If the valve nameplate shows an ASME
pressure‐temperature class, maximum inlet pressure
and temperature is consistent with the applicable
class per ASME B16.34. If the nameplate does not
show an ASME class, it will show a maximum cold
working pressure at 38_C (100_F) (for example, 293
bar [4250 psi])
Maximum Pressure Drops(1)
See table 4
Shutoff Classification per ANSI/FCI 70‐2
and IEC 60534‐4
Class IV
Material Temperature Capabilities(1)
Valve Body Assembly:
Standard Bonnet O‐Ring: -40 to 135°C (-40 to 275°F)
Optional Fluorocarbon Bonnet O‐Ring: -23 to 204°C
(-10 to 400°F)
Flow Characteristic
Equal percentage
Flow Direction
Flow up only
Port Diameters
See table 2
Valve Plug Travel
19 mm (0.75 inch)
Valve Plug Style
Micro‐Form valve plug
Available Actuator Configurations
On/off (snap acting)
Positioning (flow or pressure control)
Power Requirements
12 or 24VDC, minimum 4 amp power supply required
(fuse to 5 amps)
Maximum Current Draw
4 amps
Idle Current Draw
38 mA
Conduit Connections
Two 3/4 NPT connections
Stroke Length
19mm (0.75 inch)
Nominal Stroke Speed(2)
3.9 mm/s (0.15 inch/s) at 24 VDC
2.2 mm/s (0.09 inch/s) at 12 VDC
Hazardous Area Approvals
CSA (C/US): ExplosionProof Class I, Division 1,
Groups C and D, T6, Ex d IIA T6, Class I, Zone 1, AEx d
IIA T6
ATEX Flameproof - Gas:
II 2 G ,Ex d IIA T6
IECEx Flameproof - Gas: Ex d IIA T6
Enclosure Rating
Type 4X and IP66
Duty Cycle
50% maximum
Enclosure Material
Cast aluminum alloy with powder coat paint
Approximate Weight:
22 - 51 kg (49 - 113 lbs), depending upon
construction
1. The pressure or temperature limits in the referenced tables and any applicable ASME code limitations should not be exceeded.
2. 10% variation can be expected, based on temperature and pressure of application.

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Description
The D4 control valve with easy-Drive electric actuator is a compact, rugged valve designed primarily for high‐pressure
throttling applications. This valve is ideal for use on pressure and flow control applications within the oil and gas
production industry. The D4 valve also makes an excellent dump valve for high‐pressure separators and scrubbers.
The D4 control valve meets the metallurgical requirements of NACE MR0175/ISO 15156 without environmental limits
for temperatures below 135_C (275_F). If the temperature is above 135_C (275_F), the N07718 Belleville washers will
impose some limits, as shown in table 3.
Specifications
Table 1 lists specifications for the D4 control valve with easy-Drive electric actuator. Some of the specifications for a
given control valve as it originally comes from the factory are stamped on a nameplate located on the lower actuator
enclosure.
Educational Services
For information on available courses for the Fisher D4 control valve with easy-Drive electric actuator, as well as a
variety of other products, contact:
Emerson Automation Solutions
Educational Services - Registration
Phone: [phone] or 1-800-338-8158
E-mail: [email protected]
emerson.com/fishervalvetraining
Table 2. Valve Sizes and Connection Styles
VALVE
SIZE,
NPS
PORT
DIAMETER,
(INCHES)
SCREWED RAISED FACE (RF) FLANGED RING TYPE JOINT
(RTJ) FLANGED
4250 psi CL150 CL300 CL600 CL900 and
CL1500 CL600 CL900 and CL1500
10.25, 0.375,
0.5, 0.75 X X X X X X X
20.25, 0.375, 0.5
0.75, 1, 1.25 X X X X X X X
X = Available construction.
Table 3. D4 Environmental Limits for NACE MR0175/ISO 15156 with Sour Trim
MAXIMUM TEMPERATURE MAXIMUM H2S PARTIAL PRESSURE COMPATIBLE WITH
ELEMENTAL SULFUR?
_C_F MPa psia
232 450 0.2 30 No
204 400 1.4 200 No
199 390 2.3 330 No
191 375 2.5 360 No
149 300 2.8 400 No
135 275 No Limit Yes
Table 4. Fisher D4 easy-Drive Maximum Pressure Drop
PORT DIAMETER MAXIMUM PRESSURE DROP(1)
mm Inch Bar psi
6.4
9.5
12.7
19.1
25.4
31.8
0.25
0.375
0.5
0.75
1
1.25
293
293
247
105
56
34
4250(1)
4250(1)
3576(1)
1518
814
495
1. Downstream pressure, P2, is limited to 2250 psig.

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Installation
WARNING
Always wear protective gloves, clothing, and eyewear when performing any installation operations to avoid personal
injury.
To avoid personal injury or property damage caused by bursting of pressure‐retaining parts or by uncontrolled process
fluid, be certain the service conditions do not exceed the limits shown on the valve nameplate and in table 1. Use
pressure‐relieving devices 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.
WARNING
For explosionproof applications, ensure the actuator cover is properly bolted before applying power to the actuator.
Personal injury or property damage may result from fire or explosion if power is applied to the actuator with the cover
removed in a hazardous area.
For explosion‐proof applications, install rigid metal conduit and a conduit seal no more than 457 mm (18 inches) from the
actuator. Personal injury or property damage may result from explosion if the seal is not installed.
Select wiring and/or cable glands that are rated for the environment of use (such as hazardous area, ingress protection, and
temperature). Failure to use properly rated wiring and/or cable glands can result in personal injury or property damage
from fire or explosion.
Wiring connections must be in accordance with local, regional, and national codes for any given hazardous area approval.
Failure to follow the local, regional, and national codes could result in personal injury or property damage from fire or
explosion.
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 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.
To avoid product damage, inspect the valve before installation for any damage or any foreign material that may have
collected in the valve body. Also remove any pipe scale, welding slag, or other foreign material from the pipeline.
WARNING
Avoid personal injury or property damage caused by possible actuator failure. The use of a rigidly‐mounted support on the
actuator casing may cause additional stress on the actuator leading to premature wear and/or failure of the actuator
components.

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CAUTION
To avoid product damage, inspect the valve before installation for any damage or any foreign material that may have
collected in the valve body. Also remove any pipe scale, welding slag, or other foreign material from the pipeline.
1. Before installing the control valve assembly, inspect it for any damage and for any foreign material that may have
collected in the valve body.
2. Remove any pipe scale, welding slag, and other foreign material from the pipeline.
3. The control valve can be installed in any position, but normally the actuator is vertical above the valve. Install the
valve so the flow direction arrow on the side of the valve indicates the direction of the process flow.
4. Install the valve following local and national piping codes when they apply to the application. For screwed
connections, treat the external pipe threads with a good grade pipe compound. For flanged valves, use suitable
gaskets between valve and pipeline flanges.
5. If continuous operation is required during maintenance and inspection, install a conventional three‐valve bypass
around the valve.
Special Instructions for “Safe Use” and Installations in Hazardous
Locations
ATEX/IECEx
WARNING
To avoid static discharge from the enclosure, do not rub or clean the enclosure with solvents. To do so could result in an
explosion. Clean with a mild detergent and water only.
The enclosure is nonconducting and may generate an ignitioncapable level of electrosatic charges under certain extreme
conditions. The user should ensure that the equipment is not installed in a location where it may be subjected to external
conditions (such as highpressure steam) which might cause a buildup of electrostatic charges on nonconducting surfaces.
Additionally, cleaning of the equipment shall only be done with a damp cloth.
To avoid damage to the enclosure, when screws are fully tightened into blind holes in enclosure walls, with no washer
fitted, at least one full thread shall remain free at the base of the hole.

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Startup Overview
Figure 2. Flowchart
WIRE PER WIRING
INSTRUCTIONS ON
PAGES 7-9
IS YOUR CONTROL
METHOD LISTED IN
TABLE 5 ON PAGE 10?
YES NO
ARE YOU USING MODBUS
TO MONITOR REGISTERS?
PROCEED TO
MODBUS SETUP
SECTION ON
PAGE 10
PROCEED TO
MODBUS SETUP
SECTION ON
PAGE 10
PROCEED TO
STARTUP SECTION
ON PAGE 14
CHANGE INPUTS PER
INSTRUCTIONS ON
PAGE 12
YES
NO

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Figure 3. Fisher D4 Valve with easy-Drive Actuator Wiring Diagram
FIELD WIRING CONNECTIONS
MOTOR / GEARBOX ASSY
(GE48474)
CONTROLLER
POWER AND
CONTROL TERMINAL
GE47302-7
TOP VIEW CONTROLLER
Power Requirements
Ensure a stable DC power source is available, maintaining less than 5% ripple and sufficiently surge protected for the
application. A 4 amp (minimum) power supply is required. Use of a 36 volt transient voltage suppressor is highly
recommended.
Wiring Instructions
1. Observe local wiring requirements for hazardous location usage.
2. Conduit seals within 457 mm (18 inches) of the enclosure port are required for explosionproof installation.
3. 22AWG (0.33mm2) to 12AWG (3.31mm2) wire size required.
4. Fuse system to 5A.
5. Connect enclosure and analog signal shields.
6. Ensure power is turned off before connecting the wires.
Power
1. Connect 12 or 24 VDC reference to: –
2. Connect 12 or 24 VDC positive to: +
3. Be sure to tighten terminals sufficiently to ensure solid mechanical connection.

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Figure 4. Wiring - Analog Input
Analog Input
(420mA: 40033=1, 40034=1, 40043=0(1))
1. Connect signal to terminal 3
2. Connect reference to terminal 4
3. Connect 250 ohm resistor between
terminals 3 and 4 as shown.
NOTE:
1. 40043=0 SETS ANALOG INPUT TO 1-5V AND ASSUMES USE OF RECOMMENDED EXTERNAL 250 OHM RESISTOR.
IF NO EXTERNAL RESISTOR IS USED, SET 40043=1.
Figure 5. Wiring - L2e
L2e (dual dry contact:
40033=0, 40034=0, 40043=0)
1. Connect L2e brown wire to terminal 1 (COMM (com))
2. Connect L2e red wire to terminal 2 (N.O. (OPEN))
3. Connect L2e blue wire to terminal 3 (N.C. (CLOSE))
Your actuator may be labelled:
1. COMM
2. N.O.
3. N.C.
or
1. com
2. OPEN
3. CLOSE

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Figure 6. Wiring - Single Dry Contact
Dry Contact (single dry contact:
40033=0, 40034=0, 40043=1)
1. Connect one side of contact switch to terminal 1 (COMM)
2. Connect other side of contact switch to terminal 2 (N.O.)
Figure 7. Wiring - Modbus Input
Modbus Input: 40033=1
1. Connect Channel A (T+) to terminal 5
2. Connect Channel B (T-) to terminal 6
Modbus Defaults
Address 1
9600 Baud
Even parity
1 Stop Bit

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Important Technical Notice for easyDrive Electric Actuator
When using the easyDrive electric actuator with a 420mA control signal, the unit should always have 12/24VDC
power present on the power input terminals prior to applying the 420mA signal, unless an external 250 ohm resistor
is installed per figure 4. Failure to do so could result in damage to the analog input circuitry.
It is strongly recommended to place an external 250 ohm resistor between terminals 3 and 4 when using a 4-20mA
signal to control the actuator. When the actuator is configured to 1-5V input with an external 250 ohm resistor in
place, a 4-20mA signal may be safely used without danger to input circuitry.
This order of operation must always be maintained when powering the unit on if no external 250 ohm resistor is used:
1. 12/24VDC power on
2. 420mA control signal engaged
This order of operation must always be maintained when powering the unit off:
1. 420mA control signal disengaged
2. 12/24VDC power off
The result of not following this order of operation could result in permanent damage to the analog input circuitry. This
damage can result in the inability of the controller to see the control signal, resulting in the actuator moving the valve
plug to the loss of signal position.
Default Input Signals
The D4 with easyDrive comes from the factory calibrated and ready for use with the following default input signals
shown in table 5.
Table 5. D4 easy-Drive Default Input Signals
CONFIGURATION ON/OFF POSITIONING
Input Signal L2e (dual dry contact) 4-20 mA
If the input signal of the application matches table 5, proceed to the Wiring Instructions section. If the input signal of
the application does not match table 5, proceed to the Configuration section.
Configuration
Input Configuration
There are 2 functional configurations available for the easyDrive electric actuator: On/Off and Positioning. It is not
possible to change an actuator from On/Off to Positioning after it has been delivered from the factory. Version 4.21
and higher firmware will allow a positioning unit to be changed to on/off.
All available input signals are shown in table 6.
Table 6. All Available Input Signals
CONFIGURATION ON/OFF POSITIONING
Control Source Modbus Local Modbus Local
Input Signal Modbus L2e Dual Dry
Contact (default) Single Dry Contact Modbus 4-20 mA (default) 1-5 V
If you are using the default inputs signals, and the valve has not been disassembled or adjusted in any way, there is no
need to recalibrate the assembly. You can proceed directly to Startup (page 12).

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Changing the Inputs from Default Settings
All configuration within the valve is done by setting values in Modbus registers. This can be done using any Modbus
master (flow computer, PLC, PC). Configuration software, providing a visual interface to the registers, is available
through your Emerson local business partner or the Fisher website.
Modbus setup
Use the instructions in the instruction manual for the Modbus master to initiate the connection. The D4 with
easyDrive electric actuator Modbus factory defaults are Address 1, 9600 baud, even parity, 1 stop bit.
When a connection has been achieved, the actuator may be configured to accept the input signal over the Modbus
link (ignoring the physical inputs) and the Modbus settings may be changed to accommodate the network to which it
is attached. Other changes to functionality are possible, such as:
D Low level cutoff: 40037 (default is 5%)
D Position upon loss of signal: 40035 (default is 0%)
See Appendix A for a full map of Modbus registers and their functions.
Figure 8. Fisher easy-Drive Configuration Software

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Connecting using the Fisher easyDrive configuration software
The Fisher easyDrive configuration software allows configuration and diagnosing of the Fisher easyDrive electric
actuator with a graphical interface. Connect a PC to the actuator using a USB or serial to Modbus RTU converter using
the wiring instructions above. The USB or serial device will be visible in the drop menu under Serial Port Settings. Baud
rate and parity should be set to the Modbus settings of the actuator. Default actuator settings are 9600 baud and Even
parity.
Use the Fisher easyDrive configuration software (figure 8) to make the desired changes, or register values may be
changed to allow different functionality. Modbus register 40034 dictates whether the unit will respond to a physical
signal or to the value in Modbus register 40001. A value of 0 in register 40034 will result in the actuator responding to
the value in 40001 and a value of 1 will result in the actuator responding to physical control signals.
Note
If an actuator is on/off, a Modbus command of 049 in register 40001 will cause the valve to close fully, while a value of 50100 will
cause the valve to open fully.
Local to Modbus Control
Modbus
D Set register 40034 (Control Source)
D 1 = Local Control
D 0 = Modbus control
Configuration Software
D Use radio button to select Local Control or Modbus Control.
420mA to 15V Control
Modbus
D Set register 40043 (Analog I/P mode)
D 0 = 15V
D 1 = 420mA
Configuration Software
D Use radio button to select 420mA or 15V local analog control when Control Source is set to Local.
L2e (Dual dry contact) to Single Dry Contact Control
Modbus
D Set register 40043 (Analog I/P mode)

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D 0 = L2e (Dual dry contact)
D 1 = Single dry contact
Configuration Software
D Use radio button to select L2e or Single pole local digital control when Control Source is set to Local.
Calibration Instructions
WARNING
To avoid personal injury or property damage, be aware that the valve will open fully and then close fully during the
calibration cycle.
It is not necessary to calibrate your easyDrive electric actuator prior to use from a factory shipment.
If any of the following are true, recalibration will be required (see next section)
D The actuator has been remounted on a different valve since shipment
D Disassembly of the valve for trim or packing changes
D A new version of firmware has been loaded on the controller
The following scenarios do not require recalibrations
D New unit from the box
D Power dips or interruptions
D Changing of control method (i.e. from 420mA to Modbus control)
D Extended periods of storage
Calibration with the use of Modbus
1. After the unit has been properly wired and fused per instructions in the Wiring section of this instruction manual,
turn power to the unit on.
2. Calibrate using Modbus:
a. Send position command of 0% to actuator to prevent unexpected motion. Valve will move to commanded
position following the calibration procedure.
b. Send a value of 1 to register 40003. Valve plug will move to fully closed. The valve plug will then return to the
commanded position.
If a Modbus connection is not available, and recalibration is desired, use the appropriate calibration method as
determined by the control method of your valve.
Calibration without the use of Modbus
1. Turn power to the actuator off

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2. Wait for 10 seconds to ensure all circuits have discharged.
3. Return power to the actuator and use the appropriate calibration method for your control signal. Calibration
sequence must be done within 15 seconds of power being switched on.
4. For On/Off operation using L2e dualinput dry contact:
a. Close the contact to create a short between pins 1 and 2 – valve plug will not move at this time.
b. Close the contact to create a short between pins 1 and 3 – valve plug will move to the lower, closed position.
5. For On/Off operation using single dry contact:
a. Close the contact to create a short between pins 1 and 2 – valve plug will not move at this time.
b. Open the contact to create an open circuit between pins 1 and 2 – valve plug will move to the lower, closed
position.
6. For positioning operation using 420mA:
a. Apply a 20mA signal between pins 3 and 4 – valve plug will not move at this time.
b. Apply a 4mA signal between pins 3 and 4 – valve plug will move to the lower, closed position.
c. If calibration of the analog input is desired to improve positional accuracy, an optional operation is listed in the
next section titled Analog Input Calibration.
7. For positioning operation using 15V:
a. Apply a 5V signal between pins 3 and 4 – valve plug will not move at this time.
b. Apply a 1V signal between pins 3 and 4 – valve plug will move to the lower, closed position.
c. If calibration of the analog input is desired to improve positional accuracy, an optional operation is listed in the
next section titled Analog Input Calibration.
8. The unit is now calibrated.
Analog Input Calibration
Improved positional accuracy may be obtained by calibrating the actuator to the analog signal input. The position of
the valve plug is linearly proportional to the analog control signal end points, with 4 mA/1V equating to fully closed
and 20 mA/5V equating to fully open.
1. Apply a 4 mA or 1V signal between pins 3 and 4 - valve plug will move to the fully open position.
2. Send a value of 1 to register 40004 or click Analog Cal at 0% in the configuration software.
3. Apply a 20 mA or 5V signal between pins 3 and 4 - valve plug will move to the fully closed position.
4. Send a value of 1 to register 40005 or click Analog Cal at 100% in the configuration software.
5. The unit is calibrated to your analog signal.
Start Up
WARNING
To avoid personal injury or property damage, be aware that the valve will move and respond to an input signal during start
up.

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1. Before turning on power to the unit, be sure that a closed signal is being commanded to the unit
D DryContact: contact is open
D L2e (Dual Dry Contact): Contact closed across pins 1 & 3
D Analog Input: signal < 4mA or 1V
D Modbus: position demand = 0
2. Turn on power to the unit
3. Apply a change in position demand to ensure unit responds properly
D DryContact:
D Closed contact between pins 1 & 2 will open the valve
D Dual contact / L2e only (40043=0) : Closed contact between pins 1 & 2 will open the valve. Closed contact
between pins 1 & 3 will close the valve
D Analog Input: valve will respond to proportional demand
D Modbus: valve will respond to positional demand in register 40001. 0 = fully closed and 100 = fully open.
4. If the valve does not respond as expected, proceed to Troubleshooting guide on page 15.
5. Check conduit ports
D Conduit seal must be in place within 450mm (18 inches) of the enclosure
D Unused conduit ports must be sealed with an explosionproof port plug
6. Replace the cover and tighten all 8 bolts to 20 Nm (15 ftlbs)
Troubleshooting
1. Unit does not move
a. Verify that 12VDC to 24VDC is present on the power terminals as shown on the cover
b. Verify that all wires are firmly attached on both ends
c. Verify that wires are connected to the correct terminals - see Wiring in the manual
d. Verify mode of operation (on/off or positioning) matches control signal
e. Verify mode of control (local or Modbus) matches control signal
2. Unit does not respond to 420mA signal
a. Verify that 12VDC to 24VDC is present on the power terminals as shown on the cover.
b. Verify that the 420mA signal is wired correctly and that the terminals are firmly on the wires.
c. Verify mode of operation matches control signal (local control: 40033=0, positioning: 40034=1).

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d. Check the value of the analog input in register 40025 (middle right of configuration software screen) to
determine if it is 0 or greater.
i. If register 40025 shows 0 and the circuit board is green (not blue), it is possible a 420mA signal was applied
without power to the power terminals and damage to the input circuitry has occurred. Contact your Emerson
sales office or Local Business Partner for further information.
3. Unit moves to fully open when 1V signal is applied and closed when 5V signal is applied
a. Unit is likely configured as an on/off unit with local control; on/off units can not be controlled as an analog
device.
i. If on/off control is desired, use a dry contact switch to control in local mode or change to Modbus mode to
control the unit
ii. If positioning control is desired, contact your Emerson sales office or Local Business Partner to upgrade your
actuator to positioning control.
4. Diagnostics show a Motor Stall Fault
a. The easyDrive electric actuator is designed to operate in a manner consistent with a pneumatic actuator. This
means that if the valve plug can not move to its commanded position, the actuator will stop, without damage,
and issue a Motor Stall Fault warning. When the command signal changes outside of the deadband (Modbus
register 40036), it will attempt to move again. Recalibrate the actuator span per instructions in the Startup
section of this manual.
5. Position on D4 is not accurate (proportional positioning units only)
a. If the valve plug opened during calibration, it is set to a D3. Change valve type to D4 and recalibrate.
b. If the local analog input is being used (420mA or 15V), the analog inputs of the actuator may be calibrated to
match the input signal. Follow instructions in Analog Input Calibration, found in the Calibration section of this
instruction manual.
Maintenance
Refer to figure 12.
Valve parts are subject to normal wear and must be inspected and replaced as necessary. The frequency of inspection
and maintenance depends on the severity of the service conditions.
WARNING
Avoid personal injury from sudden release of process pressure or bursting of parts. Before performing any maintenance
operations:
D Do not remove the actuator from the valve while the valve is still pressurized.
D Always wear protective gloves, clothing, and eyewear when performing any maintenance operations to avoid personal
injury.
D Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the
actuator cannot suddenly open or close the valve.
D Use bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure
on both sides of the valve. Drain the process media from both sides of the valve.
D Vent the power actuator loading pressure and relieve any actuator spring precompression.
D Use lock‐out procedures to be sure that the above measures stay in effect while you work on the equipment.
D The valve packing box may contain process fluids that are pressurized, even when the valve has been removed from the
pipeline. Process fluids may spray out under pressure when removing the packing hardware or packing rings.

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D Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
WARNING
For explosionproof applications, ensure the actuator cover is properly bolted before applying power to the actuator.
Personal injury or property damage may result from fire or explosion if power is applied to the actuator with the cover
removed in a hazardous area.
Do not remove the actuator cover for 10 minutes after power is disconnected if the UPS option is installed.
For explosion‐proof applications, install rigid metal conduit and a conduit seal no more than 457 mm (18 inches) from the
actuator. Personal injury or property damage may result from explosion if the seal is not installed.
Select wiring and/or cable glands that are rated for the environment of use (such as hazardous area, ingress protection, and
temperature). Failure to use properly rated wiring and/or cable glands can result in personal injury or property damage
from fire or explosion.
Wiring connections must be in accordance with local, regional, and national codes for any given hazardous area approval.
Failure to follow the local, regional, and national codes could result in personal injury or property damage from fire or
explosion.
Valve Plug and Seat Ring
Disassembly
Key Numbers are referenced in figures 11 and 12.
1. Isolate the control valve from the line pressure, release pressure from both sides of the valve body (key 1), and drain
the process media from both sides of the valve.
CAUTION
The following steps are intended to prevent damage to the valve plug (key 3) and seat ring (key 2) during the removal of the
bonnet and actuator.
2. For Positioning Actuators
•Command the valve to anywhere between 10% and 20% travel.
•Isolate power and signal.
•Proceed to step 3.
For ON/OFF Actuators
•Command the valve to open or close, and cut the power when the valve is at midstroke.
•Isolate power and signal.
•Proceed to step 3.
3. Break the hammer nut (key 6) loose with a hammer. Continue turning the hammer nut by using a hammer or a
large adjustable wrench, tightened around one ear of the hammer nut. If the bonnet is stuck on the valve, continue
to unscrew the hammer nut. The hammer nut will contact the spring pins (key 7) and will force the bonnet out of
the valve. Carefully lift the actuator, bonnet, and valve plug assembly from the valve body.
WARNING
The spring pins must always be in place during valve operation. They provide a safeguard against injury when the unit is
being disassembled.

Instruction Manual
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D4 Valve with easy-Drive Actuator
October 2017
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4. Use a socket wrench to loosen the seat ring (key 3).
5. Remove the seat ring (key 3) and seat ring gasket (key 9) from the valve body.
6. To replace the plug, the stem nut (key 42) must be removed to expose the groove pin (key 4). Open the
explosionproof enclosure (key 60), using a 13mm wrench.
7. Remove the stem nut (key 42) using a 11/16 inch wrench; insert a punch in the hole in the stem to restrict rotation
of the stem while removing the stem nut. The travel indicator (key 32) may need to be moved to expose the hole.
8. Push the stem downward just far enough to expose the groove pin (key 4) on the plug.
9. Remove the plug by driving out the groove pin and unscrewing the valve plug from the stem.
WARNING
Be careful to avoid damaging the seating surface on the valve plug or seat ring as damage in these areas will allow
excessive leakage at shutoff. Avoid damaging the highly polished valve stem surface. A damaged valve stem could cut the
packing and allow process fluid to leak to the atmosphere.
Table 7. Torque for Seat Ring (Key 3)
VALVE SIZE RECOMMENDED TORQUE
NPS NSm LbfSft
1 407 300
2 698 515
Assembly
1. Make sure the bonnet O‐ring (key 8) is on the bonnet and lubricated with lithium grease (key 49).
2. Install the plug (key 2) on the stem (key 47) and insert a new groove pin (key 4).
3. Push the plug and stem upward to ensure the threads on the top of the stem are exposed. Thread the stem nut (key
42) onto the top of the stem and tighten the stem nut (key 42) to 39 N•m (29lbf•ft). Insert a punch in the hole in
the stem to restrict rotation while tightening the stem nut.
4. Replace the top of the explosion proof enclosure (key 60) and tighten cap screws (key 64) to 20 N•m (15 lbf•ft).
5. Thoroughly clean the seat ring and bonnet threads in the valve body (key 1). Also clean the valve body seat ring
gasket surfaces.
6. Apply anti‐seize lubricant (key 54) to the threads of the seat ring (key 3), and its mating threads in the valve body.
7. Apply anti‐seize lubricant (key 54) to the seat ring gasket (key 9) and install into the valve body.
8. Screw the seat ring into the valve body. Use a socket wrench to tighten the seat ring to the torque values shown in
table 7. Remove all excess lubricant after tightening.
9. Lubricate (key 54) the threads on the valve body and hammer nut and the contact surfaces of the bonnet and
hammer nut flange. Install the bonnet and actuator assembly with pinned valve plug onto the valve body. Tighten
the hammer nut using an adjustable wrench until the nut stops turning. A few hammer blows will be required to
ensure that the assembly is tight.
Valve Packing
WARNING
Observe the warning at the start of the Maintenance section.

Instruction Manual
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D4 Valve with easy-Drive Actuator
October 2017
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The valve stem packing can only be accessed from within the valve body.
Disassembly
1. Disassemble the valve per steps 1 through 12 of the Valve Plug and Seat Ring Disassembly section in this instruction
manual.
2. Unscrew the packing retainer (key 10) from the bonnet (key 5).
3. Remove the five Belleville springs (key 11), packing spacer (key 14), packing (key 13), and two anti‐extrusion rings
(key 12) from the bonnet, using a formed wire hook. To aid in packing removal, the stem may be removed.
4. Clean and inspect the packing box wall to ensure that the packing surfaces are not damaged. If the surface
condition is damaged, and cannot be improved by light sanding, replace the bonnet by contacting your Emerson
sales office or Local Business Partner.
5. Inspect the valve stem for scratches or wear, and valve plug for wear or damage. Replace if necessary.
Figure 9. Fisher D4 Packing Installation
VALVE PLUG, BELLEVILLE SPRINGS, AND PACKING RETAINER
CORRECTLY INSTALLED AND TIGHTENED
BELLEVILLE SPRINGS FULLY ENCLOSED BY
THE PACKING RETAINER
PACKING RETAINER
(KEY 8)
UNTIGHTENED,
NOTE THE GAP
FULLY TIGHTENED,
NO GAP
UPPER PACKING
SPACER (KEY 48)

Instruction Manual
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D4 Valve with easy-Drive Actuator
October 2017
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Figure 10. Lubrication Locations on Packing
FEMALE PACKING ADAPTER
MALE PACKING ADAPTER
PACKING RING LUBRICATE WITH 3mm (1/8 INCH
BEAD) OF SUPPLIED HIGH PERFORMANCE
FLUORINATED GREASE
LUBRICATE WITH 3mm (1/8 INCH
BEAD) OF SUPPLIED HIGH PERFORMANCE
FLUORINATED GREASE
Assembly
Refer to figures 9, 10, 11, and 12.
1. If the stem was removed during packing disassembly, insert the stem back into the valve/actuator assembly.
2. Ensure the upper packing spacer (key 48) is installed, as shown in figure 9.
3. Using a non‐marring installation tool, such as a 12‐inch length of 1/2 inch PVC pipe, push the first anti‐extrusion
washer (key 12) fully into the packing box by hand. Then, use the packing spacer (key 14) to fully seat the
anti‐extrusion washer by firmly tapping the packing spacer against the anti‐extrusion washer with a hammer and
the PVC pipe.
4. Remove the packing spacer from the packing bore.
CAUTION
All D4 packing kits include a single use packet of high performance fluorinated grease. This is the only acceptable D4
packing lubricant.
Note
In the following procedure, carefully install each packing ring individually over the valve stem and push completely into the
packing box with a non‐marring tube. A 12‐inch length of 1/2 inch PVC pipe works well for this. It is recommended that the
lubricated packing rings be installed individually rather than pushed in as a set.
5. Apply a 3mm (1/8 inch) bead of the supplied high performance fluorinated grease (key 44) around the groove of
the female packing adaptor as shown in figure 10 and install over the valve stem (key 16).
6. Apply a 3mm (1/8 inch) bead of the supplied high performance fluorinated grease (key 44) around the groove of
the packing ring as shown in figure 10 and install over the valve stem.
7. Install the male packing adaptor, lower anti‐extrusion washer (key 10), and lower packing spacer over the valve
stem as shown in figure 9.