Dyna-Flo DF269 Parts list manual

Model DF269 Control Valve
Dyna-Flo Control Valve Services Ltd.
Phone: 780 •469 •4000 Toll Free: 1 •866 •396 •2356 Fax: 780 •469 •4035 Website: www.dynaflo.com
P-269M0117A 1
Operation, Parts, and Instruction Manual
TABLE OF CONTENTS
Introduction 2 Fail Open Actuator Disassembly 6
General 2 Body and Packing Reassembly 7
Scope 2 Fail Closed Actuator Resassembly 8
Specifications 3 Fail Open Actuator Resassembly 9
Unpacking 4 Gap Diagram Valve Body - Figure 2 10
Installation 4 1 Inch Angle Body Diagram - Figure 3 10
Air Piping 5 2 Inch Fail Closed Cross Section - Figure 4 13
Periodic Inspection 4 1 Inch Fail Open Cross Section - Figure 5 12
Body and Packing Disassembly 5 Parts 13
Fail Closed Actuator Disassembly 5 Model Builder 16
Figure 1 DF269 Control
Valve

Dyna-Flo Control Valve Services Ltd.
Phone: 780 •469 •4000 Toll Free: 1 •866 •396 •2356 Fax: 780 •469 •4035 Website: www.dynaflo.com
Model DF269 Control Valve
P-269M0117A 2
Operation, Parts, and Instruction Manual
NOTICE These instructions are meant to be used with the Dyna-Flo DF269 Technical Bulletin as they refer to
Figures and Tables therein. If you do not have the Technical Bulletin, contact Dyna-Flo immediately, or
visit www.dynaflo.com
Each control valve is factory checked. Check the calibration for the specific application, before a valve
is put into service.
It is the intention of this document to provide users with an accurate guide for safe installation and
maintenance of the DF269 Control Valve. Revisions and updates are available at above mentioned website.
GENERAL
The following instructions are to be thoroughly reviewed and understood prior to installing, operating or performing
maintenance on this equipment. Work on this equipment should be performed by experienced personnel. Throughout
the manual, safety and caution notes appear and must be strictly followed, to prevent serious injury or equipment
malfunction.
SCOPE
The control valve configuration and construction materials were selected to meet particular pressure, temperature, and process
conditions. Some material combinations are limited in their pressure and temperature ranges. Do not apply any other conditions to
the valve without first contacting your Dyna-Flo sales office.
This manual is written to be a practical and useful guide maintaining the Dyna-Flo DF269 Control Valve.
CAUTION
To avoid personal injury or installation damage as a result of the sudden release of process pressure or the breaking of
parts, do not install the valve assembly where service conditions could exceed the limits stated in this manual or on
the equipment nameplates. Use government codes, accepted industry standards and good piping practices to select
pressure-relieving equipment for protection of your installation. It is also important to wear the proper
protective equipment when performing any installation or maintenance activity.
INTRODUCTION
The Dyna-Flo Model DF269 Control Valve is a rugged globe style control valve intended for demanding applications in process
control. It is suitable for a wide range of applications, especially high pressure and severe service. The compact design makes
installation and maintenance more convenient than traditional valve and actuator assemblies while still offering the same
functionality. The Model DF269 is designed to accept instrumentation requiring valve stem linkages making it an excellent
control valve.

Model DF269 Control Valve
Dyna-Flo Control Valve Services Ltd.
Phone: 780 •469 •4000 Toll Free: 1 •866 •396 •2356 Fax: 780 •469 •4035 Website: www.dynaflo.com
P-269M0117A 3
Operation, Parts, and Instruction Manual
SPECIFICATIONS
Port Diameters
1/4”, 3/8”, 1/2”, 3/4”, and 1”
See Table 1.
Sizes and Connection Styles
Size: NPS 1 & 2 inch
Rating: ASME 150 / 300 / 600 / 900
Connections: NPT / RF / RTJ
See Table 1 for details and Port Diameters.
Maximum Pressure Drops
See Tables 6 & 7 of Sales Bulletin.
Standard Shut-off Classifications
Class IV Shut-off
In accordance with ASME / FCI 70.2
Flow Characteristics
Equal Percentage.
Flow Direction
Preferred Up (Optional Down)(See Sales Bulletin).
Valve Plug Travel
3/4 inch (19 mm).
Body Style
Globe body style and Angle body style (Figure 3).
Material Temperature Capabilities
Body Assembly
-46 to 150oC (-50 to 300oF)
Actuator Assembly
-40 to 82oC (-40 to 180oF)
Valve Cross Section
See Figures 4 & 5.
Packing Type
•PTFE V-ring
•Live-loaded low emission
Actuator Pressure Connections
NPS 1/4 inch NPT.
Maximum Actuator Casing Pressure
50 Psig (3.45 Bar).
Effective Actuator Diaphragm Area
69 inches2(452 cm2).
For more information and other options contact your Dyna-Flo
sales office.
Maximum Pressure and Temperature Ratings1
200OF (93OC) 300OF (150OC)
NPS 1-2 inch NPT 2,250 Psig (155.13 Bar) 2,182 Psig (150.44 Bar)
NPS 1-2 inch Class 600 1,500 Psig (103.42 Bar) 1,454 Psig (100.25 Bar)
NPS 1-2 inch Class 900 2,250 Psig (155.13 Bar) 2,185 Psig (150.65 Bar)
1- The limitations shown are as per ASME B16.34. Refer to the pressure temperature ratings in this standard for all other flange
ratings. Do not exceed these ratings.

Dyna-Flo Control Valve Services Ltd.
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Model DF269 Control Valve
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Operation, Parts, and Instruction Manual
UNPACKING VALVE FROM SHIPPING
CONTAINER
Check the packing list against materials received while
unpacking the valve. The Packing List describes valve and
accessories in each shipping container.
When lifting the valve from shipping container, it is advisable
to use appropriate lifting straps placed on the neck of the
actuator and valve body to balance the lift. Position the lifting
straps to avoid damage to the tubing and mounted accessories.
INSTALLATION
WARNING
Refer to the General and Scope sections of this
Manual (See Page 2) prior to beginning Installation.
Before installing these valves, be sure to inspect the flange
mating surfaces on both the valve and the pipeline flanges.
Clean dirt, welding chips, scale or other foreign material from
the line and flange surfaces. Check the pipeline flanges for
alignment and look for signs of gasket leakage through the line
flanges. Check the hammer nut (Key 30) for proper tightness.
Make repairs if necessary.
1When operating conditions allow, install the valve for the
preferred flow direction. Refer to Table 2 for guide lines on
shut-off pressure drops. The valve assembly may be
installed in any position unless limited by vibration
considerations.
NOTE
The normal method of installation is with the
actuator in vertical position above the valve body.
WARNING
Keep hands, hair and clothing away from all moving
parts when operating the valve! Serious injury can
result from failure to do so!
2 When possible, stroke the valve and check for smooth
operation through the full-stroke. Unsteady valve stem
movement could be an indication of an internal problem.
Air Piping
The actuators are designed to accept 1/4” NPT connection. Use
3/8” OD tubing (or equivalent) for all air lines. All connections
must be free of leaks.
CAUTION
Do not exceed supply pressure indicated on serial
plate located on top of the actuator casing (Key 16).
PERIODIC INSPECTION
CAUTION
Use safe work practices and lock out procedures
when isolating valves and actuators! Always be
aware of flammable instrument gas!
1 Avoid personal injury from sudden release of process
pressure! Before performing any maintenance operation:
A Disconnect any power supply media lines providing air
/ gas pressure, electric power, or a control signal to
the actuator. Ensure the actuator cannot suddenly
operate the valve.
B Isolate the valve from process pressure with bypass
valves or completely shut off the process. Relieve
process pressure, and drain the process fluid from the
up and down stream of the valve.
C Vent the pneumatic actuator loading pressure.
D Use Safety lock-out procedures to be sure that the
above provisions stay in effect while you complete the
work on your equipment.
2 Check for process fluid leakage to the atmosphere through
the body to bonnet joint and (if equipped) any NPT
connection.
3Examine the valve for damage caused by corrosive fumes
or process drippings.
4Clean the valve and repaint areas of severe oxidation.
5Ensure all accessories, mounting brackets and fasteners
are secure.
6Clean any dirt and foreign material from the plug stem.

Model DF269 Control Valve
Dyna-Flo Control Valve Services Ltd.
Phone: 780 •469 •4000 Toll Free: 1 •866 •396 •2356 Fax: 780 •469 •4035 Website: www.dynaflo.com
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Operation, Parts, and Instruction Manual
BODY AND PACKING DISASSEMBLY
(Fail Open and Fail Closed)
For Fail Open Actuators
Vent the pneumatic actuator loading pressure and relieve any
actuator spring preload.
For Fail Closed Actuators
It is necessary to apply pneumatic loading pressure to the
actuator prior to separating the body (Key 1) from the
bonnet (Key 2) in order to unseat the valve plug (Key 3).
Failure to unseat the valve plug when removing the bonnet
assembly could damage the valve plug and seat ring
(Key 4).
CAUTION
The body can be serviced in-line, after all process
pressure and fluid are released. Disassembly of the
actuator should take place with the actuator and
bonnet removed from the valve body. Once removed,
secure the actuator and bonnet in a clamping device
before proceeding with disassembly.
All Key references to follow are from Figure 2, 4, & 5.
1Once the body (Key 1) is secured, separate the body from
the bonnet (Key 2). DF269 bonnets are held in place using
a hammer nut. A small sledge hammer is commonly used
to loosen the hammer nut in a counterclockwise direction.
Once the hammer nut is loosened it should move freely by
hand. If the hammer nut or bonnet do not move freely be
cautious of a build up of process pressure. Once the bonnet
is disengaged from the body, carefully remove it with the
plug and stem still attached.
2Inspect the bonnet & hammer nut threads in the body for
damage.
3Inspect the washer (Key 18) between the hammer nut and
bonnet for damage. If it is necessary to replace the washer,
actuator disassembly must be done before removal.
NOTE
For trim replacement only, follow steps 22-26 under
applicable actuator disassembly. If replacing
packing, follow steps 19-26 under applicable
actuator disassembly.
FAIL CLOSED ACTUATOR DISASSEMBLY
All Key references to follow are from Figures 2 & 4.
4Vent the pneumatic actuator loading pressure if pressure is
still present from bonnet / body disassembly.
5 Begin by removing the 10 short (1”) cap screws (Key 26)
from the actuator casings (Key 16 & 17) using two 9/16”
wrenches or an impact wrench with a 9/16” socket. Be sure
to leave the 2 long cap screws.
CAUTION
The springs inside the actuator casings are still under
compression. It is necessary to take proper safety
precautions and to follow proper procedures.
6Once the 10 short cap screws have been completely
removed, begin loosening the two long (1-1/4”) cap screws
in an alternating pattern. During removal, try to keep the
upper casing (Key 16) level until the springs are no longer
under compression, then completely remove the long cap
screws and upper casing.
7Remove the actuator springs (Key 15) from the diaphragm
plate (Key 24).
8 A 5/8” wrench is required to remove the stem nut
(Key 29).
9Remove the diaphragm plate spacer (Key 25) and inspect the
spacer for damage.
10 Remove the diaphragm plate (Key 24). Inspect the
diaphragm plate for corrosion and damage.
11 Remove the diaphragm (Key 14) and inspect surface for
wear, stretching and tears. Replace if necessary.
12 Remove the diaphragm plate washer (Key 23).
13 To replace o-ring under lower casing use a 1-1/2” deep
socket or wrench to remove the bonnet lock nut (Key 22).
14 Remove the flat washer (Key 21) and lower diaphragm
casing (Key 17). Take note of the position of the lower
casing for reassembly purposes.
15 Remove the casing o-ring (Key 7) and replace.

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Operation, Parts, and Instruction Manual
FAIL CLOSED ACTUATOR DISASSEMBLY
(Continued)
16 Remove the hammer nut (Key 30) from over the bonnet,
inspect the threads for damage and corrosion.
17 Remove the washer (Key 18) from the hammer nut seating
surface of the bonnet, inspect the washer for damage or
corrosion and replace if necessary.
18 With the bonnet removal and actuator disassembly
complete, pull the plug and stem assembly (Keys 5 & 3)
out of the bonnet (Key 2).
19 Remove the cage bushing (Key 20), spring washers
(Key 12), packing spacer (Key 31), and packing (Key 11)
from the bonnet bore. Inspect all parts for damage and
corrosion. Retain the cage bushing, spring washers, and
spacer for use in the reassembly of the valve.
20 Using a mechanics pick-set, remove the stem bushing
(Key 13) and remove the o-ring (Key 6) from the bonnet.
Be careful not to scratch or damage o-ring surfaces.
21 With all the parts removed from the bonnet, clean and
inspect all gasket and packing sealing surfaces. Check
threads for damage.
NOTE
For standard valve trim, the cage and seat ring are
one piece. A two piece cage and seat ring design is
used for optional trim materials but are sold together
as one unit.
22 With the bonnet/body separated, remove the cage / seat
ring (Key 4) assembly from the valve body. There is a
small hole at the top of the cage, remove the cage/seat
ring using a pick set through the removal hole. Avoid
removing the cage using the cage windows.
23 Wipe the seat ring surface of the body and inspect for signs
of leakage, corrosion, or other marks.
24 Using a mechanics pick set, remove the o-ring (Key 10) on
the side of the seat ring. Inspect the o-ring groove for
corrosion or damage and replace the o-ring.
25 Inspect all sealing and guiding surfaces for damage.
Seating surfaces can be re-machined or re-lapped if
required.
26 Inspect the inside machined surfaces of the body for
damage or corrosion. Replace or repair the body if
necessary.
FAIL OPEN ACTUATOR DISASSEMBLY
All Key references to follow are from Figures 2 & 4.
1Vent the pneumatic actuator loading pressure if pressure is
still present from bonnet / body disassembly.
2 Begin by removing the 10 short (1”) cap screws (Key 26)
from the actuator casings (Key 16 & 17) using two 9/16”
wrenches or an impact wrench with a 9/16” socket. Be sure
to leave the 2 long cap screws.
CAUTION
The springs inside the actuator casings are still under
compression. It is necessary to take proper safety
precautions and to follow proper procedures.
3Once the 10 short cap screws have been completely
removed, begin loosening the two long (1-1/4”) cap screws
in an alternating pattern. During removal, try to keep the
upper casing (Key 16) level until the springs are no longer
under compression, then completely remove the long cap
screws and upper casing.
4 A 5/8” wrench is required to remove the stem nut
(Key 29).
5Remove the diaphragm plate washer (Key 23).
6Remove the diaphragm (Key 14) and inspect surface for
wear, stretching and tears. Replace if necessary.
7Remove the diaphragm plate (Key 24). Inspect the
diaphragm plate for corrosion and damage.
8Remove the diaphragm plate spacer (Key 25) and inspect the
spacer for damage.
9Remove the actuator springs (Key 15) from the diaphragm
plate (Key 24).
10 To replace o-ring under lower casing use a 1-1/2” deep
socket or wrench to remove the bonnet lock nut (Key 22).
11 Remove the flat washer (Key 21) and lower diaphragm
casing (Key 17). Take note of the position of the lower
casing for reassembly purposes.
12 Remove the casing o-ring (Key 7) and replace.

Model DF269 Control Valve
Dyna-Flo Control Valve Services Ltd.
Phone: 780 •469 •4000 Toll Free: 1 •866 •396 •2356 Fax: 780 •469 •4035 Website: www.dynaflo.com
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Operation, Parts, and Instruction Manual
FAIL OPEN ACTUATOR DISASSEMBLY
(Continued)
13 Remove the hammer nut (Key 30) from over the bonnet,
inspect the threads for damage and corrosion.
14 Remove the washer (Key 18) from the hammer nut seating
surface of the bonnet, inspect the washer for damage or
corrosion and replace if necessary.
15 Remove the casing o-ring (Key 7) and replace.
16 Remove the hammer nut (Key 30) from over the bonnet,
inspect the threads for damage and corrosion.
17 Remove the washer (Key 18) from the hammer nut seating
surface of the bonnet, inspect the washer for damage or
corrosion and replace if necessary.
18 With the bonnet removal and actuator disassembly
complete, pull the plug and stem assembly (Keys 5 & 3)
out of the bonnet (Key 2).
19 Remove the cage bushing (Key 20), spring washers (Key
12), packing spacer (Key 31), and packing (Key 11) from
the bonnet bore. Inspect all parts for damage and
corrosion. Retain the cage bushing, spring washers, and
spacer for use in the reassembly of the valve.
20 Using a mechanics pick-set, remove the stem bushing (Key
13) and remove the o-ring (Key 6) from the bonnet. Be
careful not to scratch or damage o-ring surfaces.
21 With all the parts removed from the bonnet, clean and
inspect all gasket and packing sealing surfaces. Check
threads for damage.
NOTE
For standard valve trim, the cage and seat ring are
one piece. A two piece cage and seat ring design is
used for optional trim materials but are sold together
as one unit.
22 With the bonnet/body separated, remove the cage / seat
ring (Key 4) assembly from the valve body.
23 Wipe the seat ring surface of the body and inspect for signs
of leakage, corrosion, or other marks.
24 Using a mechanics pick set, remove the o-ring (Key 10) on
the side of the seat ring. Inspect the o-ring groove for
corrosion or damage and replace the o-ring.
25 Inspect all sealing and guiding surfaces for damage.
Seating surfaces can be re-machined or re-lapped if
required.
26 Inspect the inside machined surfaces of the body for
damage or corrosion. Replace or repair the body if
necessary.
BODY AND PACKING REASSEMBLY
(Fail Open and Fail Closed)
WARNING
When reassembling a DF269, the assembly of the
actuator must take place with the bonnet / actuator
detached from valve. To assembly a Fail Closed
actuator while the valve plug is in the body may
cause damage to the plug and seat.
NOTE
For standard valve trim, the cage and seat ring are
one piece. A two piece cage and seat ring design is
used for optional trim materials but are sold together
as one unit.
1Clean and inspect the seating surface in the valve body.
Make sure the valve body is free of debris, oil, and grease.
2Coat the seat ring o-ring (Key 10) with o-ring lubricant and
install it into the lower outside o-ring groove on the seat
ring (Key 4).
3Place the seat ring / cage assembly into the valve body
(Key 1) and press it down to assure it is positioned
properly as shown in Figure 4.
4With the bonnet (Key 2) sitting actuator side up, lubricate
the stem o-ring (Key 6) with o-ring lubricant and insert the
o-ring into the o-ring groove in the top of the bonnet.
5Install the stem bushing (Key 13) into the stem bore, push
the bushing into the bonnet until the bushing “snaps” into
place. Once in place, the bushing should sit just above the
stem o-ring.
Turn the bonnet upside down

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Operation, Parts, and Instruction Manual
BODY AND PACKING REASSEMBLY
(Fail Open and Fail Closed) (Continued)
6Prepare the components for reassembling the packing
assembly by using the appropriate packing lubricant and
lubricate the outside of the packing rings (Key 11). Stack
the packing in a set as shown in Figure 2 and insert the set
into the packing bore with the open end of the “V”pointing
down. The first ring of packing needs to make contact with
the bottom of the packing bore.
7Lubricate the lower outside diameter bonnet o-ring (Key 9)
and install it into the o-ring groove.
8Lubricate the plug o-ring (Key 8) with o-ring lubricant and
slide it over the valve plug (Key 3) but do not slide it in the
o-ring groove.
9Coat the threads of the valve stem (Key 5) with Nickel
based anti-seize. Thread the valve plug into the end of the
valve stem until the holes of the plug and stem are in
alignment.
10 Insert the pin (Key 19) into the valve plug and stem. The
pin should slide easily through both plug and stem holes, if
pin is difficult to install the holes might be out of
alignment. Use a small punch to push the pin completely
into position and once in position slide the o-ring into the
groove on the valve plug securing the pin.
11 Slide the cage bushing (Key 20) onto the valve stem (Key
5) so that it rests on top of the valve plug (Key 3). See
Figure 2 for the correct orientation of the bushing.
12 Next slide the spring washers (Key 12) onto the valve
stem. Be sure the spring washers are in the correct order
(See Figure 2). Place the packing spacer (Key 31) over the
spring washers as shown in Figure 2. Use caution not
to scratch the valve stem.
13 Slide the plug/stem assembly up through the packing and
into the bonnet window. Slide the travel indicator (Key 33)
over the stem and continue sliding the stem through the
rest of the bonnet until the cage bushing is inserted into
the bottom of the bonnet. Be careful not to damage the
stem o-ring and bushing when the stem comes through the
top of the bonnet.
15 Apply Nickel based anti-seize to both sides of the bonnet
washer (Key 18) and place the washer onto the bonnet
(Key 2). Coat the threads of the hammer nut (Key 30) with
anti-seize and place it onto the bonnet so that it rests on
the bonnet washer.
NOTE
Once the packing, washers, spacer, and bushing are
installed into the packing bore there will be a gap of
0.06 to 0.08 inches between the lip of the cage
bushing and the bottom of the bonnet. See Figure 2
for detail.
16 See specific Fail Open or Fail Closed Actuator Reassembly
instructions for remaining assembly information.
FAIL CLOSED ACTUATOR REASSEMBLY
WARNING
When reassembling a Fail Closed DF269, the
assembly of the actuator must take place with the
bonnet / actuator detached from valve.
NOTE
A conversion from Fail Open to Fail Closed or vice versa
may require more or less springs depending on the
required shutoff pressure needed (See Table 2).
1Lubricate the o-ring (Key 7) for the top of the bonnet and
install. Place the lower diaphragm casing (Key 17) over the
valve stem so that it rests on the casing o-ring (Key 7).
Orientate the NPT connection of the casing so that it is
centered within the bonnet window (Key 2). Reference
Figure 4 for correct NPT orientation.
2Install the flat washer (Key 21) over the valve stem so that
it rests on the lower casing.
3Apply nickel based anti-seize compound to the exposed
bonnet threads.
4While holding the lower casing in place, thread the bonnet
locknut (Key 22) onto the bonnet using a 1-1/2” deep
socket tighten to 200 lbf-ft.
5Install the diaphragm plate washer (Key 23) over the valve
stem (Key 5).
6Place the diaphragm (Key 14) over the stem so that it is in
contact with the diaphragm plate washer. Be sure to align
the holes of the diaphragm with the bolt holes on the lower
casing (Key 17).

Model DF269 Control Valve
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FAIL CLOSED ACTUATOR REASSEMBLY
(Continued)
7Slide the diaphragm plate (Key 24) over the stem so that it
rests with the flat face against the diaphragm. Reference
Figure 4 for correct diaphragm plate placement.
8Install the diaphragm plate spacer (Key 25) over the stem
so that it rests on top of the diaphragm plate.
9Apply medium strength liquid thread locker to the threads
of the stem nut (Key 29) and thread it onto the valve stem.
It may be necessary to insert a screw driver through
the hole in the valve stem while tightening the stem
nut to keep the stem from turning. Using a 5/8” socket,
torque down the stem nut to 100 lbf-in.
10 Place the springs (Key 15) on the diaphragm plate in a
circular pattern, evenly spaced centered on the plate
embossments.
11 Place the upper casing (Key 16) over the springs, be sure
that the NPT connection of the upper casing is aligned with
the NPT connection of the lower casing. Also, be sure that
the bolt holes of the upper casing are aligned with the
bolt holes of the lower casing.
12 Install both of the long (1-1/4”) cap screws (Key 27)
opposite from each other and in line with the valve body.
Partially thread a nut (Key 28) onto one of the long cap
screws.
13 It may be necessary to compress the springs by pushing
slightly on the upper casing to thread a nut onto the
second long cap screw. Using two 9/16” wrenches or
socket set, evenly tighten the two long cap screws using
an alternating pattern. Until the 10 short cap screws can
be installed and the nuts threaded on. Completely tighten
the 12 nuts.
14 Install the vent cap (Key 32) to the NPT connection on the
upper casing.
15 It will be necessary to apply supply pressure to the
actuator in order to assemble the bonnet / actuator and
valve body.
16 Coat the large diameter guide section of the valve plug
(Key 3) with mechanical assembly grease. Carefully place
the plug into the cage (Key 4) lowering the bonnet
assembly into position over the valve.
FAIL OPEN ACTUATOR REASSEMBLY
WARNING
When reassembling a Fail Open DF269, the assembly
of the actuator must take place with the bonnet /
actuator detached from valve.
NOTE
A conversion from Fail Open to Fail Closed or vice versa
may require more or less springs depending on the
required shutoff pressure needed (See Table 2).
1Lubricate the o-ring (Key 7) for the top of the bonnet and
install. Place the lower diaphragm casing (Key 17) over the
valve stem so that it rests on the casing o-ring (Key 7).
Orientate the NPT connection of the casing so that it is
centered within the bonnet window (Key 2). Reference
Figure 5 for correct NPT orientation.
2Install the flat washer (Key 21) over the valve stem so that
it rests on the lower casing.
3Apply nickel based anti-seize compound to the exposed
bonnet threads.
4While holding the lower casing in place, thread the bonnet
locknut (Key 22) onto the bonnet using a 1-1/2” deep
socket tighten to 200 lbf-ft.
5Install the diaphragm plate spacer (Key 25) over the stem.
6Set the required springs (Key 15) onto the inside of the
lower casing, spacing them equally in a circular pattern.
Position the springs so that they will line up with the raised
embossments of the diaphragm plate (Key 24).
7Place the diaphragm plate over the valve stem so that the
concave face touches the springs and the embossments sit
inside the spring.
8Place the diaphragm (Key 14) over the stem so that it is in
contact with the diaphragm plate. Make sure the holes on
the diaphragm are aligned with the bolt holes on the
casing.
9Install the diaphragm plate washer (Key 23) over the valve
stem so that it rests on top of the diaphragm.

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10 Apply medium strength liquid thread locker to the threads
of the stem nut (Key 29) and thread it onto the stem.
11 It may be necessary to insert a screw driver into the hole
on the valve stem to keep the stem from turning while
tightening the stem nut. Using a 5/8” socket, torque down
the stem nut to 100 lbf-in.
12 Place the upper casing (Key 16) over the springs, be sure
that the NPT connection of the upper casing is aligned with
the NPT connection of the lower casing. Also, be sure that
the bolt holes of the upper casing are aligned with the
bolt holes of the lower casing.
13 Install the two long (1-1/4”) cap screws (Key 27) opposite
each other making sure they are in line with the valve body
(this is to prevent future complications). Install the 10
short (1”) cap screws (Key 26) and thread a nut (Key 28)
onto all 12 cap screws. Using two 9/16” wrenches or socket
set, completely tighten all the nuts and cap screws.
14 Install the vent cap (Key 32) to the NPT connection on the
lower casing.
15 Coat the large diameter guide section of the valve plug
(Key 3) with mechanical assembly grease. Carefully place
the plug into the cage (Key 4) lowering the bonnet
assembly into position over the valve.
16 Apply Nickel based anti-seize to the outside threads of the
valve body (Key 1). Make sure the window of the bonnet is
perpendicular to the body and thread the hammer nut (Key
30) onto the threads of the valve body. Using a small
sledge hammer, tighten the hammer nut until it stops
moving. Once the hammer nut is tight the packing inside
the bonnet should have reached the proper load pressure.
2
11
31
12
20 3
0.06 - 0.08
inch gap
Figure 2 DF269 Gap Diagram Valve Body
Figure 3 DF269 1 Inch Angle Body Diagram

Model DF269 Control Valve
Dyna-Flo Control Valve Services Ltd.
Phone: 780 •469 •4000 Toll Free: 1 •866 •396 •2356 Fax: 780 •469 •4035 Website: www.dynaflo.com
P-269M0117A 11
Operation, Parts, and Instruction Manual
2
3
1
4
5
21
7
9
8
10
11
12
13
14
15
17
16
18
19
29
25
23
22
6
33
31
20
30
24
26
28
27
32
Note: Casing (Keys 16 & 17) is rotated 90O
to show the NPT connections.
Figure 4 DF269 Fail Closed Cross Section with 2 inch NPT Valve Body

Dyna-Flo Control Valve Services Ltd.
Phone: 780 •469 •4000 Toll Free: 1 •866 •396 •2356 Fax: 780 •469 •4035 Website: www.dynaflo.com
Model DF269 Control Valve
P-269M0117A 12
Operation, Parts, and Instruction Manual
2
3
1
4
5
6
7
9 8
10
11
12
13
14 15
17
16
18
19
21
31
33
32
22
24
29 23
26 27
28
25
20
30
Note: Casing (Keys 16 & 17) is rotated 90O
to show the NPT connections.
Figure 5 DF269 Fail Open Cross Section with 1 inch NPT Valve Body

Model DF269 Control Valve
Dyna-Flo Control Valve Services Ltd.
Phone: 780 •469 •4000 Toll Free: 1 •866 •396 •2356 Fax: 780 •469 •4035 Website: www.dynaflo.com
P-269M0117A 13
Operation, Parts, and Instruction Manual
Parts List
Key Description Material Part Number
1Body If you need a body as a replacement part, order by valve size, serial
number and desired material.
2Bonnet LCC DF20251X01D
3Valve Plug
1/4 INCH PORT S17400 DH1150 DF206014X1D
3/8 INCH PORT S17400 DH1150 DF206038X1D
1/2 INCH PORT S17400 DH1150 DF206012X1D
3/4 INCH PORT S17400 DH1150 DF206034X1D
1 INCH PORT S17400 DH1150 DF206100X1D
1/4 INCH PORT S30300 / Tungsten Carbide DF206014X7D
3/8 INCH PORT S30300 / Tungsten Carbide DF206038X7D
1/2 INCH PORT S30300 / Tungsten Carbide DF206012X7D
3/4 INCH PORT S30300 / Tungsten Carbide DF206034X7D
1 INCH PORT S30300 / Tungsten Carbide DF206100X7D
4Cage / Seat Ring Assembly
1/4 INCH PORT S17400 DH1150 DF208014X1D
3/8 INCH PORT S17400 DH1150 DF208038X1D
1/2 INCH PORT S17400 DH1150 DF208012X1D
3/4 INCH PORT S17400 DH1150 DF208034X1D
1 INCH PORT S17400 DH1150 DF208100X1D
1/4 INCH PORT Tungsten Carbide DF208014X7D
3/8 INCH PORT Tungsten Carbide DF208038X7D
1/2 INCH PORT Tungsten Carbide DF208012X7D
3/4 INCH PORT Tungsten Carbide DF208034X7D
1 INCH PORT Tungsten Carbide DF208100X7D
5Valve Stem S20910 DF20352X01D
6Stem O-Ring HNBR DF10210X01D
7Casing O-Ring HNBR DF10209X01D
8Pin O-Ring HNBR DF20781X01D
9Bonnet O-Ring HNBR DF20783X01D
10 Seat Ring O-Ring HNBR DF20788X01D
11 Packing Set PTFE / CPTFE DF10206X01D
12 Spring Washers NO7718 Part of Spring Pack
13 Stem Bushing Nylon DF40418X01D
14 Diaphragm Nitrile / Nylon DF20404X01D
15 Springs Steel / Zinc DF20701X01D

Dyna-Flo Control Valve Services Ltd.
Phone: 780 •469 •4000 Toll Free: 1 •866 •396 •2356 Fax: 780 •469 •4035 Website: www.dynaflo.com
Model DF269 Control Valve
P-269M0117A 14
Operation, Parts, and Instruction Manual
Parts List
Key Description Material Part Number
16 Upper Diaphragm Casing Steel / Zinc DF20408X01D
17 Lower Diaphragm Casing Steel / Zinc DF20401X01D
18 Bonnet Washer S30200 DF20215X01D
19 Groove Pin S31600 DF40303X01D
20 Cage Bushing S17400 DH1150 DF20216X01D
21 Flat Washer Zinc Plated Steel FWZN100
22 Bonnet Lock Nut Steel DF10208X01D
23 Diaphragm Plate Washer S30300 DF10406X01D
24 Diaphragm Plate Steel DF20403X02D
25 Diaphragm Plate Spacer S30300 DF20212X01D
26 Cap Screw Zinc Plated Steel H5FZ38.100
27 Long Cap Screw Zinc Plated Steel H5FZ38.114
28 Nut Zinc Plated Steel NHFZ38
29 Stem Nut Zinc Plated Steel NHCZ38
30 Hammer Nut LF2 DF20208X01D
31 Packing Spacer S31600 Part of Spring Pack
32 Vent Plastic Y602-12D
33 Travel Indicator Plastic DF20221X01D
34 Nameplate Steel NAME18DF2ZD
35 Casing Sticker Vinyl DF20219X01D

Model DF269 Control Valve
Dyna-Flo Control Valve Services Ltd.
Phone: 780 •469 •4000 Toll Free: 1 •866 •396 •2356 Fax: 780 •469 •4035 Website: www.dynaflo.com
P-269M0117A 15
Operation, Parts, and Instruction Manual
Our Commitment to Quality
Dyna-Flo is committed to continuous improvement. While all efforts have been made to ensure the accuracy of the content in
this document, modifications or improvements to the information, specifications, and designs may occur at any time without
notice. This document was published for informational purposes only, and does not express or imply suitability, a warranty,
or guarantee regarding the products or services described herein or their use or applicability.
Neither Dyna-Flo Control Valve Services Ltd., nor any of their affiliated entities assumes responsibility for the selection, use
and maintenance of any product. Responsibility for selection, use and maintenance of any product remains with the purchaser
and end-user.
DF269 Spring Pack Kit
Description Part Number
Spring Washers (Key 12) & Packing Spacer (Key 31) DF10219X01D
Parts Ordering
Whenever corresponding with Dyna-Flo about a Model DF269 control valve, refer to the actuator nameplate or the back of the
valve body for the unit serial number. Please order by the complete part number (as given in the Parts List) of each part required.

Dyna-Flo Control Valve Services Ltd.
Phone: 780 •469 •4000 Toll Free: 1 •866 •396 •2356 Fax: 780 •469 •4035 Website: www.dynaflo.com
Model DF269 Control Valve
P-269M0117A 16
VALVE SIZE 1
11 INCH 22 INCH
BODY STYLE G
GGLOBE STYLE TANGLE STYLE
ACTUATOR STYLE C
CFAIL CLOSED OFAIL OPENED
SPRING RANGE 3
3SIZE 69 ACTUATOR WITH 0-20 PSIG OPERATING
SIGNAL 6SIZE 69 ACTUATOR WITH 0-35 PSIG OPERATING SIGNAL
NUMBER OF SPRINGS 6
33 SPRINGS 66 SPRINGS
ASME RATING B
A150 B 300 C600 D900
F900 NPT
CONNECTION STYLE N
NNPT F RF JRTJ
TRIM SIZE 14
14 1/4 INCH 38 3/8 INCH 12 1/2 INCH 34 3/4 INCH
10 1 INCH
TRIM MATERIAL S
SS17400 DH 1150 TS30300 / TUNGSTEN CARBIDE
SPECIAL X
XSPECIAL
SAMPLE PART NUMBER: DF269-1GC3-6BN-14S-X
DF269 - - - -
MODEL NUMBERING SYSTEM