Dyna-Flo 590 Parts list manual

Model 590 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-590M0817A 1
Operation, Parts, and Instruction Manual
TABLE OF CONTENTS
General 2 Assembly 17
Scope 2 Stud Installation 17
Safety Caution 2 Ball and Shaft Assembly 17
Specifications 3 Ball Seal Installation 22
Unpacking 4 Body Outlet Installation 22
Installation 4 Flow Ring Installation 24
Valve Weight - Table 2 5 Live Loaded Packing 25
Line Bolt Placement - Figure 3 5 Actuator Mounting 25
Air Piping 5 Travel Adjustment 28
Periodic Inspection 8 Seal Carrier Torque Requirements - Table 7 28
Maintenance 8 Shaft Retainer & Retainer Screw Torque
Requirements - Table 8 28
Shaft Seal Maintenance 8
- Follower Shaft 9 Ball Support Post and Retainer Removal Tool 29
- Drive Shaft 10 Actuator / Valve Positions - Figure 36 30
Ball Seal Maintenance 11 Single Seal Cross Section - Figure 37 31
Actuator Removal 12 Dual Seal Cross Section - Figure 38 32
Disassembly 12 Parts 33
Body Outlet / Seal Protector Ring 13 Model Builder 40
Outboard Shaft Disassembly 14
Inboard Shaft Disassembly 15
Figure 1
6 Inch 590 with DFRP-112

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 590 Control Valve
P-590M0817A 2
Operation, Parts, and Instruction Manual
NOTICE These instructions are meant to be used with the Dyna-Flo 590 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 590 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 590 Control Valve.
SAFETY CAUTION
Only well trained experienced technicians should perform these procedures. Use safe work practices and lock out
procedures when isolating valves and actuators. It is also important to wear the proper protective equipment when
performing any installation or maintenance activity. Use only parts and materials rated for the process being used,
operating conditions, and environmental conditions products will be used in.
To avoid personal injury or installation damage as a result of the sudden release of process pressure or damage to
equipment, do not install the valve assembly where service conditions could exceed the limits stated in this manual,
sales bulletin or on the equipment nameplates. Use government codes, accepted industry standards and good piping
practices, and select proper pressure-relieving equipment for protection of your installation. Always be aware of
flammable process and instrument gas.
Always be aware of the hazards of actuators, especially spring-loaded actuators. Be sure that the actuator is
de-energized or in the failed position before performing any maintenance procedure.
These valves have dangerous pinch points. Never put your hands inside the valve unless you are certain that the ball
cannot rotate.

Model 590 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-590M0817A 3
Operation, Parts, and Instruction Manual
SPECIFICATIONS
Available Valve Configurations
The 4”, 6”, 8”, 10”, 12”, and 16” flangeless valves will mate
ASME Class 600 and 900. See Table 1 of Sales Bulletin.
Rotary ball valve assembly available with:
• Single Ball Seal
• Dual Ball Seal
• Flow Ring
Maximum Inlet Pressure
4 through 12 inch valve body consistent with Class 600 and
900 ASME B16.34.
16 inch valve body consistent with Class 600 ASME B16.34.
Maximum Allowable Shutoff Pressure Drop
Single Seal and Dual Seal: See Figure 10 of Sales Bulletin.
Flow Ring: Limited by the pressure/temperature rating of
the valve body.
Material Temperature Capabilities
Single Seal and Dual Seal:
-50oF to 180oF (-46oC to 82oC) LCC Body.
-20oF to 180oF (-29oC to 82oC) WCC* Body.
-50oF to 180oF (-46oC to 82oC) CF8M Body.
Flow Ring with Fluorocarbon O-Rings:
-50oF to 400oF (-46oC to 204oC) LCC Body.
-20oF to 400oF (-29oC to 204oC) WCC* Body.
-50oF to 400oF (-46oC to 204oC) CF8M Body.
*Note: WCC body material is special order.
Construction Materials
See Parts section of manual for material listings. Contact your
Dyna-Flo sales office for more information and other options.
Flow Direction (See Figures 37 & 38)
Single Seal Configuration: Forward flow only.
Dual Seal Configuration: Required for bidirectional flow
shutoff.
Flow Ring Configuration: Forward or reverse flow.
Actuator Mounting
Right-hand, or Left-hand (as viewed from seal end of valve).
In one of 4 positions (12 (Std.), 3, 6, and 9 o’clock) with
respect to the valve body in a horizontal pipe.
Maximum Ball Rotation
90 degrees.
Shutoff Classification
Single Seal and Dual Seal: 0.0001% of maximum valve
capacity (less than 1% of Class IV, ANSI/FCI 70-2 and
IEC 60534-4).
Flow Ring: 1% of maximum valve capacity
Flow Characteristic
Modified Equal Percentage
Valve Dimensions
See Figure 4 for valve diagram.
See Tables 5 & 6 for valve dimensions.
Approximate Valve Weight
See Table 2.
Valve Sizing Coefficients
See Table 9 of Sales Bulletin.
For more information and other options contact your Dyna-Flo
sales office.
Table 1
Model 590 Available Valve Size and ASME Rating
Valve Size Inch ASME Rating
4 600 900
6 600 900
8 600 900
10 600 900
12 600 900
16 600

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 590 Control Valve
P-590M0817A 4
Operation, Parts, and Instruction Manual
UNPACKING VALVE FROM SHIPPING
CONTAINER
Special Tools Required:
• Properly Rated Lifting Straps (2 – 4 Straps) See Table 2 for
valve weights.
• Lifting Device (Example: Crane)
Check the packing list, verify that the list includes all the
materials in the shipping container before unpacking.
Place the lifting straps around the neck of the actuator and
valve body (See Figure 2). Straps should be placed to avoid
damage to tubing and other mounted accessories.
INSTALLATION
Before You Begin:
• Read the General and Scope section of this manual (Page 2).
• Read Safety Caution (Page 2).
• Place the valve into the OPEN position, this helps to prevent
damage to the valve ball (Key 2) during installation.
• Sudden movement of actuator can cause damage or injury.
It helps to have the actuator de-energized as long as the
valve remains in the OPEN position.
• Use safe work practices and lock out procedures before
placing valve in-line.
Parts Required:
• Flange Studs (Key 51) Note: Flange Studs will need to span
the distance from one line flange, across the valve body, and
though the other line flange. (See Table 3 & 4 for stud
lengths & Figure 3 for stud placement)
• Long Cap Screws (Key 53) Note: Long Cap Screws pass
through the line flanges and thread directly into the valve
body. Long Cap Screws will be required for the outlet side of
the valve for single seal valve configurations. (See Table 3 &
4 for cap screw length and Figure 3 for cap screw placement)
• Short Cap Screws (Key 52) Note: Short Cap Screws pass
through the line flanges and thread directly into the valve
body. (See Table 3 & 4 for cap screw length and Figure 3 for
cap screw placement)
• Appropriate Line Flange Gaskets.
LIFTING STRAP
LIFTING STRAP
Installation Steps:
1Clean dirt, welding chips, scale, or other foreign material
from the line and flange surfaces.
2Valve may be installed in any orientation, although to
reduce stress and wear on valve assembly it is
recommended that valve be installed with the valve shaft
(Key 17) horizontal to the ground.
3 For Single Seal Construction
Center the valve in-line as indicated by flow arrow (See
Figure 37 & 38), standard flow direction has the seal
protector ring (Key 26) facing up stream.
For Dual Seal Construction
Center the valve in-line so the flow direction with the
highest pressure matches the direction of the flow arrow
(see Figure 36, 37, 38).
4Install the line flange gaskets.
5Apply anti-seize compound (Key A) to the threads of the
flange studs (Key 51) and cap screws (Keys 52 & 53).
6Tighten the flange studs and cap screws in even
increments in a crisscross pattern until the correct line bolt
torque specification is reached.
Figure 2
Suggested Lifting
Strap Placement

Model 590 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-590M0817A 5
Operation, Parts, and Instruction Manual
OUTLET SIDE (BACK OF VALVE)
INLET SIDE (FRONT OF VALVE)
Figure 3 Line Bolt Placement Example (10 Inch 590 Shown) See Figure 4 for alternative view
INSTALLATION (Continued)
AIR PIPING
WARNING:
Property damage, environmental harm, and personal injury can result from the use of supply gas other than clean,
non-corrosive, oil and moisture free air. Do not exceed the supply pressure indicated on the serial plate located on the actuator.
Before You Begin:
Note: Standard actuators accept ¼” (6 mm) NPT connections.
• Refer to the appropriate actuator instruction manual when necessary.
Piping Installation Steps:
1Use 3/8” (outside diameter) tubing (or equivalent) for air lines.
2Install the required line vents, valves, drains, seals, and filters to the actuator.
Table 2
Model 590 Approximate Valve Weight
Valve Size Inch lb (Kg)
4 160 (73)
6 290 (132)
8 490 (222)
10 760 (345)
12 950 (431)
16 1700 (771)
KEY 52 - SHORT CAP SCREWS
KEY 26 - SEAL PROTECTOR
RING
KEY 53 - LONG CAP SCREWS
KEY 51 - FLANGE STUDS
KEY 33 - BODY OUTLET

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 590 Control Valve
P-590M0817A 6
Operation, Parts, and Instruction Manual
Table 3
Model 590 Valve Dimensions - Flange Bolting - Class 600 Inch
Valve
Size
Dimensional Reference
RF RTJ TPI
IQTY. KQTY. LQTY. IQTY. KQTY. LQTY.
4” ----13.50 8 ----14.50 8 7/8 - 9
6” 4.63 4 4.63 4 16.25 8 4.88 4 4.88 4 16.25 8 1 - 8
8” 5.50 4 5.38 4 17.50 8 5.63 4 5.50 4 17.75 8 1-1/8 - 8
10” 6.25 4 6.38 4 20.75 12 6.50 4 6.50 4 20.75 12 1-1/4 - 8
12” 7.00 4 6.00 4 23.00 16 7.00 4 6.50 4 23.00 16 1-1/4 - 8
16” 7.75 4 7.75 4 26.00 16 8.00 4 8.00 4 26.50 16 1-1/2 -8
E
DC
B
S
A
FG
H
J
L
KI
FLOW
FLOW
Figure 4 Valve Dimensions and Line Bolting
52
51
53
50

Model 590 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-590M0817A 7
Operation, Parts, and Instruction Manual
Table 4
Model 590 Valve Dimensions - Flange Bolting - Class 900 Inch
Valve
Size
Dimensional Reference
RF RTJ TPI
IQTY. KQTY. LQTY. IQTY. KQTY. LQTY.
4” 4.88 4 4.88 4 14.75 4 4.88 4 5.13 4 14.75 4 1-1/8 - 8
6” 5.00 4 5.00 4 17.50 8 5.00 4 5.25 4 17.50 8 1-1/8 - 8
8” 6.00 4 5.88 4 19.00 8 6.00 4 6.13 4 19.00 8 1-3/8 - 8
10” 6.63 4 6.75 4 21.50 12 6.63 4 6.88 4 21.50 12 1-3/8 - 8
12” 7.25 4 6.63 4 24.00 16 7.25 4 7.50 4 24.00 16 1-5/8 - 8
Table 5
Model 590 Valve Dimensions Inch (mm)
Valve Size
Dimensional Reference
B SCDE
(Bore Diameter)
Spline Diameter Shaft Diameter
4” 8.19 (208) 1.00 (25.4) 1.25 (31.8) 6.38 (162) 7.75 (197) 3.00 (76.2)
6” 14.00 (356) 1.50 (38.1) 2.00 (50.8) 7.62 (194) 9.38 (238) 4.00 (101.6)
8” 14.00 (356) 2.00 (50.8) 2.50 (63.5) 10.62 (270) 12.88 (327) 6.00 (152.4)
10” 14.00 (356) 2.00 (50.8) 2.75 (69.9) 11.31 (287) 13.50 (343) 7.38 (187.5)
12” 14.00 (356) 2.00 (50.8) 3.00 (76.2) 12.75 (324) 15.00 (381) 9.00 (228.6)
16” 18.50 (470) 2.00 (50.8) 4.00 (101.6) 15.44 (392) 18.12 (460) 11.50 (292.1)
ASME Class: 600 and 900
• Envelope Dimensions are + / - 0.25 in. (6.4 mm)
• Face to Face Tolerance Per ASME
Table 6
Model 590 Valve Dimensions Continued Inch (mm)
Valve Size Dimensional Reference
A F G H J
4” 7.62 (194) 11.00 (279) 9.25 (235) 1.81 (46) 5/8 - UNC
6” 9.00 (229) 12.88 (327) 10.75 (273) 2.00 (51) 3/4 - UNC
8” 9.56 (243) 16.25 (413) 13.25 (337) 3.00 (76) 7/8 - UNC
10” 11.69 (297) 17.50 (445) 13.25 (337) 3.00 (76) 7/8 - UNC
12” 13.31 (338) 19.00 (483) 13.25 (337) 3.00 (76) 7/8 - UNC
16” 15.75 (400) 24.12 (613) 21.00 (533) 5.00 (127) 1-1/4—7UNC
ASME Class: 600 and 900
• Envelope Dimensions are + / - 0.25 in. (6.4 mm)
• Face to Face Tolerance Per ASME

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 590 Control Valve
P-590M0817A 8
Operation, Parts, and Instruction Manual
PERIODIC INSPECTION
Special Equipment Required:
• Bypass or block valves.
Before You Begin:
• Read Safety Caution (Page 2).
• Use safe work practices and lock out procedures.
• Disconnect supply lines (air or gas), electric power, or control
signal to the actuator. Sudden movement of actuator can
cause damage or injury, make sure actuator will not operate.
• Vent any pneumatic actuator loading pressure and relieve
any actuator spring preload if present.
• Relieve process pressure and drain the process fluid from up
and down stream of valve.
• Be aware of potentially hazardous process material that may
be present in-line and in-valve. Isolate the valve from
process pressure. Use a bypass or block valve if necessary,
or completely shut off the process. For dual seal valves,
relieve internal pressure by removing the pipe plug (Key 37).
See Figure 38 on Page 32.
Inspection Steps:
1Check for visible signs of leakage around all seal and
gasket areas.
2Check the valve for damage, especially damage caused by
corrosive fumes or process drippings.
3Clean and repaint the areas as required.
4Ensure all accessories, mounting brackets, and fasteners
are secure.
5Clean any dirt and foreign material from the valve shaft
(Key 17).
MAINTENANCE
Note: Shaft seals or live loaded packing and ball seals (Key 30)
should all be inspected frequently for leaks, wear and
damage. Maintenance to the shaft seals or live loaded packing
can be made while the valve is still in-line, the actuator must
be removed for drive shaft (Key 17) seal/pacing maintenance
(See Page 12 for Actuator Removal instructions).
Note: Perform ball seal (Key 30) maintenance when the control
valve will not properly shut off. Ball seal maintenance can be
performed without removing the actuator from the valve. Ball
seal maintenance cannot be performed with the valve in-line.
When removing the valve from pipe line be sure it is in the
OPEN position, verify the valve is open using the indicator
scale (Key 24) before removing from line.
Note: When testing the seal integrity of the valve using the
pipe plug port (dual seal configuration), it is recommended that
the pipe plug (Key 37) be replaced by a hand valve. A hand
valve will allow valve pressure to be relieved safely during
seat leak rate testing. See Figure 38 for pipe plug location.
Before You Begin:
• Read Safety Caution (Page 2).
• Determine if valve has shaft seals or live loaded packing
(See Figures 31 & 37).
• Determine if valve is single seal or dual seal (See Figures 37
& 38).
• Follow Steps 2 – 5 of PERIODIC INSPECTION Before you
begin.
SHAFT SEAL MAINTENANCE
Note: It is recommended that the follower shaft seal and the
drive shaft seal be replaced at the same time. The actuator
must be removed for drive shaft seal maintenance. For live
loaded packing see Page 25.
Special Tools Required:
• Mechanics Pick Set
Lubricants Required:
• Anti-Seize Compound (Key A)
• Silicone-based O-Ring Compound (Key B)
• White Petroleum Grease (Key C)

Model 590 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-590M0817A 9
Operation, Parts, and Instruction Manual
MAINTENANCE (Continued)
SHAFT SEAL MAINTENANCE (Continued)
Follower Shaft Seal (Outboard Seal)
Disassembly (See Figure 5)
1Remove the outboard seal carrier nuts (Key 3).
2Remove the outboard seal carrier (Key 6). Note: The seal
carrier o-ring (Key 7) may stick to the seal carrier and get
removed at the same time (Figure 5.1), remove the o-ring
after.
3Using a mechanics pick set, carefully remove the backup
ring (Key 8) and seal ring (Key 9).
4Inspect all parts for damage, including the follower shaft
(Key 21), damaged shafts must be replaced or repaired to
avoid leaks (See Page 12 for Disassembly Instructions).
Replace any damaged parts with new parts as necessary.
Follower Shaft Seal (Outboard Seal)
Reassembly (See Figure 5)
1Lubricate the backup ring (Key 8) with white petroleum
grease (Key C) and install into the outboard seal carrier
(Key 6).
2Lubricate the seal ring (Key 9) with white petroleum
grease (Key C) and install into the outboard seal carrier
(Key 6).
3Lubricate the seal carrier o-ring (Key 7) with silicone-
based compound (Key B) and install it onto the outboard
seal carrier (Key 6).
4Find the locator pin (Key 22), install the seal carrier (Key
6) onto the follower shaft (Key 21) making sure that the
locator pin is in alignment with the orientation hole in the
seal carrier.
5Apply anti-seize compound (Key A) to the threads of the
seal carrier studs (Key 4).
6Thread the seal carrier nuts (Key 3) onto the seal carrier
studs (Key 4) and tighten the nuts according to the torque
requirements in Table 7 (Page 28).
Figure 5 Follower Shaft Seal (Outboard Seal) Maintenance Diagram
B3
7
4
A
9
C
8
6
6
22
21
Figure 5.1
DIRECTION OF
INTERNAL PRESSURE
6
98
C
C

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 590 Control Valve
P-590M0817A 10
Operation, Parts, and Instruction Manual
MAINTENANCE (Continued)
SHAFT SEAL MAINTENANCE (Continued)
Drive Shaft Seal (Inboard Seal)
Disassembly (See Figure 6)
1Remove the actuator (See Page 12 for Actuator Removal
instructions).
2Remove the inboard seal carrier nuts (Key 3).
3Remove the inboard seal carrier (Key 5). Note: The seal
carrier o-ring (Key 7) may stick to the seal carrier and get
removed at the same time (Figure 6.1), remove the o-ring
after.
4Using a mechanics pick set, carefully remove the backup
ring (Key 8) and seal ring (Key 9).
5Inspect all parts for damage, including the drive shaft
(Key 17), damaged shafts must be replaced or repaired to
avoid leaks (See Page 12 for Disassembly Instructions).
Replace any damaged parts with new parts as necessary.
Reassembly (See Figure 6)
1Lubricate the backup ring (Key 8) with white petroleum
grease (Key C) and install it into the inboard seal carrier
(Key 5).
2Lubricate the seal ring (Key 9) with white petroleum
grease (Key C) and install it into the inboard seal carrier
(Key 5).
3Lubricate the seal carrier o-ring (Key 7) with silicone-
based compound (Key B) and install it onto the inboard
seal carrier (Key 5).
4Install the seal carrier (Key 5) over the drive shaft (Key
17) and into the bore.
5Apply anti-seize compound (Key A) to the threads of the
seal carrier studs (Key 4).
6Thread the seal carrier nuts (Key 3) onto the seal carrier
studs (Key 4) and tighten the nuts according to the torque
requirements in Table 7 (Page 28).
7Re-mount the actuator to the valve. See the Actuator
Mounting instructions on Page 25, refer to the appropriate
actuator instruction manual for more information. Figure 6 Drive Shaft Seal (Inboard Seal)
Maintenance Diagram
4
3
5
17
17
7
Figure 6.1
B
10 - DO
NOT REMOVE
4
A
3
DIRECTION OF
INTERNAL PRESSURE
5
98
C
C
8
C
5
9

Model 590 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-590M0817A 11
Operation, Parts, and Instruction Manual
MAINTENANCE (Continued)
BALL SEAL MAINTENANCE
Before You Begin:
• Read Safety Caution (Page 2).
• Refer to Maintenance Notes (Page 8).
Disassembly (See Figure 7)
1If the valve is still in-line, make sure that the valve is in
the OPEN position before it is removed from the pipe line.
Remove the valve from pipe line.
2Remove seal protector ring cap screws (Key 25).
3Remove the seal protector ring (Key 26).
4Remove the seal protector ring o-ring (Key 29).
5Remove the ball seal (Key 30).
6Remove the shims (Key 31).
7For Dual Seal construction, repeat Steps 2 to 6 above for
the opposite side of the valve.
8Inspect all parts (especially sealing surfaces) for damage,
replace parts with new parts as necessary.
Reassembly (See Figure 7)
Note: If the ball seal (Key 30) was damaged and replaced, it
will be necessary to re-adjust the ball deflection of the valve.
Ball seal repair kits will included extra shims for adjustment
purposes. For instructions on Ball Deflection see Step 18 of
Ball and Shaft Assembly on Page 20.
1Place the shims (Key 31) over the ball (Key 2).
2Set the ball seal (Key 30) over the ball (Key 2), make sure
it is centered.
3Lubricate the seal protector o-ring (Key 29) with silicone-
based o-ring compound (Key B) and place it in the valve.
4The seal protector ring (Key 26) is equipped with
threaded holes to attached eye hooks for lifting. Carefully
lift and lower the seal protector ring into position.
5Install the seal protector cap screws (Key 25) and tighten
them evenly in a crisscross pattern until snug.
6For Dual Seal construction, repeat Steps 1 to 5 above for
the other side of the valve.
Figure 7 Ball Seal Maintenance Diagram
B
29
25
26
31
30
1

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 590 Control Valve
P-590M0817A 12
Operation, Parts, and Instruction Manual
ACTUATOR REMOVAL
Note: Actuator removal does not require that the valve be
removed from the pipeline.
Before You Begin:
• Read Safety Caution (Page 2).
• Use safe work practices and lock out procedures.
• Disconnect supply lines (air or gas), electric power, or control
signal to the actuator. Sudden movement of actuator can
cause damage or injury, make sure actuator will not operate.
• Vent any pneumatic actuator loading pressure and relieve
any actuator spring preload if present.
Removal Steps:
1Refer to the appropriate actuator instruction manual for
more information regarding the actuator being removed.
2If the valve has been removed from the pipeline, place
the valve assembly on a flat work surface that can
support the weight. It helps to have block placed under the
valve to raise the valve off the work surface and allow for
free ball movement (See Figure 8.1).
3The actuator lever is clamped onto the valve shaft (Key
17), loosen the actuator lever (Key G) by loosening the
lever cap screw (Key F).
4Support the actuator and remove the actuator mounting
bolts (Key 50).
5Separate the valve and actuator. Sometimes the actuator
lever will bind on the valve shaft. Use caution when
removing the actuator, forceful removal could damage the
valve and actuator or cause the valve ball (Key 2) to be
moved off center.
DISASSEMBLY
Before You Begin:
• Read Safety Caution (Page 2).
• Use safe work practices and lock out procedures.
• Remove the actuator from the valve (See Actuator Removal
Instructions, Page 12).
• Relieve process pressure and drain the process fluid from up
and down stream of valve.
• Be aware of potentially hazardous process material that may
be present in-line and in-valve. Isolate the valve from
process pressure. Use a bypass or block valve if necessary,
or completely shut off the process. For dual seal valves,
relieve internal pressure by removing the pipe plug (Key 37).
• Remove the valve from pipeline, when removing the valve
from pipe line be sure it is in the OPEN position, verify the
valve is open using the indicator scale (Key 24) before
removing from line.
Figure 8 Actuator Removal Example
BLOCK BLOCK
F
5017
Figure 8.1 26
1
33
2
G

Model 590 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-590M0817A 13
Operation, Parts, and Instruction Manual
DISASSEMBLY (Continued)
BODY OUTLET / SEAL PROTECTOR RING REMOVAL
(See Figure 9)
1Remove the seal protector ring cap screws (Key 25).
2Carefully remove the seal protector ring (Key 26). The seal
protector ring is equipped with threaded holes for lifting
hooks, utilize these if possible.
3Remove the seal protector o-ring (Key 29).
4Remove the ball seal (Key 30).
5Remove the shims (Key 31).
6For Dual Seal construction, flip the valve body, repeat
Steps 1 to 5 above. (See Figure 10)
For Single Seal construction (See Figure 9)
ARemove the cap screws (Key 32) from the body outlet (Key
33).
BRemove the body outlet (Key 33) and body outlet gasket
(Key 34).
For Dual Seal construction (See Figure 10)
ARemove the adapter ring cap screws (Key 32).
BRemove the adapter ring (Key 36).
CRemove the body outlet (Key 33) and body outlet gasket
(Key 34).
7Inspect all parts and sealing surfaces for damage, replace
or repair parts as necessary.
Figure 9 Typical Single Seal Valve Disassembly Figure 10 Typical Dual Seal Valve Disassembly
26
29
31 25
30
33
32
34
1
35
27
3036
293132
1
34

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 590 Control Valve
P-590M0817A 14
Operation, Parts, and Instruction Manual
DISASSEMBLY (Continued)
OUTBOARD SHAFT DISASSEMBLY (FOLLOWER SHAFT)
Before You Begin:
• Have the inlet side of the valve facing up on work surface.
• Place valve in the OPEN position.
• Refer to Figure 11.
Special Tools Required:
• Rubber mallet or soft block
• Appropriate ball support post if possible (See Table 9 and
Figure 35).
• Shaft retainer (Key 16) removal tool (See Table 9 and Figure
35). Needed for Step 1 of Inboard Shaft Disassembly.
Disassembly Steps:
1 For valves with Live Loaded Packing refer to Page
25. Remove the outboard seal carrier nuts (Key 3).
2Remove the outboard seal carrier (Key 6). Note: The seal
carrier o-ring (Key 7) may stick to the seal carrier and get
removed at the same time, remove the o-ring after.
3Remove the retainer screw (Key 20) from the follower
shaft (Key 21). Note: it may be necessary to apply heat to
the retainer screw in order to loosen the thread locking
compound on the threads.
4Using a rubber mallet or soft block, carefully drive the
follower shaft (Key 21) towards the inboard end of the
valve until the split ring (Key 19) can be easily accessed.
5Remove the split ring (Key 19). Note: Split ring is two
pieces.
6Temporarily support the ball (Key 2) and remove the
follower shaft (Key 21). It is recommended that a ball
support post be installed into the follower shaft bore to
support the ball during Inboard (Drive) Shaft Disassembly.
7Remove the backup ring (Key 8) from the follower shaft
(Key 21).
8Remove the seal ring (Key 9) from the follower shaft
(Key 21).
9Remove the spacer (Key 10) from the follower shaft (Key
21).
10 Remove the bushing spacer shims (Key 11) from the
follower shaft (Key 21).
11 Remove the bushing (Key 12) from the follower shaft
(Key 21).
Figure 11 Outboard (Follower) Shaft Disassembly (Steps 1 - 3)
20 36
192
14
HEAT
721

Model 590 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-590M0817A 15
Operation, Parts, and Instruction Manual
DISASSEMBLY (Continued)
OUTBOARD SHAFT DISASSEMBLY (Continued)
Disassembly Steps (Continued):
12 Remove the thrust washer (Key 13) from the follower
shaft (Key 21).
13 Remove the thrust spacer (Key 14) from the follower
shaft (Key 21).
INBOARD SHAFT DISASSEMBLY (DRIVE SHAFT)
Disassembly Steps:
1 With the ball (Key 2) supported, remove the shaft retainer
(Key 16). Note: it may be necessary to immobilize the
valve shaft and apply heat to the shaft retainer to loosen
the thread locking compound on the threads. A shaft
retainer removal tool will be required.
2Remove the shaft retainer washer (Key 15).
3Remove the inboard seal carrier nuts (Key 3).
4Remove the inboard seal carrier (Key 5). Note: The seal
carrier o-ring (Key 7) may stick to the seal carrier and get
removed at the same time, remove the o-ring after.
5Support the valve ball (Key 2) with a sling to prevent
damage.
6Remove the drive shaft (Key 17), light force may be
required to dislodge the shaft from the polygon connection.
Figure 12 Outboard (Follower) Shaft Disassembly (Steps 4 - 6)
Figure 13 Follower Shaft Disassembly (Steps 7 - 13)
19
2
21
8
9
11
10
12
13
14
21
18

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 590 Control Valve
P-590M0817A 16
Operation, Parts, and Instruction Manual
DISASSEMBLY (Continued)
INBOARD SHAFT DISASSEMBLY (Continued)
Disassembly Steps (Continued):
7 Remove the backup ring (Key 8) from the drive shaft.
8Remove the seal ring (Key 9) from the drive shaft.
9Remove the spacer (Key 10) from the drive shaft.
10 Remove the bushing spacer shims (Key 11) from the drive
shaft.
11 Remove the bushing (Key 12) from the drive shaft.
12 Remove the thrust washer (Key 13) from the drive shaft.
13 Remove the thrust spacer (Key 14) from the drive shaft.
14 Continue to support the valve ball (Key 2) and remove the
ball support post.
15 Remove the valve ball (Key 2) from the body (Key 1).
16 Inspect all parts for damage or wear, replace or repair
parts as necessary. All soft parts such as seals and o-rings
should be replaced.
Figure 14 Inboard (Drive) Shaft Disassembly (Steps 1 - 4)
Figure 15 Drive Shaft Disassembly (Steps 7 - 13)
9
8
10 11
12
13
14
17
53 4 1
717
2
16
15
4
HEAT
BALL
SUPPORT
POST
SHAFT RETAINER
REMOVAL TOOL

Model 590 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-590M0817A 17
Operation, Parts, and Instruction Manual
ASSEMBLY
Before You Begin:
• Read Safety Caution (Page 2).
• Use safe work practices and lock out procedures.
• Clean and inspect all parts.
• Replace or repair damaged parts. Replace all soft parts
(Seals, o-rings, gaskets, live loaded packing).
Special Tools Required:
• Rubber mallet or soft block
• Appropriate ball support post if possible (See Table 9 and
Figure 35)
• Felt Marker
• Feeler Gauge
Lubricants Required:
• Anti-Seize Compound (Key A)
• Silicone-based O-Ring Compound (Key B)
• White Petroleum Grease (Key C)
• Medium Strength Thread Locking Compound (Key D)
STUD INSTALLATION
1If the studs (Key 4) were replaced, removed, or never
installed, apply anti-seize compound (Key A) to the threads
of the end of the stud without a material stamp.
2Thread the studs (Key 4) into the valve body (Key 1)
anti-seize coated end first until they are completely
threaded into the valve body.
BALL AND SHAFT ASSEMBLY
1Using a felt marker, mark the position of the pin holes of
the follower shaft (Key 21) on the bottom and top of the
follower shaft for future reference.
2Apply anti-seize compound (Key A) to the seal parts
portion of the drive shaft (Key 17) and follower shaft
(Key 21).
3Apply anti-seize compound (Key A) to both faces of the
thrust washer (Key 13) and to the outside surface of the
bushing (Key 12) (times 2 for the other shaft parts).
4Install the thrust spacer (Key 14), thrust washer (Key 13),
and bushing (Key 12) onto the drive shaft (Key 17) and
follower shaft (Key 21) as shown in Figures 16 & 17.
5Set assembled shafts aside. Figure 16 Outboard (Follower) Shaft Assembly
12
18 B
21 A
14
13 A
12 A
STEP 1
13
14
18
21
A

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 590 Control Valve
P-590M0817A 18
Operation, Parts, and Instruction Manual
ASSEMBLY (Continued)
BALL AND SHAFT ASSEMBLY (Continued)
6 Place the valve body (outlet side up) onto blocks (see
Figure 19 for block placement) on a flat work surface that
can support the full assembled valve weight.
7Using slings, carefully insert the ball (Key 2) into the
outlet side of the valve body (Key 1).
8Continue to support the valve ball (Key 2) and insert
the appropriate ball support post (See Table 9 & Figure
35) if available.
9Insert the drive shaft assembly (Figure 17) into the valve
and align the positioning marks of the drive shaft (Key 17)
and polygon connection on the ball (Key 2). See Figure 20.
10 Apply anti-seize compound (Key A) to the shaft retainer
washer (Key 15) and insert it into the shaft bore of the ball
(Key 2). See Figure 21.
11 Apply medium strength thread locking compound (Key D)
to the threads of the shaft retainer (Key 16). Thread the
shaft retainer into the drive shaft (Key 17) till hand tight.
Immobilize the drive shaft and tighten the shaft retainer
to the appropriate torque value (See Table 8) using the
shaft retainer removal tool (see Table 9 and Figure 35 for
tool dimensions). See Figure 21.
12 Support the ball (Key 2), remove the ball support post.
13 Apply silicone-base o-ring compound to the pins (Key 18).
Install the pins into the pin holes of the follower shaft
(Key 21) flat end first and only in far enough to be able to
slide through the bushing (see Figure 16). Note: The
silicone-based compound will help keep the pins in place
during assembly. Refer to the marks made on the follower
shaft (Key 21) during Step 1 to help align the pins with the
pin grooves on the valve ball (Key 2).
14 Install the outboard (follower) shaft assembly (Figure 16)
into the valve body assembly. Push the shaft assembly into
the valve far enough that the split ring (Key 19) groove on
the follower shaft (Key 21) is visible on the inside of the
valve ball (Key 2). See Figure 22.
15 Install the split ring (Key 19) and push the follower shaft
assembly back out of the valve until it stops in
place. See Figure 22.
Figure 17 Inboard (Drive) Shaft Assembly
Figure 18 Seal Ring Orientation Diagram (Step 18)
12 A
13 A
14
17 A
14
13
12
17
DIRECTION OF
INTERNAL PRESSURE
5
98

Model 590 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-590M0817A 19
Operation, Parts, and Instruction Manual
BLOCK BLOCK
BLOCK BLOCK
Figure 19 Support Block Placement (Step 6)
Align Index Marks
NOTE:
For rare circumstances when the alignment mark is not visible (on the 10 inch ball for example), move the ball into the fully open
position inside the valve body and insert the tapered polygon end connection of the shaft into the ball so that the alignment mark
of the shaft polygon is placed into the corner of the ball polygon that faces the open end of the valve ball (parallel to the flow bore
of the valve).
Figure 20 Proper Polygon to Shaft Alignment Index Marks (Step 9)
Figure 21 Inboard (Drive) Shaft Installation (Steps 9 - 11)
11
SEE NOTE
16 D
15A
2
INBOARD (DRIVE)
SHAFT ASSEMBLY
(SEE FIGURE 17) BALL SUPPORT
POST
SHAFT RETAINER
REMOVAL TOOL
OUTLET SIDE INLET SIDE
A 4

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 590 Control Valve
P-590M0817A 20
Operation, Parts, and Instruction Manual
Figure 22 Outboard (Follower) Shaft Installation (Steps 14 - 15)
Figure 23 Outboard (Follower) Shaft Installation (Step 16)
ASSEMBLY (Continued)
BALL AND SHAFT ASSEMBLY (Continued)
16 Apply medium strength thread locking compound to
the threads of the retainer screw (Key 20), thread the
retainer screw into the follower shaft (Key 21) until the
face of the retainer screw is flush with the face of the ball
(Key 2). If installed properly, the pins (Key 18) will
engage and slide into the pin grooves of the ball (Key 2).
See Figure 23.
17 Flip the valve assembly (See Figure 19 for support block
placement on outlet side of valve body).
18 Install 6 shims (Key 11) into the outboard (follower) shaft
bore of the valve body (Key 1). Temporarily install the
spacer (Key 14). Install the backup ring (Key 8) and seal
ring (Key 9) into the seal carrier (Key 6) (see Figure 18 for
seal ring orientation). Install the seal carrier (Key 6) and
thread on the nuts (Key 3). Note: See Figure 5 for
locator pin (Key 22) alignment. Tighten the seal carrier
nuts completely but DO NOT TORQUE them into place.
Note: For Live Loaded Packing just temporarily install the
live loaded packing box (Key 48) instead of the seal carrier.
19 Push the drive shaft (Key 17) towards the follower shaft
(Key 21) in an attempt to center the valve ball (Key 2).
Using a feeler gauge, measure the gap between the valve
body (Key 1) and valve ball (Key 2) on both the inboard
and outboard sides. The gap between the valve ball and
valve body should be even on both ends, the maximum
deviation of the gap should be no more than 0.005 inches
(0.127 mm), see Figure 25.
20 Shims (Key 11) are 0.010 inches (0.254 mm) thick, once
the gap has been measured the number of shims may
need to be adjusted to center the ball (Key 2).
19 182 2 1819
OUTBOARD (FOLLOWER) SHAFT ASSEMBLY (SEE FIGURE 16)
20 D
18
19
20 19
18
VALVE BALL AND SHAFT VIEW ROTATED 90° FOR CLARITY
DO NOT ROTATE VALVE BALL DURING INSTALLATION.