Dyna-Flo 570 Parts list manual

Model 570, 571, 573 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
TABLE OF CONTENTS
General 2 Maintenance 13
Scope 2 Actuator Removal 14
Specifications 3 Disassembly 15
Valve Assembly / Dimensions - Figure 2 5 Packing Removal 15
Flange Stud Measuring Method - Figure 3 6 Ball Seal Removal 16
570 Valve Dimensions - Table 2 4 Ball and Shaft Removal 18
Mounting Pad Dimensions - Tables 8 & 9 7-8 Bearing Removal 23
571 / 573 Valve Dimensions - Table 3 5 Bearing Driver Construction Dimensions 25
570 Flange Stud Lengths - Table 4 6 Assembly 26
571 / 573 Flange Stud Lengths - Table 5 6 Bearing Installation 26
Flange Stud Diameters - Table 6 7 Ball / Shaft Installation 27
Flange Stud Quantity - Table 7 7 Packing Installation 35
Unpacking 9 Ball Seal Installation 40
Installation / Actuator Mounting 10 3 to 12 Inch Ball / Shaft Connection 46
Periodic Inspection 13 570 / 571 / 573 Cross Sections - Figures 71-75 48-51
Mounting - Figures 5 / 6 11 Parts 52
Mounting Styles and Positions - Table 14 12 Model Builder 60

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Model 570, 571, 573 Control Valve
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Operation, Parts, and Instruction Manual
NOTICE These instructions are meant to be used with the Dyna-Flo 570 Series 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 570 Series Control Valves. 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 570 Series 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.

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Operation, Parts, and Instruction Manual
SPECIFICATIONS
Maximum Pressure / Temperature Ratings
Consistent with applicable pressure / temperature ratings per
ASME B16.34. Refer to Table 17 of the Sales Bulletin.
Maximum Allowable Shutoff Pressure Drop
Refer to Tables 18 & 19 of the Sales Bulletin.
750 Psig (5,171 kPag) @ 100oF (38oC) (Standard Construction)
Material Temperature Capabilities
Valve Body:
Standard: -50oF to 450oF (-46oC to 232oC) LCC
Optional: High Temp -20oF to 800oF (-29oC to 427oC) WCC
Packing:
PTFE: -50oF to 450oF (-46oC to 232oC)
Graphite: -325oF to 1000oF (-198oC to 538oC)
Live Loaded PTFE: -50oF to 450oF (-46oC to 232oC)
(for 100 ppm service requirements)
Live Loaded Graphite: 20oF to 600oF (-7oC to 316oC)
(for 100 ppm service requirements)
20oF to 700oF (-7oC to 371oC)
(for non-environmental service requirements)
Refer to Tables 17-19 of the Sales Bulletin.
Construction Materials
Refer to Table 16 of the Sales Bulletin for construction
materials.
Contact your Dyna-Flo sales office for more information and
other options.
Flow Direction
Forward (through seal into ball).
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
• Composition Ball Seal: Class VI
•Metal Ball Seal: Class IV
• Classes and testing per ANSI/FCI 70-2 and IEC 60534-4.
• Tested at the service pressure drop, or 50 Psig (345 kPag),
whichever is lower
Valve Dimensions
Refer to Figures 2 & 3 for valve diagram.
Refer to Tables 4 - 13 for valve dimensions.
Refer to Tables 4 to 7 for flange stud dimensions.
Valve and Actuator Assembly Weight
Refer to Tables 2 & 3 of the Sales Bulletin.
Options
Line Flange Bolting - Tables 4 to 7.
Stainless Steel Construction.
Internal Coatings.
Shaft Connections:
- Splined (Standard)
- Square (Optional - 1” to 6” Valves)
- Keyed (Optional - 8” to 16” Valves)
For more information and other options contact your Dyna-Flo
sales office.

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Table 2
Model 570 Valve Dimensions Inch (mm)
Valve / Actuator Size Dimensional Reference
A
1” 4.00 (102)
1-1/2” 4.50 (114)
2” 4.88 (124)
3” 6.50 (165)
4” 7.62 (194)
6” 9.00 (229)
8” 9.56 (243)
ASME Class: 150 / 300 / 600
•Envelope Dimensions are + / - 0.25 in. (6.4 mm)
•Face to Face Tolerance Per ANSI/ISA 75.08.02
Table 3
Model 571 and 573 Valve Dimensions Inch (mm)
Valve / Actuator Size Dimensional Reference
A
1” 4.00 (102)
1-1/2” 4.50 (114)
2” 4.88 (124)
3” 6.50 (165)
4” 7.62 (194)
6” 9.00 (229)
8” 9.56 (243)
10” 11.69 (297)
12” 13.31 (338)
16” 16.00 (406)
ASME Class: 571 = 150, 573 = 300
•Envelope Dimensions are + / - 0.25 in. (6.4 mm)
•Face to Face: All sizes except for 16” are per ANSI/ISA
75.08.02. 16” sizes are per ASME B16.10 Short only.
Table 1
Available Valve Configurations
Valve Model End Connection Body Material Valve Size
inch Valve Rating
570
Flangeless
Mates with ASME Class
150/300/600
Raised Face Flanges
LCC
CG8M
1 / 1-1/2 / 2 ASME Class 150/300/600
3 & 4 ASME Class 150
ASME Class 300/600
6 & 8 ASME Class 150/300/600
571
Flanged
Mates with ASME Class 150
Raised Face Flanges
LCC / WCC / CG8M 1 / 1-1/2 / 2 / 3 / 4 / 6 / 8 / 10 /
12 / 16 ASME Class 150
573
Flanged
Mates with ASME Class 300
Raised Face Flanges
LCC / WCC / CG8M 1 / 1-1/2 / 2 / 3 / 4 / 6 / 8 / 10 /
12 / 16 ASME Class 300

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Operation, Parts, and Instruction Manual
Figure 2 Typical Valve Assembly Diagram and Dimensions
A
MODEL 571 & 573
L
K
MODEL 570
I
MM
O
N
N
1 - 2” VALVE
J
S
SPLINED SHAFT
J
S
Q
Q
(SQUARE)
P
1” - 6” VALVES
SQUARE SHAFT
DETAIL
J
ST
U
W
8” - 16” VALVE KEYED SHAFT DETAIL
3” TO
16”
VALVES
Centering Studs
44
44 44

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Table 4
Model 570 Line Flange Stud Lengths Inch (mm) - Refer to Figure 2.
Valve Size
(inches)
I
Class 150 Class 300 Class 600
1 6.94 (176) 7.94 (202) 7.94 (202)
1-1/2 7.44 (189) 8.81 (224) 8.81 (224)
2 8.31 (211) 9.31 (237) 9.31 (237)
3 10.00 (254) 11.00 (279) 11.25 (286)
4 11.25 (286) 12.00 (305) 13.50 (343)
6 13.50 (343) 14.25 (362) 16.25 (413)
8 13.50 (343) 15.25 (387) 16.75 (426)
MEASURE FROM FIRST FULL THREAD TO
FIRST FULL THREAD
Figure 3
Flange Stud Measuring
Method
Table 5
Model 571 and 573 Flange Stud Lengths Inch (mm) - Refer to Figure 2.
Valve Size
Inch
571 573
KLKL
1 2.88 (73) 3.12 (79) 3.69 (94) 3.94 (100)
1-1/2 3.12 (80) 3.62 (92) 4.25 (108) 4.50 (114)
2 3.44 (87) 3.94 (100) 3.94 (100) 4.19 (106)
3 3.94 (100) 4.19 (106) 4.75 (121) 5.25 (133)
4 3.94 (100) 4.69 (119) 5.00 (127) 5.50 (140)
6 4.50 (114) 5.00 (127) 5.50 (140) 6.00 (152)
8 5.00 (127) 5.25 (133) 6.00 (152) 6.50 (165)
10 5.25 (133) 5.75 (146) 6.81 (173) 7.31 (186)
12 5.25 (133) 6.00 (152) 7.31 (186) 7.81 (198)
16 5.25 (133) 6.00 (152) 7.50 (191) 8.25 (210)

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Table 7
Flange Stud Quantity
Valve Size
Inch
Number of Studs Required (Double for Models 571 & 573)
Class 150 Class 300 Class 600
1 4 Consult Dyna-Flo Consult Dyna-Flo
1-1/2 4 Consult Dyna-Flo Consult Dyna-Flo
24 8 8
34 8 8
48 8 8
6 8 12 12
8 8 12 12
10 (571 & 573 ONLY) 12 16 N/A
12 (571 & 573 ONLY) 12 12 N/A
16 (571 & 573 ONLY) 20 20 N/A
Table 6
Flange Stud Diameters and Threads Per Inch (TPI)
Valve Size
Inch
TPI
Class 150 Class 300 Class 600
1 Consult Dyna-Flo Consult Dyna-Flo Consult Dyna-Flo
1-1/2 Consult Dyna-Flo Consult Dyna-Flo Consult Dyna-Flo
2 5/8” - 11 5/8” - 11 5/8” - 11
3 5/8” - 11 3/4” - 10 3/4” - 10
4 5/8” - 11 3/4” - 10 7/8” - 9
6 3/4” - 10 3/4” - 10 1” - 8
8 3/4” - 10 7/8” - 9 1-1/8” - 7
10 (571 & 573 ONLY) 7/8” - 9 1” - 8 N/A
12 (571 & 573 ONLY) 7/8” - 9 1-1/8” - 7 N/A
16 (571 & 573 ONLY) 1” - 8 1-1/4” - 7 N/A
Table 8
Model 570 Valve Mounting Pad Dimensions Inch (mm) - Refer to Figure 2.
Valve Size
Inch Dimensional Reference
NMO
1 / 1-1/2 / 2 0.56 (14.2) 4.62 (117) —
3 / 4 / 6 0.56 (14.2) 6.00 (152) 1.25 (31.8)
80.69 (17.5) 9.25 (235) 1.81 (46.0)

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Table 9
Model 571 & 573 Valve Mounting Pad Dimensions Inch (mm) - Refer to Figure 2.
Valve Size
Inch Dimensional Reference
NMO
1 / 1-1/2 / 2 0.56 (14.2) 4.62 (117) —
3 / 4 / 6 0.56 (14.2) 6.00 (152) 1.25 (31.8)
8 / 10 / 12 0.69 (17.5) 9.25 (235) 1.81 (46.0)
16 3/4-10 UNC (M20x 2.5) 10.75 (273) 2.00 (50.8)
Table 10
Valve Shaft Diameters Inch (mm) - Refer to Figure 2.
Valve Size Inch Shaft Diameter Inch (mm)
1 1/2 (12.7)
1-1/2 & 2 5/8 x 1/2 spline (15.9 x 12.7 spline)
3 & 4 3/4 (19.1)
6 1 (25.4)
8 & 10 1-1/4 (31.8)
12 1-1/2 (38.1)
16 (571) 2-1/8 x 2 (54.0 x 50.8)
16 (573) 2-1/8 (54.0)
Table 11
Model 570, 571, and 573 Splined Shaft Dimensions Inch (mm) - Refer to Figure 2.
Valve Size
Inch
570 571 573
JSJSJS
1 7.38 (188) 1/2 (12.7) 7.38 (188) 7.38 (188) 7.38 (188) 7.38 (188)
1-1/2 7.38 (188) 5/8 X 1/2
(15.9 X 12.7) 7.38 (188) 5/8 X 1/2 (15.9 X 12.7) 7.38 (188) 5/8 X 1/2 (15.9 X 12.7)
2 7.38 (188) 5/8 X 1/2
(15.9 X 12.7) 7.38 (188) 5/8 X 1/2 (15.9 X 12.7) 7.38 (188) 5/8 X 1/2 (15.9 X 12.7)
3 8.44 (214) 3/4 (19.1) 8.44 (214) 3/4 (19.1) 8.44 (214) 3/4 (19.1)
4 8.44 (214) 3/4 (19.1) 8.44 (214) 3/4 (19.1) 8.44 (214) 3/4 (19.1)
6 8.44 (214) 1 (25.4) 8.44 (214) 1 (25.4) 8.44 (214) 1 (25.4)
8 8.19 (208) 1-1/4 (31.8) 8.19 (208) 1-1/4 (31.8) 8.19 (208) 1-1/4 (31.8)
10 N/A N/A 8.19 (208) 1-1/4 (31.8) 8.19 (208) 1-1/4 (31.8)
12 N/A N/A 8.19 (208) 1-1/2 (38.1) 8.19 (208) 1-1/2 (38.1)
16 N/A N/A 14.00 (356) 2-1/8 x 2
(54.0 x 50.8)) 14.00 (356) 2-1/8 (54.0)

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Table 12
Model 570, 571, and 573 Keyed Shaft Dimensions Inch (mm) - Refer to Figure 2.
Valve Size
Inch
570 571 & 573
JSUTWJSUTW
8
5.05
(128.3)
1-1/4
(31.8)
1.50
(38.1)
1-1/8
(28.6)
1.63
(41.4)
5.05
(128.3)
1-1/4
(31.8)
1.50
(38.1)
1-1/8
(28.6)
1.63
(41.4)
8” Valve Shafts use a 1/4” x 1.37” Key Stock.
10 —————
5.05
(128.3)
1-1/4
(31.8)
1.50
(38.1)
1-1/8
(28.6)
1.63
(41.4)
10” Valve Shafts use a 1/4” x 1.37” Key Stock.
12 —————
5.10
(129.5)
1-1/2
(38.1)
1.50
(38.1)
1-3/8
(34.9)
1.75
(44.5)
12” Valve Shafts use a 5/16” x 1.34” Key Stock.
Table 13
Model 570, 571, and 573 Square Shaft Dimensions Inch (mm) - Refer to Figure 2.
Valve Size
Inch
Dimensional Reference
JSPQ
1 Consult Dyna-Flo Consult Dyna-Flo Consult Dyna-Flo Consult Dyna-Flo
1-1/2 Consult Dyna-Flo Consult Dyna-Flo Consult Dyna-Flo Consult Dyna-Flo
2 3.24 (82.3) 5/8 (15.9) 0.75 (19.1) 0.431 (11.0)
3 3.82 (97.0) 3/4 (19.1) 0.75 (19.1) 0.431 (11.0)
4 3.82 (97.0) 3/4 (19.1) 0.75 (19.1) 0.431 (11.0)
6 5.07 (128.8) 1 (25.4) 1.00 (25.4) 0.667 (16.9)
LIFTING STRAP
UNPACKING VALVE FROM SHIPPING
CONTAINER
Special Tools Required:
• Properly Rated Lifting Straps (2 – 4 Straps) refer to Table 2
of the Sales Bulletin 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 (Figure 4). Straps should be placed to avoid damage
to tubing and other mounted accessories.
Figure 4 Suggested Lifting Strap Placement

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INSTALLATION
Before You Begin:
• Read the General and Scope section of this manual (Page 2).
• Read Safety Caution (Page 2).
• The following instructions assume that an actuator is already
mounted to the valve. It is recommended that an actuator
be mounted to the valve and bench set prior to installation,
but not necessary. For Actuator Mounting Instructions refer
to Page 12.
• Place the valve into the OPEN position, this helps to prevent
damage to the valve ball (Key 6) during installation. It is
important that the back edge of the ball never be rotated
past the ball seal, damage to the seal will occur.
• 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 44) Note: Flange Studs will very
depending on valve size and model. Refer to Figures 2
and 3, and Tables 4 to 7 for stud size and quantity. The Model
570 is designed to utilize long studs to assist in centering the
valve in-line. Models 571 and 573 use shorter studs to
connect the valve flanges with the line flanges, these studs
do not center the valve in the pipeline.
• Appropriate Line Flange Gaskets.
Lubricants Required:
• Permatex®Nickel Anti-Seize or equivalent (Key A)
WARNING: Keep hands, hair and clothing away from all
moving parts when operating the valve. Serious injury can
result from failure to do so.
1Clean dirt, welding chips, scale, or other foreign material
from the line and flange surfaces.
2Install the valve so the flow through the valve is in the
direction indicated by the arrow on the valve body
(standard flow direction has the seal protector ring (Key 31)
facing upstream). The valve assembly may be installed in
any position unless limited by vibration considerations,
refer to Figures 5 & 6.
WARNING: Excessive wear to the valve may be caused if the
valve is installed with the drive shaft (Key 11) in a vertical
orientation (perpendicular to the ground).
Model 570 Installation
(Refer to Figures 2 and 3, and Tables 4 to 7 for
flange stud (Key 44 I) dimensions)
1Apply Permatex®Nickel Anti-Seize or equivalent
(Key A) to the threads of the two centering flange
studs (Key 44 I). Install the centering studs into the
flanges (refer to Figure 3) before placing the valve
body in-line. The centering studs are used to help
properly center the valve between the pipeline flanges.
2Set the appropriate line gaskets in place between the
valve body and pipeline.
3Set the valve on to the line centering studs from Step
1. Apply Permatex®Nickel Anti-Seize or equivalent
(Key A) to the remaining studs (Key 44 I) and install
them. With the valve properly centered between the
pipeline flanges, tighten the flange stud nuts evenly in
a crisscross pattern to the correct torque
specifications. Proceed to Air Piping (Page 12).
Models 571 & 573 Installation
(Refer to Figures 2 and 3, and Tables 4 to 7 for
flange stud (Key 44 K & L) dimensions)
NOTE: Longer flange studs are needed for the seal
protector ring (Key 31) side of the valve. DO NOT use
standard length studs for the seal protector side of the
valve, refer to Table 5.
1Apply Permatex®Nickel Anti-Seize or equivalent
(Key A) to the threads of the flange studs (Key 44 K &
L) and have them ready to hold the valve in line.
2Set the appropriate line gaskets in place between the
valve body and pipeline.
3Lift and lower the valve in-line, support the valve
during installation. Install the studs (Key 44 K & L).
With the valve properly centered between the pipeline
flanges, tighten the flange stud nuts evenly in a
crisscross pattern to the correct torque specifications.
Proceed to Air Piping (Page 12).

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Left Hand Mount
Right Hand Mount
A
B
C
D
Figure 5 Mounting Orientation Diagram
Figure 6 Actuator/Valve Position Chart
2
3
4
CLOSE
CLOSE
CLOSE
CLOSE
2
3
4
CLOSE
CLOSE
CLOSE
CLOSE
ACTUATOR
(diagrams shown using DFR model actuators) VALVE OPEN
2
3
4
CLOSE
CLOSE
CLOSE
CLOSE
2
3
4
CLOSE
CLOSE
CLOSE
CLOSE
STYLE A
PUSH DOWN TO CLOSE
(PDTC)
STYLE B
PUSH DOWN TO OPEN
(PDTO)
STYLE C
PUSH DOWN TO CLOSE
(PDTC)
STYLE D
PUSH DOWN TO OPEN
(PDTO)
RIGHT-HAND MOUNTED ACTUATOR
LEFT-HAND MOUNTED ACTUATOR
ACTUATOR POSITIONS
ACTUATOR POSITIONS
ACTUATOR POSITIONS
ACTUATOR POSITIONS
FLOW
FLOW
FLOW
FLOW

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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.
Standard actuators are designed to accept a 1/4” (6 mm) NPT
connection. Use 3/8” OD tubing (or equivalent) for all air lines.
Always follow good piping practices when installing piping or
tubing. Install all required line vents, valves, drains, seals, and
filters. For more information refer to the appropriate actuator
instruction manual for your product.
ACTUATOR MOUNTING
Refer to the appropriate Actuator Instruction Manual for
additional mounting instructions. For mounting and fail position
orientations refer to Figures 5 & 6.
NOTE: For applications other than Spring Return Fail Open
Actuators, placing the valve in the fully closed position will help
ensure the correct centering of the ball (Key 6) on the seal
(Keys 26 or 27).
1Set the valve to the desired fail position.
2Clean the connection area of the drive shaft (Key 11) and
insert the drive shaft into the actuator lever or mounting
connection.
3Adjust the position of the valve, lever, and actuator so that
the lever is centered and the actuator shaft is parallel within
the actuator housing. The lever should be able to move
within the housing freely and unobstructed.
Table 14
Mounting Styles and Positions
Mounting Action Position
(Refer to Figures 5 & 6)
Right Hand Mount Fail Open Style A
Right Hand Mount Fail Close Style B
Left Hand Mount Fail Open Style C
Left Hand Mount Fail Close Style D
4Insert the actuator mounting bolts (Key 40). Actuator
mounting bolts are generally inserted through the actuator
mounting bracket side first, unless space is limited.
5Install the lock washers (39), and thread the actuator
mounting nuts (Key 41) on to the mounting bolts. Tighten
the actuator mounting nuts to the appropriate torque
specifications listed in the appropriate actuator instruction
manual.
6Tighten the lever clamp of the actuator to the drive shaft
(Key 11) of the valve if the connection is of that type.
7Once the mounting bolts are tight, the valve may need to be
re-adjusted in order to center the valve ball (Key 6).
Refer to the appropriate actuator instruction manual for
information on adjusting the actuator turnbuckle to re-center
the ball.
Figure 7 Actuator Mounting Detail
41
39 40

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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.
• 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.
• Relieve process pressure and drain the process fluid from up
and down stream of valve.
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.
3 Check for process fluid leakage to the atmosphere through
the packing and (if equipped) any NPT connection.
4Clean and repaint areas as required.
5Ensure all accessories, mounting brackets, and fasteners
are secure.
6Clean any dirt and foreign material from the valve shaft
(Key 11).
MAINTENANCE
NOTE: Packing and ball seals (Key 26) should all be inspected
frequently for leaks, wear and damage. Maintenance to the
packing can be made while the valve is still in-line, although
the actuator must be removed to replace the packing. Ball seal
maintenance must be performed with the valve removed from
the pipe line.
Before You Begin:
• Read Safety Caution (Page 2).
• Determine if valve has PTFE, graphite, or live loaded packing
(Refer to Figures 59 & 60).
• Follow Steps 2 – 6 of PERIODIC INSPECTION before you
begin.
Special Tools Required:
• Mechanics Pick Set
PACKING MAINTENANCE
Determine the type of packing installed in the valve. Refer to
Figures 59, 60, 61, and 62 for packing styles. For live loaded
packing, refer to ASSEMBLY / LIVE LOADED PACKING (Page 36)
for proper adjustment procedures.
If the packing is leaking, tightening of the packing flange may
stop the leak. If extra tightening of the packing does not stop
the leakage, it is possible that the shaft (Key 11) or bore of the
packing box is damaged. Replace or repair parts as necessary.
Refer to DISASSEMBLY / PACKING REMOVAL (Page 15) and
ASSEMBLY / PACKING INSTALLATION (Page 35) for instructions
to remove old packing and install new packing.
NOTE: To remove and replace the valve packing it is necessary
to remove the actuator from the valve (Refer to Page 14 for
ACTUATOR REMOVAL instructions). It is also recommended that
the valve be removed from the pipe line, but not necessary.
Packing box parts can be removed carefully using a mechanics
pick set while the valve is still in-line.
BALL SEAL MAINTENANCE
NOTE: Perform ball seal (Key 26) 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 on the actuator before removing from the pipe line.

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 570, 571, 573 Control Valve
P-570M0919A 14
Operation, Parts, and Instruction Manual
MAINTENANCE (Continued)
BALL SEAL MAINTENANCE (Continued)
Maintenance for ball seals consists mainly of seal replacement.
Should seals require maintenance or inspection, refer to the
VALVE REMOVAL instructions below. Once the valve has been
removed from the pipe line, refer to the DISASSEMBLY / BALL
SEAL REMOVAL instructions (Page 16) and the ASSEMBLY /
BALL SEAL INSTALLATION instructions (Page 40) for information
on removing and replacing the seal.
VALVE REMOVAL
Before You Begin:
• Read Safety Caution (Page 2).
• Use safe work practices and lock out procedures.
• Place the valve into the OPEN position, this helps to prevent
damage to the valve ball (Key 6) during removal. It is
important that the back edge of the ball never be rotated
past the ball seal, damage to the seal will occur.
• 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. Disconnect supply lines
(air or gas), electric power, or control signal to the actuator.
• Vent any pneumatic actuator loading pressure and relieve
any actuator spring preload if present.
• 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.
• Relieve process pressure and drain the process fluid from up
and down stream of valve.
1Support the valve or valve/actuator assembly, refer to
UNPACKING VALVE FROM SHIPPING CONTAINER section
(Page 9) for support details.
2Remove the line bolting (Key 44).
3Remove and replace the line flange gaskets. Gaskets
cannot be re-used.
4Once the valve has been removed from the pipeline, place
the valve assembly on a flat work surface that can support
the assembled weight of the valve and actuator, with the
seal protector ring (Key 31) facing up.
ACTUATOR REMOVAL
Note: Actuator removal does not require that the valve be
removed from the pipeline. In some circumstances it may be
easier to remove the actuator from the valve while the valve is
still in the pipeline.
Before You Begin:
• Read Safety Caution (Page 2).
• Use safe work practices and lock out procedures.
• Sudden movement of actuator can cause damage or injury,
it helps to have the actuator de-energized 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.
• Be aware of potentially hazardous process material that may
be present in-valve.
1Refer to the appropriate actuator instruction manual for
more information regarding actuator removal.
2If the valve has been removed from the pipeline, place
the valve assembly on a flat work surface that can
support the assembled weight of the valve and actuator,
with the seal protector ring (Key 31) facing up.
3Remove the actuator cover plate, mark the
position/orientation of the lever in relation to the valve
shaft for re-assembly purposes.
4The actuator lever is typically clamped onto the valve shaft
(Key 11), loosen the actuator lever (Key G) by loosening
the lever cap screw (Key F).
5Support the actuator (use a lifting device if necessary) and
remove the actuator mounting bolts (Key 40), nuts (Key
41), and lock washers (Key 39).
6Separate 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 6) to be
moved off center. Caution must also be taken as the valve
ball may rotate during separation.

Model 570, 571, 573 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-570M0919A 15
Operation, Parts, and Instruction Manual
DISASSEMBLY
Before You Begin:
• Read Safety Caution (Page 2).
• Use safe work practices and lock out procedures.
• Remove the actuator from the valve. Use caution, even with
the actuator removed the valve ball can still rotate.
• Vent any pneumatic actuator loading pressure and relieve
any actuator spring preload if present.
• Be aware of potentially hazardous process material that may
be present in-valve.
PACKING REMOVAL
Before You Begin:
• Be aware of potentially hazardous process material that may
be present in between the packing.
• Use caution and avoid damaging or scratching the packing
bore or drive shaft (Key 11) while removing the packing.
• Packing may be removed without removing the drive shaft
(Key 11) from the valve, however it is easier to remove the
packing and inspect the valve shaft/packing bore when
the drive shaft has been removed.
Special Tools Required:
• Mechanics Pick Set
1Remove the packing nuts (Key 24).
2For Standard Packing: Remove the packing follower
(Key 20). Refer to Figure 8. NOTE: 16 Inch valves utilize a
2 piece packing follower (Key 20) and packing flange (Key
20A), refer to Figure 75.
For Live Loaded Packing: Remove the packing flange
(Key 23) and remove the spring pack assembly (Keys 20,
21, and 22). If necessary for repair purposes, remove the
o-ring (Key 22) and separate the spring washers (Key 21)
from the packing follower (Key 20). Refer to Figure 9.
3Using a mechanics pick set, carefully remove the packing
box parts: anti-extrusion ring (Key 19), v-ring packing
rings (Key 17), anti-extrusion rope (Key 18), graphite rings
(Key 17A), and packing box ring (Key 16).
Refer to Figures 8 & 9. NOTE: It may be possible to use
a shaped wire with a sharp end to pierce the PTFE v-ring
packing rings (Key 17) and pull them out. Refer to Figure
8.
4Inspect all parts for damage or corrosion, clean, repair, and
replace parts as necessary.
Figure 8 Standard Packing Removal
Figure 9 Sample Live Loaded Packing Removal
24
11
20
17
2
16 1
222111
23 24
2
201
18
17A
18
16
SPRING
PACK
ASSEMBLY

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 570, 571, 573 Control Valve
P-570M0919A 16
Operation, Parts, and Instruction Manual
DISASSEMBLY (Continued)
BALL SEAL REMOVAL
NOTE: During seal removal, the valve actuator may remain
mounted to the valve body.
Before You Begin:
• Read Safety Caution (Page 2).
• Use safe work practices and lock out procedures.
• Be aware of potentially hazardous process material that may
be present in-valve.
• Place the valve in to the OPEN position.
For 1 to 8 Inch 570 Valves (Refer to Figures 10 & 11):
1Remove the seal protector screws (Key 35) and seal
protector clips (Key 33).
2Carefully remove the seal protector ring (Key 31), or seal
protector ring assembly (for metal ball seals - Keys 31, 27,
28, 29), or flow ring (Key 32).
3Remove the gasket (Key 30) and ball seal (Key 26) if
present. NOTE: Gaskets can not be reused.
For 1 to 12 Inch 571/573 Valves (Refer to Figures 10 & 11):
1Remove the seal protector screws (Key 36) and seal
protector washers (Key 34).
2Carefully remove the seal protector ring (Key 31), or seal
protector ring assembly (for metal ball seals - Keys 31, 27,
28, 29), or flow ring (Key 32).
3Remove the gasket (Key 30) and ball seal (Key 26) if
present. NOTE: Gaskets can not be reused.
For 16 Inch Valves (Refer to Figures 10 & 11):
1Remove the seal protector cap screws (Key 37).
2Carefully remove the seal protector ring (Key 31), or seal
protector ring assembly (for metal ball seals - Keys 31, 27,
28, 29), or flow ring (Key 32). NOTE: To aid in safe seal
protector ring removal, use the extractor holes. Extractor
holes can be used to push the seal out of the body by
threading in bolts, or to lift the seal protector ring by
attaching lifting hooks.
3Remove the gasket (Key 30) and ball seal (Key 26) if
present. NOTE: Gaskets can not be reused. Figure 10 Seal Protector Ring Retaining Parts Removal
31
33
35
1
31
36
34
1
37
1
31
EXTRACTOR
HOLE
FOR 16 INCH VALVES
FOR 1 - 12 INCH 571/573 VALVES
FOR 1 - 8 INCH VALVES

Model 570, 571, 573 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-570M0919A 17
Operation, Parts, and Instruction Manual
DISASSEMBLY (Continued)
BALL SEAL REMOVAL (Continued)
For 1 to 2 Inch Valves (Refer to Figure 12):
4Remove the back up ring (Key 25) if present.
For All Sizes:
5Inspect all parts for damage or corrosion, clean, repair, and
replace parts as necessary. Pay close attention to gasket
sealing surfaces.
METAL BALL SEAL DISASSEMBLY
1Carefully separate the metal ball seal (Key 27) from the
seal protector ring (Key 31). The metal ball seal will need
to be removed from the back side of the protector ring,
refer to Figure 13.
2Remove the wave spring (Key 29) and radial seal (Key 28).
NOTE: The radial seal can not be reused.
3Inspect all parts for damage or corrosion, clean, repair, and
replace parts as necessary.
Figure 11 Seal Protector Ring / Flow Ring Removal
Figure 12 Backup Ring Removal
Figure 13 Metal Ball Seal Disassembly
31
30
26
1
6
31
30
26
25
1
27
29
28
31

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 570, 571, 573 Control Valve
P-570M0919A 18
Operation, Parts, and Instruction Manual
DISASSEMBLY (Continued)
BALL AND SHAFT REMOVAL
Before You Begin:
• Read Safety Caution (Page 2).
• Use safe work practices and lock out procedures.
• Be aware of potentially hazardous process material that may
be present in-valve.
• Place 1 to 4 inch valves face up (inlet side up) on your work
surface, valve balls (Key 6) for these small sizes can only
be removed from the inlet side. All other sizes will need to
be placed face down (inlet side down) on the work surface.
It is recommended that these larger sized valves be placed
on blocks to allow for unobstructed ball rotation (refer to
Figure 14). NOTE: Blocks must be able to support the weight
of the valve assembly. WARNING: Use caution and control
the movement of the ball while moving the valve assembly,
ball and shaft may rotate freely and cause damage or injury.
Special Tools Required:
• 3/16” punch.
• Threaded rod (5/16-18) for 1 & 1-1/2” valve follower shaft
removal.
For 1 to 2 Inch Valve Shaft Removal:
NOTE: 1 to 2 inch valves use pins (Keys 8A and 10) to connect
the shafts (Keys 11 & 9) to the ball (Key 6). These shaft
connector pins can only be driven out from one end of the shaft
connection (through the smaller hole out the larger hole). It will
help to locate stake marks on the ear of the ball, pins will be
driven out from the opposite hole to the stake marks. Refer to
Figure 15.
Older designs may use straight pins in a non-stepped hole,
these pins will have been deformed or staked to fit tight. Punch
these pins out accordingly.
1Place the valve assembly inlet side up. NOTE: The valve
ball (Key 6) can only be removed from the inlet side of the
body (Key 1).
2With the ball (Key 6) in the OPEN position with the staked
pin holes facing down, support the ball so that it will not
rotate.
3Mark the shaft (Key 11) to show the orientation of the ball/
shaft connection for re-assembly. It is possible to install
the valve shaft 180 degrees out of alignment during
re-assembly.
SUPPORT
BLOCK
SUPPORT
BLOCK
Figure 14 Valve Placement for 6” to 16” Disassembly
Figure 15 2 Inch Valve Pin Removal
4Using a punch, carefully drive the drive shaft pin (Key 8A)
out of the ball (Key 6) / shaft (Key 11) connection.
5Using a punch, carefully drive the follower shaft pin (Key
10) out of the ball (Key 6) / follower shaft (Key 9)
connection. NOTE: For 2 inch valves, rotate the ball (Key
6) 180 degrees, pins are installed from opposite sides of
each other as shown in Figure 15.
6Remove the drive shaft (Key 11) from the actuator side of
the valve. Refer to Figure 16.
7Remove the pipe plug (Key 38) NOTE: Old style valve
bodies (Key 1) may not have a pipe plug.
INLET
OUTLET
INLET
OUTLET
3
8A
10
3
6
38
1
PUNCH
11
9

Model 570, 571, 573 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-570M0919A 19
Operation, Parts, and Instruction Manual
DISASSEMBLY (Continued)
BALL AND SHAFT REMOVAL (Continued)
For 1 to 2 Inch Valve Shaft Removal (Continued):
8Support the ball (Key 6) and push the follower shaft (Key
9) towards the center of the ball. Refer to Figure 16.
For Old Style 1 & 1-1/2 inch valves: Some old style
valve bodies do not have a pipe plug (Key 38). Use a piece
of 5/16-18 threaded rod inserted into the follower shaft
(Key 9) to pull it in towards the center of the ball (Key 6).
Refer to Figure 17.
9Carefully remove the ball (Key 6) and follower shaft (Key
9) from inside the valve body. Be very cautious not to
damage the sealing surface of the ball.
10 Inspect all parts for damage or corrosion, clean, repair, and
replace parts as necessary.
Figure 16 Follower Shaft and Ball Removal (Steps 6 to 10) for 2 Inch Valves
Figure 17 Follower Shaft Removal 1 & 1-1/2 Inch Valves
11
3
389
36
1
61
9
33
9 6
3
31
3
6
9
1
3

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 570, 571, 573 Control Valve
P-570M0919A 20
Operation, Parts, and Instruction Manual
DISASSEMBLY (Continued)
BALL AND SHAFT REMOVAL (Continued)
For 3 to 12 Inch Valve Shaft Removal:
NOTE: 3 to 12 inch valves use a combination of shaft key (Key
12) and pin (Key 10) to connect the shafts (Key 9 & 11) to the
ball (Key 6). These shaft connectors can only be driven out
from one end of the shaft connection (from the tapered end of
the shaft key and through the non-staked hole out the staked
hole for the follower shaft connection). Refer to Figure 18.
Older designs may use a straight pin in a non-stepped hole to
connect the follower shaft (Key 9) to the ball. These pins will
have been deformed or staked to fit tight. Punch these pins out
accordingly.
1Place the valve assembly in the appropriate position for the
size of valve being disassembled, inlet or outlet side down.
Refer to BEFORE YOU BEGIN on Page 18 and Figure 14.
2With the ball (Key 6) in the OPEN position with the tapered
end of the shaft connection facing up as shown in Figure
18, support the ball so that it will not rotate.
3Mark the shaft (Key 11) to show the orientation of the ball/
shaft connection for re-assembly. It is possible to install
the valve shaft 180 degrees out of alignment during
re-assembly. Figure 18 3 to 12 Inch Shaft Connection Removal
Figure 19 3 to 12 Inch Drive Shaft / Pipe Plug Removal
4Using a punch, carefully drive the shaft key (Key 12) and follower shaft pin (Key 10) partially out of the ball (Key 6). NOTE:
For some valves sizes it will not be possible to completely drive the shaft key and shaft pin out towards the INLET side of the
valve (refer to Figure 18).
5Using the valve shaft (Key 11), rotate the valve ball (Key 6) 180 degrees, as shown in Figure 18, in order to finish removing the
shaft key (Key 12) and follower shaft pin (Key 10).
10
12
1
14
6PUNCH
11
1
3
38
9
6
14