view instruction manual - dyna-flo control valves

Model 570, 571, 573 Control Valve 

Operation, Parts, and Instruction Manual 

TABLE OF CONTENTS 

General 2 Assembly 12 

Scope 2 Bearing Assembly 12 

Specifications 2 Ball / Shaft 13 

Figure 2 - Flange Stud Measuring Method 3 Packing 13 

Table 1 - 570 Flange Stud Lengths 3 Ball Seal 14 

Figure 3 - Valve Assembly / Dimensions 4 Actuator Mounting 14 

Table 2 - 570 Valve Dimensions 5 Figure 4 - Packing Ring Installation 14 

Table 3 - 571 / 573 Valve Dimensions 5 Figure 5 / 6 - Mounting 15 

Table 4 - 571 / 573 Flange Stud Lengths 6 Table 9 - Mounting Styles and Positions 16 

Table 5 - Flange Stud Diameters 6 Figure 7 - Follower Shaft Pin Diagram 16 

Table 6 - Flange Stud Quantity 6 Figure 8 - Ball Seals 17 

Table 7 & 8 - Mounting Pad Dimensions 7 Figure 9 - Ball / Pin Diagrams 18 

Unpacking 8 Figure 10 / Table 10 - Bearing Driver Tool 19 

Installation 8 Figure 11 - Bearing Diagram 20 

Periodic Inspection 9 Figure 12 - 570 Cross Section 21 

Packing Maintenance 9 Figure 13 - 571 / 573 Cross Section 22 

Disassembly 9 Figure 14 - Packing 23 

Valve / Actuator 10 Parts 24 

Packing Removal 10 Drive Shaft Pin Installation 29 

Ball Seal Removal 10 Follower Shaft Pin Installation 30 

Ball / Shaft / Bearings 11 Ball / Shaft Assembly 31 

Bearing Removal 12 Model Builder 32 

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-570M0115A 

1



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. 

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. 

SPECIFICATIONS 

Maximum Pressure / Temperature Ratings 

Consistent with applicable pressure/temperature ratings per 

ASME B16.34-2004. See Table 14 & 15 of Sales Bulletin. 

Maximum Allowable Shutoff Pressure Drop 

See Table 15 of Sales Bulletin. 

750 psig (51.71 Bar) @ 100 o F (38 o C) (Standard Construction) 

Material Temperature Capabilities 

Standard: -50 o F to 450 o F (-46 o C to 232 o C) LCC. 

Optional: High Temp -20 o F to 800 o F (-29 o C to 427 o C) WCC. 

See Table 14 & 15 of Sales Bulletin. 

Construction Materials 

See Parts section 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 upstream side 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. 

See Figure 6. 



P-570M0115A 

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SPECIFICATIONS (Continued) 

Maximum Ball Rotation 

90 degrees. 

Shutoff Classification 

• Composition Ball Seal: Class VI 

• Metal Ball Seal: Class IV 

• Classes and testing per ASME/FCI 70-2 

Valve Dimensions 

See Figure 3 for valve diagram. 

See Tables 1 - 8 for valve dimensions. 

See Tables 1, 4, 5, and 6 for bolting dimensions. 

Actuator Sizing 


VALVE 

570 

(wafer*) 

ASME RATING 

CLASS 

150 

300 

600 

571 (flanged) 150 

573 (flanged) 300 

*NOTE - Wafer available in sizes 2 to 8 inch only. 

Valve and Actuator Assembly Weight 


Options 

Line Flange Bolting - Tables 1, 4, 5, and 6. 

Stainless Steel Construction. 

Internal Coatings. 

Shaft Connections. 

For more information and other options contact your Dyna-Flo 

sales office. 

Figure 2 

Flange Stud Measuring 

Method 

MEASURE FROM FIRST FULL THREAD TO 

FIRST FULL THREAD 

Model 570 Flange Stud Lengths - See Figure 2 & 3 

Table 1 

Valve Size 

(inches) 

I 

Class 150 Class 300 Class 600 

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 (423) 

8 13.50 (343) 15.25 (387) 16.75 (426) 



P-570M0115A 

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G 

E 

Figure 3 

Typical Valve Assembly 

Diagram and Dimensions 

F 

C 

H 

D B A 

I 

MODEL 571 & 573 

Centering Studs 

MODEL 570 

K 

N 

A 

L 

O 

M 

M 

3” to 

12” 

VALVES 

2” VALVE 

N 



P-570M0115A 

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Model 570 Valve Dimensions Inch (mm) 

Table 2 

Valve / 

Actuator 

Size 

Dimensional Reference 

A B C D E F G H 

2” / DFR026 4.88 (124) 4.19 (106) 5.00 (127) 10.4 (264) 15.3 (389) 10.1 (257) 9.90 (251) 0.70 (17.8) 

3” / DFR047 6.50 (165) 4.62 (117) 5.12 (130) 11.4 (290) 17.1 (434) 13.3 (338) 11.4 (290) 1.31 (33.3) 

4” / DFR070 7.62 (194) 5.25 (133) 5.56 (141) 11.9 (302) 18.4 (467) 23.9 (607) 13.1 (333) 2.12 (53.8) 

6” / DFR156 9.00 (229) 6.25 (159) 7.06 (179) 13.4 (340) 21.8 (548) 34.5 (876) 18.6 (472) 2.50 (63.5) 

8” / DFR156 9.56 (243) 7.69 (195) 9.12 (232) 14.9 (378) 24.2 (615) 34.5 (876) 18.6 (472) 2.50 (63.5) 

8” / DFR220 9.56 (243) 7.69 (195) 9.12 (232) 14.9 (378) 25.5 (648) 33.4 (848) 21.1 (536) 2.50 (63.5) 

ASME Class: 150 / 300 / 600 

• Envelope Dimensions are + / - 0.25 in. (6.4 mm) 

• Face to Face Tolerance Per ASME 

Model 571 and 573 Valve Dimensions Inch (mm) 

Table 3 

Valve / 

Actuator 

Size 


A B C D E F G H 

2” / DFR026 4.88 (124) 4.19 (106) 5.00 (127) 10.4 (264) 15.3 (389) 10.1 (257) 9.90 (251) 0.70 (17.8) 

3” / DFR047 6.50 (165) 4.62 (117) 5.12 (130) 11.4 (290) 17.1 (434) 13.3 (338) 11.4 (290) 1.31 (33.3) 

4” / DFR070 7.62 (194) 5.25 (133) 5.56 (141) 11.9 (302) 18.4 (467) 23.9 (607) 13.1 (333) 2.12 (53.8) 

6” / DFR156 9.00 (229) 6.25 (159) 7.06 (179) 13.4 (340) 21.8 (548) 34.5 (876) 18.6 (472) 2.50 (63.5) 

8” / DFR156 9.56 (243) 7.69 (195) 9.12 (232) 14.9 (378) 24.2 (615) 34.5 (876) 18.6 (472) 2.50 (63.5) 

8” / DFR220 9.56 (243) 7.69 (195) 9.12 (232) 14.9 (378) 25.5 (648) 33.4 (848) 21.1 (536) 2.50 (63.5) 

10” / DFR220 11.69 (297) 8.75 (222) 10.25 (260) 16.1 (409) 26.7 (678) 33.4 (848) 21.1 (536) 2.50 (63.5) 

12” / DFR220 13.31 (338) 10.56 (268) 11.94 (303) 17.74 (451) 28.29 (719) 33.4 (848) 21.1 (536) 2.50 (63.5) 

ASME Class: 571 = 150, 573 = 300 

• Envelope Dimensions are + / - 0.25 in. (6.4 mm) 

• Face to Face Tolerance Per ASME 



P-570M0115A 

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Model 571 and 573 Flange Stud Lengths Inch (mm) 

See Figure 2 & 3 

Table 4 

Valve Size 

Inch 

571 573 

K L K L 

2 3.61 (92) 4.11 (104) 3.86 (98) 4.11 (104) 

3 3.86 (98) 4.11 (104) 4.65 (118) 5.15 (131) 

4 3.86 (98) 4.61 (117) 4.90 (124) 5.40 (137) 

6 4.40 (112) 4.90 (124) 5.40 (137) 5.90 (150) 

8 4.90 (124) 5.15 (131) 5.94 (151) 6.44 (164) 

10 5.19 (132) 5.69 (145) 6.75 (171) 7.25 (184) 

12 5.19 (132) 5.94 (151) 7.25 (184) 7.75 (197) 

Flange Stud Diameters and Threads Per Inch (TPI) 

Table 5 

Valve Size 

Inch 

Stud Diameter Inch (mm) 

Class 150 Class 300 Class 600 Class 150 Class 300 Class 600 

2 5/8 (15.7) 5/8 (15.7) 5/8 (15.7) 11 11 11 

3 5/8 (15.7) 3/4 (19.1) 3/4 (19.1) 11 10 10 

4 5/8 (15.7) 3/4 (19.1) 7/8 (22.2) 11 10 9 

6 3/4 (19.1) 3/4 (19.1) 1 (25.4) 10 10 8 

8 3/4 (19.1) 7/8 (22.2) 1-1/8 (28.6) 10 9 7 

10 7/8 (22.2) 1 (25.4) 1-1/4 (31.8) 9 8 7 

12 7/8 (22.2) 1-1/8 (28.6) 1-1/4 (31.8) 9 7 7 

TPI 

Flange Stud Quantity 

Table 6 

Valve Size 

Inch 

Number of Studs Required (Double for Models 571 & 573) 

Class 150 Class 300 Class 600 

2 4 8 8 

3 4 8 8 

4 8 8 8 

6 8 12 12 

8 8 12 12 

10 12 16 16 

12 12 16 20 



P-570M0115A 

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Model 570 Valve Mounting Pad Dimensions Inch (mm) 

Table 7 

Valve 

Inch 


N M O 

2 0.56 (14.2) 4.62 (117) — 

3 0.56 (14.2) 6.00 (152) 1.25 (31.8) 

4 0.56 (14.2) 6.00 (152) 1.25 (31.8) 

6 0.56 (14.2) 6.00 (152) 1.25 (31.8) 

8 0.69 (17.5) 9.25 (235) 1.81 (46.0) 

Model 571 & 573 Valve Mounting Pad Dimensions Inch (mm) 

Table 8 

Valve 

Inch 


N M O 

2 0.56 (14.2) 4.62 (117) — 

3 0.56 (14.2) 6.00 (152) 1.25 (31.8) 

4 0.56 (14.2) 6.00 (152) 1.25 (31.8) 

6 0.56 (14.2) 6.00 (152) 1.25 (31.8) 

8 0.69 (17.5) 9.25 (235) 1.81 (46.0) 

10 0.69 (17.5) 9.25 (235) 1.81 (46.0) 

12 0.69 (17.5) 9.25 (235) 1.81 (46.0) 

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. 



P-570M0115A 

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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 preparing valves and actuators for lifting, be sure to use 

certified lifting equipment and proper rigging. Position any 

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, make repairs if necessary. 

The Model 570 requires the use of long studs that span the 

length of the valve and through both line flanges. The body 

casting is designed to utilize the long studs to assist in 

centering the valve in the line. Models 571 & 573 use shorter 

studs to connect the valve flanges with the line flanges, 

the studs do not center the valve in the pipeline. 

CAUTION 

Only well trained experienced technicians should 

perform these procedures. Be sure to use safe work 

practices and lockout procedures. Always be aware 

of the hazards of spring-loaded actuators. Be sure 

that they are in the failed (de-energized) 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. Use safe work 

practices and lock out procedures when isolating 

valves and actuators. Always be aware of flammable 

instrument gas. 

1 Install the valve with flow through the valve in the direction 

as indicated by the arrow on the valve body (standard flow 

direction has the seal protector ring (Key 10) facing 

upstream). The valve assembly may be installed in any 

position unless limited by vibration considerations, See 

Figure 6. NOTE: excessive wear to the valve may be 

caused if the valve is installed with the drive shaft 

(Key 16) in a vertical orientation. 

WARNING 

Keep hands, hair and clothing away from all moving 

parts when operating the valve. Serious injury can 

result from failure to do so. 

Model 570 Installation 

(Refer to Figures 2 and 3, and Tables 1, 4, 5, and 6 for 

flange stud (Key 32) dimensions) 

1 Coat the threads of two flange studs with anti-seize 

lubricant and install them into the flanges before 

placing the valve body. The two studs should be placed 

appropriately to help center the bottom of the valve 

body, See Figure 3. 

2 Set the appropriate line gaskets in place. 

3 Insert the valve into line centering the bottom of the 

valve body between the two studs installed in Step 1. 

Lubricate the remaining studs with anti-seize 

compound and install them. Make sure the valve 

is properly centered between the pipeline flanges and 

then tighten the flange studs evenly in a criss-cross 

pattern to the correct torque specifications. 

Models 571 & 573 Installation 

(Refer to Figures 2 and 3, and Tables 1, 4, 5, and 6 for 

flange stud (Key 32) dimensions) 

NOTE 

Longer flange studs are needed for the seal 

protector ring (Key 10) side of the valve. DO NOT 

use standard length studs for the seal protector 

side of the valve, see Table 4. 

1 Lubricate the flange studs with anti-seize compound 

and have them ready to hold the valve in line. 

2 Set the appropriate line gaskets in place. 



P-570M0115A 

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INSTALLATION (Continued) 

Models 571 & 573 Installation (Continued) 

3 Insert the valve in line and make sure the valve is 

properly centered between the pipeline flanges. 

Tighten all the flange studs and nuts evenly in a crisscross 

pattern to the correct torque specifications. 

Air Piping 

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. 

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 yoke of the actuator. 

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. 

2 Check for process fluid leakage to the atmosphere through 

the packing and (if equipped) any NPT connection. 

3 Examine the valve for damage caused by corrosive fumes 

or process drippings. 

4 Clean the valve and repaint areas of severe oxidation. 

6 Ensure all accessories, mounting brackets and fasteners 

are secure. 

7 Clean any dirt and foreign material from the stem. 

PACKING MAINTENANCE 

If the packing is leaking, and tightening the packing flange 

does not stop the leak, then it is recommended that you 

remove the valve from the line. Refer to Valve Disassembly / 

Packing Removal for maintenance instructions. For live loaded 

packing, refer to the live loaded packing instructions for proper 

adjustment procedures. 

DISASSEMBLY 

CAUTION 

Only well trained experienced technicians should 

perform these procedures. Be sure to use safe work 

practices and lockout procedures. Always be aware 

of the hazards of spring-loaded actuators. Be sure 

that they are in the failed (de-energized) 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. 

1 Isolate the valve from the process by completely 

shutting off the process pressure or use bypass valves if 

necessary. Drain the process fluid from upstream and 

downstream of the valve. 

B 

C 

D 

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. 

Vent the pneumatic actuator loading pressure and 

relieve any actuator spring preload. 

Use Safety lock-out procedures to be sure that the 

above provisions stay in effect while you complete 

the work on your equipment. 

2 Disconnect any power supply media lines providing air / 

gas pressure, electric power, or a control signal to the 

actuator. Isolate and bleed off any instrument gas from 

the actuator and instruments. Ensure the actuator cannot 

suddenly operate the valve. 

CAUTION 

Use safe work practices and lock out procedures 

when isolating valves and actuators! Always be 

aware of flammable instrument gas! 



P-570M0115A 

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DISASSEMBLY (Continued) 

3 Secure the valve and actuator assembly and remove them 

from the pipeline by removing the flange studs (Key 32). 

Valve / Actuator Disassembly 

1 Replacing the ball seal can be accomplished without 

removing the actuator. Place the valve assembly on a 

flat work surface that can support the assembly 

weight, the valve seal protector ring (Key 10) should 

be facing up. Relieve any actuator spring preload and 

refer to the appropriate actuator instruction manual 

for actuator disassembly instructions. 

2 Take note of the ball position relative to the 

actuator lever where the spline of the shaft goes 

through. This will assure proper ball position during 

reassembly. A digital camera works well for this. You 

can remove the travel indicator arrow, (DFR 026 and 

DFR 047) or the cover plate, (DFR 070, DFR 156 and 

DFR 220) from the actuator and mark the shaft and 

lever with a punch or take a digital picture showing 

the ball position and the lever position. For Dyna-Flo 

Model DFR 026 actuators there is no clamp on the 

lever. For the DFR 047, DFR 070, DFR 156 and the DFR 

220 you will have to remove the cover and loosen the 

clamp on the lever. 

3 Remove the actuator mounting bolt (Key 30) and slide 

the valve body assembly from the actuator. This may 

require the use of a pry bar between the body and the 

actuator mounting pad. The lever on the DFR 070, DFR 

156 and DFR 220 will sometimes bind when trying to 

remove the valve body assembly. A wedge driven into 

the slot in the lever will help to loosen the clamp on 

the lever. CAUTION: Using a hammer to drive the 

actuator off of the valve shaft can seriously damage 

the valve. 

1 Remove the packing nuts (Key 27), note any corrosion 

or roughness in the threads. Remove the packing 

follower (Key 23) by sliding it over the drive shaft 

(Key 16). NOTE: packing followers can be 1 piece or 

two piece design depending on construction material. 

NOTE 

Valve shaft packing (Key 22) may be removed 

without removing the drive shaft (Key 16) from 

the valve however it is easier to remove the 

packing and inspect the valve shaft and packing 

bore when the drive shaft is removed. Refer to 

Ball / Shaft Removal for drive shaft disassembly 

instructions. 

2 Using a mechanics pick set or wire hook, remove the 

packing (Keys 21 & 22) from the packing bore. Be 

extremely cautious not to damage the drive shaft 

or the packing bore while removing packing as this will 

cause new packing to leak. 

3 Inspect all packing parts, drive shaft, and packing bore 

for damage, polish or replace as necessary. Refer to 

Assembly / Packing for packing assembly instructions. 

Ball Seal Removal 

NOTE 

During seal removal, the valve actuator may 

remain mounted to the valve body. 

1 Rotate the valve ball (Key 3) to the open position. 

For PTFE Composition Ball Seals 

A Remove the seal protector ring screws (Key 12) 

and seal protector clips (Key 11). Carefully 

remove the seal protector ring (Key 10) and 

gasket (Key 9). 

WARNING 

To Avoid personal injury and property damage 

use caution when separating the actuator from 

the valve body, during removal the valve ball 

may rotate in the body. 

Packing Removal 

For live loaded packing, refer to the Live Loaded Packing 

instruction manual (P-LLPR) for assembly instructions. 

B 

C 

Remove the seal (Key 5) from the valve body. 

For 2 inch valves remove the back-up ring 

(Key 4) as well. 

Clean and inspect all seating, sealing, and gasket 

surfaces for damage. If there is excessive wear 

or damage to the seal ring, check the valve ball 

(Key 3) for damage in corresponding areas. It is 

also a good opportunity to inspect the flange 

gasket surfaces for damage while the valve is 

out of line. 



P-570M0115A 

10




Ball Seal Removal (Continued) 

For Metal Ball Seals 

A Remove the seal protector ring screws (Key 12) 

and seal protector clips (Key 11). Carefully 

remove the seal protector ring (Key 10) and 

gasket (Key 9). NOTE: Caution when 

removing the seal protector ring the metal ball 

seal can fall out and damage itself or the ball. 

B 

C 

D 

Carefully remove the metal ball seal (Key 6) by 

pushing it away from the flange gasket side of the 

seal protector ring. 

Remove the wave spring (Key 8) and the radial 

seal (Key 7) from the seal protector ring. 

Clean and inspect all seating, sealing, and gasket 

surfaces for damage. It is also a good 

opportunity to inspect the flange gasket surfaces 

for damage while the valve is out of line. 

Ball / Shaft and Bearing Removal 

CAUTION 

If the bearings (Key 20) require removal special 

tooling may be required. In most cases the bearings 

can be removed with a standard punch, a standard 

punch may also damage the bearings. If the bearings 

are to be reused, see Table 7 for drawings and 

information on bearing removal tools that will not 

damage the bearings. 

NOTE 

Before the bearings can be removed from the valve 

both the drive shaft (Key 16) and follower shaft 

(Key 13) must be removed from the valve body 

(Key 1). The ball seals must be removed prior to 

removing the valve ball and valve shafts. 

The follower shaft to ball connection uses a follower shaft pin 

(key 14) in a stepped hole and can only be installed and 

removed in one direction. (See Figure 9) 

For 3 through 12 inch valves the valve shaft / valve ball 

connection is made using a shaft key (Key 18), see Figure 8. 

The shaft / ball connection is factory set, but if the shaft or key 

needs to be replaced or if the connection is loose it will need to 

be reset. Refer to the Assembly instructions. 

Always use caution and protect the flange gasket surfaces from 

damage during disassembly. 

For 2 Inch Valves 

1 Mark the shaft to show the orientation of the ball 

before beginning disassembly, this will help to 

re-install the shaft properly on reassembly. It is 

possible to install the valve shaft 180 degrees out of 

alignment which will make it difficult to mount the 

actuator. 

2 Rotate the ball to the ‘open’ position and locate the 

smaller of the pin holes on the ball (see Figure 8). 

To keep the ball and shaft in proper position it may 

be necessary to support the ball using a wood or soft 

block during disassembly. Using a 3/16” pin punch, 

drive the shaft pin (Key 15) out of the ball / drive shaft 

(Key 16) connection by driving the shaft pin out the 

larger side of the pin hole. 

3 Using the same 3/16” pin punch, remove the follower 

shaft pin (Key 14) from the valve ball / follower shaft 

(Key 13) connection. 

4 Remove the pipe plug (Key 28) and drive the follower 

shaft into the ball towards the drive shaft. If the drive 

shaft cannot be pulled out by hand, continue to drive 

the follower shaft into the drive shaft until it loosens. 

Being careful not to allow the ball to drop, pull the 

drive shaft from the valve body through the actuator 

mounting end of the valve. 

5 Remove and inspect the valve ball for damage. Inspect 

the valve shafts and valve body for damage as well. 

For 3 through 12 Inch Valves 

1 Mark the shaft to show the orientation of the ball 

before beginning disassembly, this will help to 

re-install the shaft properly on reassembly. It is 

possible to install the valve shaft 180 degrees out of 

alignment which will make it difficult to mount the 

actuator. 

2 Rotate the ball to the ‘open’ position and locate the 

smaller end of the keyhole on the valve ball / drive 

shaft (Key 16) connection. To keep the ball and shaft 

in proper position it may be necessary to support the 

ball using a wood or soft block during disassembly. 



P-570M0115A 

11




Ball / Shaft and Bearing Removal (Continued) 

For 3 through 12 Inch Valves (Continued) 

3 Using an appropriately sized pin punch, drive the key 

(Key 18) out of the ball / drive shaft connection by 

driving through the smaller of the keyholes pushing 

the key away. See Figure 8. 

4 Using the a 3/16” pin punch, remove the follower shaft 

pin (Key 14) from the valve ball / follower shaft (Key 

13) connection. Be sure to check the ball / follower 

shaft connection for a stepped hole, always drive the 

follower shaft pin from the smaller hole out the larger. 

5 Remove the pipe plug (Key 28) and drive the follower 

shaft inward towards the drive shaft. If the drive 

shaft cannot be pulled out by hand, continue to drive 

the follower shaft into the drive shaft until it loosens. 

Be very careful not to allow the ball to drop 

especially with larger valves! Pull the drive shaft 

from the valve body through the actuator mounting 

end of the valve. 

6 Remove and inspect the valve ball for damage. Inspect 

the valve shafts and valve body for damage as well. 

Bearing Removal 

NOTE 

If the bearings (Key 20) need to be replaced, please 

note that Dyna-Flo bearing configurations have 

changed for 570 series control valves and new 

replacement bearing kits will reflect this change. 

2 Remove the bearings by hand. If the bearings are 

unable to be removed by hand refer to Table 7 for 

bearing removal tool dimensions and instructions. 

CAUTION: If the bearings require removal special 

tooling may be required. In most cases the bearings 

can be removed with a standard punch, a standard 

punch may also damage the bearings. 

3 Remove and replace the thrust washer (Key 19) if 

required. 

4 Inspect internal surfaces for evidence of wear and 

repair if required. 

ASSEMBLY 

Ensure that all parts have been thoroughly cleaned and 

inspected as per disassembly section prior to assembly. 

Replace damaged parts and always replace packing and 

gaskets. 

Bearing Assembly 

NOTE 

If the bearings (Key 20) need to be replaced, please 

note that Dyna-Flo bearing configurations have 

changed for 570 series control valves and new 

replacement bearing kits will reflect this change. 

Valve sizes 6, 8, 10, and 12 inch use specific inboard 

and outboard bearings. Pay close attention when 

ordering parts and assembling these sizes. All other 

sizes use identical inboard /outboard bearings. 

Inboard and outboard bearings are only present for valve sizes 

6” through 12” with S17400 bearing material. All other bearing 

combinations and sizes utilize two identical bearings. 

Thrust washers (Key 19) are only required for valves sizes 6” 

through 12” with S17400 bearing material. All other bearing 

combinations and sizes no longer require a thrust washer. 

1 Inspect the bearings, remove the bearings only if they 

are damaged and require removal. 

Thrust washers (Key 19) are only required for valves sizes 6” 

through 12” with S17400 bearing material. All other bearing 

combinations and sizes no longer require a thrust washer. 

1 See Figure 11 to determine placement of inboard and 

outboard bearings if they are used. Install the bearings 

appropriately by hand or by using the appropriate bearing 

tool as indicated in Table 7. The flange of the bearing 

should be in contact with the valve body. 



P-570M0115A 

12



ASSEMBLY (Continued) 

Ball / Shaft Assembly 

CAUTION 

To avoid dropping and damaging the valve ball 

(Key 3) when inserting the ball into the valve body 

(Key 1) it may be necessary to support the ball 

using a wood or soft block during assembly. 

NOTE 

For 3 through 12 inch valves the valve shaft / valve 

ball connection is made using a flat key (Key 18) 

and set screws (Key 17), see Figure 8. The shaft 

/ ball connection is factory set, but if the shaft or key 

needs to be replaced or if the connection is loose it 

will need to be reset prior to assembly. See Page 28. 

1 For valve sizes 3 through 12, set the drive shaft to ball 

connection prior to assembly. Refer to Page 28 for 

instructions to set the shaft / ball connection. 

2 Carefully insert the valve ball into the valve body. 

Insert the follower shaft (Key 13) through the valve 

body and into the valve ball. 

3 Align the pin hole of the follower shaft with the follower 

shaft pin hole on the valve ball. Insert the groove pin 

(Key 14) into the ball / follower shaft assembly. 

4 Install the drive shaft (Key 16) through the bearing 

and into the valve ball. Set the valve shaft to the 

original orientation as per Step 1 of Ball / Shaft and 

Bearing Removal. Install the shaft key (Key 18) or 

shaft pin (Key 15) for 2” valves, and refer to Pages 

28, 29, and 30 for shaft pin and shaft key installation 

instructions. 

5 With the follower shaft pins and flat key installed 

beneath the hole on the surface of the ball ear, stake 

the pins and/or flat key on both the drive shaft and 

follower shaft using a center punch. See Pages 28 - 30 

for further instructions. 

Packing Installation 

1 Ensure all parts have been cleaned and inspected prior 

to replacing the packing. Refer to the Disassembly 

section for inspection procedures. For Live Loaded 

packing refer to the Live Loaded Packing instruction 

manual for rotary valves (P-LLPR). 

NOTE 

To prevent trapping air when installing packing 

rings it is recommended that packing rings be 

installed one at a time. Do not force packing 

rings below the chamfer of the packing bore 

before adding another ring. See Figure 4. 

2 Install the packing parts as shown in Figure 14. For 

PTFE packing, lubricate the packing with a siliconebased 

lubricant. 

3 Install the packing follower (Key 23). NOTE: Packing 

followers constructed using special material may be a 

2 piece design. 

4 Thread the packing nuts (Key 27) onto the packing 

studs (Key 26) and tighten them in an alternating 

pattern until the packing follower is secured. The 

packing nuts should be tightened enough to stop 

leakage under operating conditions. 

Ball Seal Assembly 

1 Have all parts and seal surfaces cleaned and inspected 

prior to assembly. Refer to Disassembly section for 

inspection procedures. 

2 Rotate the ball (Key 3) to the closed position. Inspect 

the position of the ball along the axis of the shaft 

(Key 16). TThe ball should be no more than 0.005 

inches (0.13 mm) off the center line. It may be 

necessary to use a feeler gauge between the 

clearance angles just below where the ball seal sits, 

using a feeler gage the maximum difference would be 

0.010 inches (0.254 mm). For 2 inch valves the 

back-up ring (Key 4) will need to be installed to check 

the position of the ball. If the ball is not centered it 

may be due to some wear on the ears of the ball or 

the thrust face of the bearings, re-inspect all surfaces 

for damage. 

For PTFE Composition Ball Seals 

A 

B 

Install the ball seal (Key 5), gasket (Key 9) and 

seal protector ring (Key 10). 

Install the seal protector clips (Key 11) and seal 

protector ring screws (Key 12), tighten them 

completely in an alternating pattern. 



P-570M0115A 

13



ASSEMBLY (Continued) 

Ball Seal Assembly (Continued) 

5 Re-install the actuator cover plate and travel indicator 

arrow. 

For Metal Ball Seals 

A 

B 

C 

D 

Lubricate the radial seal (Key 7) with white 

petroleum grease and install it into the groove in 

the seal protector ring (Key 10). 

Install the wave spring (Key 8) into the seal 

protector ring. 

Insert the metal seal (Key 6) into the seal 

protector ring, take extra care not to damage the 

radial seal when inserting the metal seal. Try to 

keep the metal seal ring from binding as you insert 

it by keeping it even and parallel. 

Install the gasket (Key 9), then install the metal 

seal / protector ring assembly over the gasket. 

Figure 4 Packing Ring Installation 

E 

Install the seal protector clips (Key 11) and seal 

protector ring screws (Key 12), tighten them 

completely in an alternating pattern. 

16 

ACTUATOR MOUNTING 

Refer to the appropriate actuator instruction manual for 

additional mounting instructions. For mounting and fail position 

orientations see Figures 5 & 6. 

1 Set the valve to the desired fail position. 

23 

top of packing ring 

pushed down to be 

even with bottom of 

packing bore chamfer 

2 Clean the splines of the drive shaft and using the marks 

made in Step 2 of Valve / Actuator Disassembly insert 

the drive shaft (Key 16) into the actuator lever. 

1 

installing first 

packing ring 

3 Adjust the position of the valve, lever, and actuator so 

that the lever is centered and the actuator shaft is 

vertically parallel within the actuator housing. The lever 

should be able to move within the housing freely and 

unobstructed. Tighten the lever clamp to the drive shaft. 

4 Insert the actuator mounting bolt (Key 30) and bolt 

the valve and actuator together using the actuator 

mounting nuts (Key 31). Once the mounting bolts are 

tight, the valve may need to be readjusted in order 

to center the valve ball. Refer to the appropriate 

actuator instruction manual for information on 

adjusting the actuator turnbuckle to re-center 

the ball. 

top of packing ring 

pushed down to be 

even with bottom of 

packing bore chamfer 

installing second 

packing ring 



P-570M0115A 

14



C 

D 

Left Hand Mount 

Figure 5 Mounting Orientation Diagram 

A 

B 

Right Hand Mount 

Figure 6 Actuator/Valve Position Chart 

ACTUATOR 

(diagrams shown using DFR model actuators) 

VALVE OPEN 

RIGHT-HAND MOUNTED ACTUATOR 

STYLE A 

PUSH DOWN TO CLOSE 

(PDTC) 

STYLE B 

PUSH DOWN TO OPEN 

(PDTO) 

ACTUATOR POSITIONS 


CLOSE 

4 

CLOSE 

CLOSE 

CLOSE 

4 

3 

3 

CLOSE 

2 

CLOSE 

2 

CLOSE CLOSE 

FLOW 

FLOW 

LEFT-HAND MOUNTED ACTUATOR 

STYLE C 

PUSH DOWN TO CLOSE 

(PDTC) 

STYLE D 

PUSH DOWN TO OPEN 

(PDTO) 



CLOSE 

CLOSE 

CLOSE 

CLOSE 

4 

4 

3 

3 

2 

CLOSE 

CLOSE 

2 

CLOSE CLOSE 

FLOW 

FLOW 



P-570M0115A 

15



Mounting Styles and Positions 

Table 9 

Mounting 

Action 

Position 

(See Figure 5) 

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 

Figure 7 Proper Follower Shaft Pin Removal Diagram 

BALL ( Key 3 ) 

FOLLOWER SHAFT 

PIN ( Key 14 ) 

SHAFT ( Key 13 ) 

Drive the follower shaft 

pin out of the ball/shaft 

from the direction of the 

smaller shaft pin hole. 

Follower Shaft Pin Removal Diagram 



P-570M0115A 

16



Figure 8 Ball Seal Assembly Diagrams for Valve Sizes 2 Through 12 Inch 

SEAL PROTECTOR 

RING (Key 10) 

VALVE BODY 

(Key 1) 


RING (Key 10) 

VALVE BODY 

(Key 1) 

GASKET 

(Key 9) 

GASKET 

(Key 9) 

BALL SEAL 

(Key 5) 

BACKUP RING 

(Key 4) 

BALL 

(Key 3) 

RADIAL SEAL 

(Key 7) 

METAL BALL 

SEAL (Key 6) 

APPLY 

LUBRICANT* 

WAVE SPRING 

(Key 8) 

BALL 

(Key 3) 

2 INCH TCM BALL SEAL 

& BACKUP RING 

2 INCH METAL BALL SEAL 


RING (Key 10) 

VALVE BODY 

(Key 1) 


RING (Key 10) 

VALVE BODY 

(Key 1) 

GASKET 

(Key 9) 

GASKET 

WAVE SPRING 

(Key 9) (Key 8) 

SEAL 

(Key 5) 

BALL 

(Key 3) 

METAL BALL 

SEAL (Key 6) 

RADIAL SEAL 

(Key 7) 

BALL 

(Key 3) 

APPLY LUBRICANT* 

SIZE 3 - 12 INCH 

TCM BALL SEAL 


METAL BALL SEAL 


RING (Key 10) 

VALVE BODY 

(Key 1) 

GASKET 

(Key 9) 

RADIAL SEAL(Key 7) 

METAL BALL 

SEAL (Key 6) 

WAVE SPRING 

(Key 8) 

BALL 

(Key 3) 


METAL BALL SEAL 

* Lubricate with white petroleum grease. 



P-570M0115A 

17



Figure 9 Ball / Pin Assembly Diagrams for Valve Sizes 2 Through 12 Inch 

BALL ( Key 3) 

BALL ( Key 2) 

SHAFT PIN 

SHAFT KEY 

( Key 18 ) 

SHAFT ( Key 2) 

( Key 15 ) SHAFT 

( Key 16) 

SET SCREW 

( Key 17 ) 

2 INCH BALL/PIN ASSEMBLY 3 THRU 4 INCH BALL/PIN ASSEMBLY 


SHAFT KEY ( Key 18) 

SHAFT KEY ( Key 18) 


SET SCREW ( Key 17 ) 


6 THRU 12 INCH BALL/PIN ASSEMBLY 

3 THRU 12 INCH BALL/PIN 

ASSEMBLY (SIDE VIEW) 



P-570M0115A 

18



C 

D 

Chamfer 0.015” all Corners 

BØ 

AØ 

Figure 10 Bearing Driver Diagram 

0.015” Radius Max (or Under Cut) 

* Note: for removal this driver will only work if the outboard bearing has a large enough pipe plug to allow access. 

Bearing Driver Construction Dimensions 

Table 10 

Valve Size 

(Inch) 

AØ 

Inch (mm) 

BØ 

Inch (mm) 

C 

Inch (mm) 

D 

Inch (mm) 

2 0.620 (15.7) 0.740 (18.8) 0.750 (19.1) 1.500 (38.1) 

3 0.740 (18.8) 0.900 (22.9) 0.750 (19.1) 1.500 (38.1) 

4 0.740 (18.8) 0.900 (22.9) 0.750 (19.1) 1.500 (38.1) 

6 0.990 (25.0) unavailable 1.000 (25.4) 2.000 (50.8) 

8 1.240 (31.5) 1.485 (37.7) 1.000 (25.4) 2.000 (50.8) 



P-570M0115A 

19



Figure 11 Old Style Inboard and Outboard Bearing Diagram 

INBOARD BEARING 

INBOARD BEARING ( Key 20 ) 

THRUST WASHER ( Key 19) 

SMALLER BEARING RIDGE 

THRUST WASHER 


SETSCREW ( Key 17 ) 

SHAFT KEY ( Key 18 ) 

OUTBOARD BEARING 


LARGER BEARING RIDGE 

FOLLOWER SHAFT ( Key 13 ) 

FOLLOWER SHAFT PIN ( Key 14) 

OUTBOARD BEARING ( Key 20) 

VALVE BODY ( Key 1 ) 

NOTE: DIFFERENTIATION BETWEEN THE INBOARD AND OUTBOARD BEARINGS 

CAN BE PERFORMED THROUGH VISUAL INSPECTION. THE INBOARD BEARING HAS 

A SMALLER RIDGE (SHOWN ABOVE) THAT ALLOWS FOR THE PRESSENCE OF THE 

THRUST WASHER (KEY 18) BETWEEN THE INBOARD BEARING (KEY 19) AND THE BALL (KEY 3). 



P-570M0115A 

20



Figure 12 570 Cross Section 

24 

25 

26 

27 

23 

2 

30 

NOTE: Optional two piece 

packing flange (Key 24) and follower (Key 25) 

for special alloy assembly. 

16 

18 

31 

o 

View rotated 90 for clarity 

22 

9 

2 

5 

4 

10 

12 

A 

21 

20 

15 

14 

20 

1 

13 

Detail A - Typical 3 & 4 Inch 

Valve Construction 

16 

19 

18 

11 

2 INCH 570 VALVE DIAGRAM 

28 





P-570M0115A 

21



Figure 13 571 & 573 Cross Section 

24 

25 

27 

26 

28 

2 

NOTE: Optional two piece 

packing flange (Key 24) and follower (Key 25) 

for special alloy assembly. 

30 

31 

16 

22 

18 

o 

View rotated 90 for clarity 

9 

8 

2 

6 

7 

10 

12A 

A 

21 

20 

15 

14 

20 

1 

13 



16 

19 

18 

11A 

28 

2 INCH 571 & 573 VALVE DIAGRAM 

Detail A - Typical 6 - 12 Inch 




P-570M0115A 

22



SHAFT (KEY 16) SHAFT (KEY 16) 

PACKING NUT (KEY 27) 

PACKING 

FOLLOWER 

(KEY 23) 


PACKING 

FOLLOWER 

(KEY 23) 

PACKING STUD (KEY 26) BODY (KEY 1) 

PACKING STUD (KEY 26) 

BODY (KEY 1) 

PACKING SET 

(KEY 22) 

PTFE PACKING 

PACKING BOX 

RING (KEY 21) 

GRAPHITE 

PACKING SET 

(KEY 22) 

PACKING BOX 

RING (KEY 21) 

GRAPHITE PACKING 

O-RING (KEY 38) 


SHAFT (KEY 16) 

PACKING FLANGE 

(KEY 24) 

PACKING STUD (KEY 37) 

LIVE LOADED 

PACKING FOLLOWER 

(KEY 35) 

SPRING 

WASHERS (KEY 36) 

BODY (KEY 1 ) 

PACKING SET 

(KEY 22) 

ANTI-EXTRUSION 

PACKING BOX 

RINGS (KEY 39) 

RING (KEY 21) 

LIVE LOADED PTFE PACKING 

Figure 14 Packing Configuration Diagrams 

Parts Ordering 

Whenever corresponding with Dyna-Flo about a 570 Series Control Valves, refer to the nameplate 

(Key 33) for the serial number of the unit. Please order by the complete part number (as given in 

the following part lists) of each part required. 



P-570M0115A 

23



Parts 

Key Description Part Number 

1 Body 

if you need a body as a replacement part, order by 

valve size and stem diameter, serial number and 

desired material. 

2 2” Ball/Shaft Assembly 

CG8M/S17400 Shaft 

CG8M/CRPL Nitronic 50 Shaft 

3 Ball, CG8M chrome plated 

33B7014X12D 

33B7014XNTD 

3 Inch 31B0727X01D 

4 Inch 31B0667X01D 

6 Inch 41B0731X01D 

8 Inch 41B0737X01D 

10 Inch 570X109X15D 

12 Inch 570X129X15D 

4 Backup Ring (2” valve only) 

S31600/S31603 Dual Grade 

5 Ball Seal, PTFE Seal 

13B6677X01D 

2 Inch 13B6686X01D 

3 Inch 13A2565X01D 

4 Inch 13A2585X01D 

6 Inch 13A2619X01D 

8 Inch 13A2645X01D 

10 Inch 13A2662X01D 

12 Inch 13A2677X01D 

6 Metal Ball Seal 

Alloy 6 

2 Inch 33B6676X03D 

3 Inch 34B4766X03D 

4 Inch 34B4767X03D 

6 Inch 34B4768X03D 

8 Inch 34B4769X03D 

10 Inch 34B3365X03D 

12 Inch 34B3366X03D 

S21800 

2 Inch 33B6676X01D 

3 Inch 34B4766X01D 

4 Inch 34B4767X01D 

6 Inch 34B4768X01D 

8 Inch 34B4769X01D 

10 Inch 34B3365X01D 

12 Inch 34B3366X01D 


7 Radial Seal, PTFE / Elgiloy 

2 Inch 18B0263X01D 

3 Inch 18B0264X01D 

4 Inch 28B0265X01D 

6 Inch 28B0266X01D 

8 Inch 28B0267X01D 

10 Inch 28B0268X01D 

12 Inch 28B0269X01D 

8 Wave Spring, N07750 

2 Inch 23B6689X01D 

3 Inch 24B4760X01D 

4 Inch 24B4761X01D 

6 Inch 24B4762X01D 

8 Inch 24B4763X01D 

10 Inch 22B4509X01D 

12 Inch 22B4514X01D 

9 Gasket (Seal Protector Ring) 

Graphite Laminate 

2 Inch 13B6687X01D 

3 Inch 11B0660X01D 

4 Inch 11B0672X01D 

6 Inch 11B0681X01D 

8 Inch 11B0693X01D 

10 Inch 11B0720X01D 

12 Inch 11B4682X02D 

10 Seal Protector Ring 

TCM Composition PTFE Seal 

LCC 

2 Inch 33B0992X01D 

3 Inch 21B0658X01D 

4 Inch 21B0665X01D 

6 Inch 21B0678X01D 

8 Inch 31B0686X01D 

10 Inch 31B0713X01D 

12 Inch 31B4675X01D 

CG8M 

2 Inch 33B0992X02D 

3 Inch 21B0658X02D 

4 Inch 21B0665X02D 

6 Inch 21B0678X02D 

8 Inch 31B0686X02D 

10 Inch 31B0713X02D 

12 Inch 31B4675X02D 



P-570M0115A 

24



Parts (Continued) 


10 Seal Protector Ring 

HD Metal Seal 

LCC 

2 Inch 33B0993X01D 

3 Inch 32B3776X01D 

4 Inch 32B3780X01D 

6 Inch 32B3784X01D 

8 Inch 32B4378X01D 

10 Inch 32B4507X01D 

12 Inch 32B4512X01D 

CG8M 

2 Inch 33B0993X02D 

3 Inch 32B3776X02D 

4 Inch 32B3780X02D 

6 Inch 32B3784X02D 

8 Inch 32B4378X02D 

10 Inch 32B4507X02D 

12 Inch 32B4512X02D 

WCC 

2 Inch 33B0993X04D 

3 Inch 32B3776X04D 

4 Inch 32B3780X04D 

6 Inch 32B3784X04D 

8 Inch 32B4378X04D 

10 Inch 32B4507X04D 

12 Inch 32B4512X04D 

11 Seal Protector Clip, SST 

11A 

2 Required 

2 - 4 Inch 24B3040X01D 

6 - 8 Inch 22B4975X01D 

Seal Protector Washer, S31600 

2 - 3 Inch (2 Required) 1A8518X001D 

4 Inch (2 Required) 11B4671X01D 

6 - 12 Inch (2 for 6 - 8 Inch, 

4 for 10 - 12 Inch) 

12 Seal Protector Retaining Screw, 

18-8, 2 Required 

1A3756X001D 

2 Inch 1A8991X003D 

3 & 4 Inch SBR18.8516.100 

6 Inch 11B0682X02D 

8 Inch 

12A 

Seal Protector Washer Screw, SST 

2 & 3 Inch SBR18.814.012 

4 Inch 1R1938X001D 

6 - 12 Inch (2 for 6 - 8 Inch, 

4 for 10 - 12 Inch) 

13 Follower Shaft 

S20910 

11B0682X02D 

2 Inch 13B6678X01D 

3 & 4 Inch 11B0728X01D 

S20910 

6 Inch 11B0733X01D 

8 & 10 Inch 11B0717X01D 

12 Inch 11B4679X01D 

S17400 

2 Inch 13B6678X03D 

3 & 4 Inch 11B0728X03D 

6 Inch 11B0733X03D 

8 Inch 11B0717X03D 

14 Follower Shaft Pin 

S30400 

2 Inch 1V32603507D 

3 & 4 Inch 1V32603507D 

6 Inch 18A6138X01D 

8 & 10 Inch 11B0738X01D 

12 Inch 11B8596X01D 

15 2 Inch Shaft Pin, S31600/S31603 570X200001D 

16 Drive Shaft, S20910 

3 & 4 Inch DFVX000NT2D 

6 Inch 570X601X01D 

8 & 10 Inch 570X801X01D 

12 Inch 570X121X01D 

S17400 

3 & 4 Inch DFVX000002D 

6 Inch 570X601X03D 

8 & 10 Inch 570X801X03D 

12 Inch 570X121X03D 

17 Socket Set Screw, 

S20910 

6-12 Inch require 2 

3 - 6 Inch 3DFVSETSCREW 

8 - 12 Inch 570X803X01D 

18 Shaft Key, S20910 

3 & 4 Inch DFVX000001D 

6 Inch 560X000004D 

8 Inch 570X802X01D 



P-570M0115A 

25





18 Shaft Key (Continued) 

10 Inch 570X802X01D 

12 Inch 570X123X01D 

19 Thrust Washer, Carbon PTFE 

6 Inch 570X608X01D 

8 Inch 570X808X01D 

10 Inch 570X108X01D 

12 Inch 570X128X01D 

20 Bearing 

S17400 DH1150 / CPTFE 

2 Inch 570X204X01D 

3 & 4 Inch 570X304X01D 

Inboard 

6 Inch 570X604X01D 

8 Inch 570X804X01D 

10 Inch 570X104X01D 

12 Inch 570X124X01D 

Outboard 

6 Inch 570X607X01D 

8 Inch 570X807X01D 

10 Inch 570X107X01D 

12 Inch 570X127X01D 

Alloy 6 

2 Inch 570X204X03D 

3 Inch 570X304X03D 

4 Inch 570X304X03D 

6 Inch 570X604X03D 

8 Inch 570X804x03D 

10 Inch 570X104X03D 

12 Inch 570X124X03D 

S44004 

2 Inch 570X204X04D 

3 Inch 570X304X04D 

4 Inch 570X304X04D 

6 Inch 570X604X04D 

8 Inch 570X804X04D 

10 Inch 570X104X04D 

12 Inch 570X124X04D 

21 Packing Box Ring, 

S31600/S31603 Dual Grade 

2 Inch 16A6083X01D 


3 & 4 Inch 16A6084X01D 

6 Inch 16A6085X01D 

8 & 10 Inch 16A6086X01D 

12 Inch 16A6087X01D 

22 Packing Set (See Page 28 for Live Loaded Kits) 

PTFE 

2 Inch 1R5795X001D 

3 & 4 Inch 12A8995X02D 

6 Inch 12A8832X02D 

PTFE 

8 & 10 Inch 12A8951X01D 

12 Inch 12A8935X02D 

Graphite (4 Required) 

2 Inch 12A9135X01D 

3 & 4 Inch 12A9136X01D 

6 Inch 12A9137X01D 

8 Inch 12A9138X01D 

10 Inch 12A9138X01D 

12 Inch 12A9139X01D 

23 Packing Follower (1 Piece) 

CG8M 

2 Inch 16A6079X01D 

3 & 4 Inch 26A6080X01D 

6 Inch 26A6077X01D 

8 & 10 Inch 26A6081X01D 

12 Inch 12A8925X01D 

24 Packing Flange 

ZNPL Steel (Special Alloy Flange) 

2 Inch 12B9440X01D 

3 & 4 Inch 12A8983X04D 

6 Inch 12A8822X04D 

8 & 10 Inch 12A8955X01D 

12 Inch 12A9830X01D 

25 Special Alloy Packing Follower 

S31600/S31603 Dual Grade (Special Alloy Follower) 

2 Inch 12A8906X03D 

3 & 4 Inch 12A8982X03D 

6 Inch 12A8821X01D 

8 & 10 Inch 12A8964X01D 

12 Inch 12A8925X01D 



P-570M0115A 

26





26 Packing Stud, 2 Required 

B7 

2 - 4 Inch 1E94413103D 

6 Inch 12A8835X01D 

8 Inch 1K2429X056D 

10 Inch 1K2429X056D 

12 Inch 12A8926X01D 

8M (for CG8M valve bodies) 

2 - 4 Inch 1E94413522D 

6 Inch 12A8835X02D 

8 & 10 Inch 1K24293522D 

12 Inch 12A8926X02D 

27 Packing Nut, 2 Required 

2H 

2 - 4 Inch 1E94402411D 

6 Inch 1A37532411D 

8 Inch 1A3772X066D 

10 & 12 Inch 1A3772X066D 

8M (for CG8M valve bodies) 

2 - 4 Inch 1E94403525D 

6 Inch 1A37533525D 

8 - 12 Inch 1A3772X023D 

28 Pipe Plug 

A105 Steel (For WCC Bodies) 

2 - 4 Inch DFVX000003D 

6 & 8 Inch 1A76752466D 

10 Inch 570X101X01D 

12 Inch 570X122X01D 

S31600/S31603 Dual Grade (For CF8M Bodies) 

2 - 4 Inch DFVX000004D 

6 & 8 Inch 1A76753507D 

10 Inch 570X101X02D 

12 Inch 570X122X02D 

A350 (For LCC Bodies) 

2 - 4 Inch DFVX000006D 

6 & 8 Inch 1A7675A350D 

10 Inch 570X101X03D 

12 Inch 570X122X03D 


29 Lock Washer, Zinc Plated 

2 - 6 Inch LWZ12 

8 - 12 Inch LWZ58 

30 Actuator Mounting Bolt 

Gr. 5 Pl Steel 

2 Inch (2 Required) H5CZ12.134 

3 Inch (4 Required) H5CZ12.200 

4 & 6 Inch (4 Required) H5CZ12.214 

8 - 12 Inch (4 Required) H5CZ58.212 

31 Actuator Mounting Nut 

Gr. 5 Pl Steel 

2 - 6 Inch NHCZ12 

8 - 12 Inch NHCZ58 

32 Flange Stud See Table 

33 Name Plate, Steel NAME11ROTAD 

34 NACE Tag, Steel NAME7NACEZD 



P-570M0115A 

27



Packing Repair Kits 

Live Loaded PTFE Packing 

Valve Size 

Shaft Diameter 

inches (mm) 

Kit Numbers 

2 Inch 5/8 (15.9) RRTYX00002D 

3 & 4 Inch 3/4 (19.1) RRTYX00003D 

6 Inch 1 (25.4) RRTYX00005D 

8 Inch 1-1/4 (31.8) RRTYX00006D 

10 Inch 1-1/4 (31.8) RRTYX00006D 

12 Inch 1-1/2 (38.1) RRTYX00007D 

Live Loaded Graphite Packing 

Valve Size 

Shaft Diameter 

inches (mm) 

Kit Numbers 

2 Inch 5/8 (15.9) 13B8816X03D 

3 & 4 Inch 3/4 (19.1) 13B8816X05D 

6 Inch 1 (25.4) 13B8816X09D 

8 Inch 1-1/4 (31.8) 13B8816X11D 

10 Inch 1-1/4 (31.8) 13B8816X11D 

12 Inch 1-1/2 (38.1) 13B8816X14D 

Kit Contents - PTFE 

Key Part Description Quantity 

22 Packing Set 1 

39 Anti-Extrusion Ring 2 

Kit Contents - Graphite 

Key Part Description Quantity 

22 Packing Set 1 

Note: Anti-Extrusion Rings (Key 39) are included with the Packing Set. 



P-570M0115A 

28



DRIVE SHAFT PIN 

The 2 inch model 570 uses a 1/4” diameter shaft pin (Key 15) to connect the drive shaft to the ball that is precisely fitted to 

easily insert into the ball/shaft by hand or with light tapping by a hammer and punch. New ball/shaft assemblies will have the 

pins inserted loose for easy removal prior to installing into the valve. Use a 1/8 pin punch to remove the pin. 

CAUTION 

Because the drive shaft pin hole is stepped, the pin can only be removed from one direction. Once the new Ball, 

Shaft and Pin is installed, the pin hole must be staked to prevent the pin from coming out during operation. 

Because the pin can only be inserted from one direction, staking the side that the pin is inserted from will prevent 

the pin from falling out. 

NOTE 

Deforming the edges of the hole without properly supporting the ball could result in damage. It is advisable to 

install the follower shaft into the valve and to carefully suppost the ball before staking the edge of the hole on the 

drive shaft to prevent damage from occuring to the ball / shaft assembly. See next page for Follower Shaft Pin 

assembly. 

NOTE 

The 2 inch 570 ball/shaft is sold only as an assembled 

matched set and must be replaced as an assembly. 

Figure 15 Use a pointed center 

punch to stake the edge of the hole 

as illustrated to the left. In the 

illustration to the left a shop rag is 

used to hold the ball in the proper 

position for staking. Be careful not 

to damage the machined surfaces of 

the ball or body. 

Staked Pin Photo and 

Follower Shaft Pin Instructions 

available on Page 29. 

NOTE 

The ball to shaft connection is set prior to assembly. For instructions on removal of the ball,shaft and key refer to 

Page 11. 



P-570M0115A 

29



Figure 16 Properly Staked 

Pin 

FOLLOWER SHAFT PIN 

The 2 inch 570 follower shaft (Key 13) also uses a straight pin to retain the follower shaft in position. Early designs used a 

non-stepped 3/16” diameter hole in the ball and a longer (1-1/4”) pin which is deformed to allow the pin to tighten in the hole. 

Later designs use stepped pin hole similar to the drive end. When using a longer (1-1/4” long) pin, you must assure the pin is 

deformed to allow the pin to tighten in the hole when installed. When using the shorter (1-1/16” long) pin, the pin hole must be 

staked, as illustrated below, to prevent the pin from coming out during use. Install the follower shaft. For non-stepped holes you 

will need to stake both sides. Stake the first side, then insert the pin, then stake the second side. For stepped holes insert the pin 

and stake the large side only. 

Figure 18 Follower Shaft 

Pin Designs 

Non-Stepped Pin Design 

with Deformation 

Figure 17 Pre-Staked Pin Hole 

Stepped Pin Design 



P-570M0115A 

30



3 THROUGHT 12 INCH BALL TO SHAFT ASSEMBLY INSTRUCTIONS 

These instructions outline the recommended procedure for assembly and setting of the ball to shaft connection. Use these 

instructions when setting or re-setting the ball to shaft connection or when replacing either the ball or shaft. The ball to shaft 

connection is set prior to assembly. For instructions on removal of the ball, shaft and key refer to Page 11. The connection design 

allows for adjustment of a shaft key using setscrews. As the set screws are adjusted clockwise the shaft key is forced against a 

taper which allows for easy field rotation play in the ball to shaft connection, and when set properly allows for easy field removal. 

1 2 3 

Using protective covers on the 

vise jaws to protect against 

damage to the shaft. Place the 

shaft in a vise with flat facing up 

as shown. 

Slide the ball onto the shaft 

and insert the flat key (flat 

down) into place. Note the side 

the shaft key goes in from as 

shown above. 

Rotate the ball and shaft as shown 

and tighten the setscrews until all 

rotational play is removed. Do not 

over tighten or removal wil be 

difficult. 

4 5 6 

7 

Using the pin punch remove the 

shaft key. 

12 o-clock 

Re-Grip the shaft firmly in the 

vise. Using a center punch stake 

the threads of the setscrews at 

12 o-clock, 3 o-clock, and 

9 o-clock positions. 

3 o-clock 






9 o-clock 






NOTE 

After staking check the setscrew to make sure it is 

tight. It should not move freely. If it moves re-stake it! 



P-570M0115A 

31


MODEL NUMBERING SYSTEM 

S A M P L E PA R T N U M B E R : 570- 2 - C L C - P N T 

MODEL 

570 570 571 571 573 573 

VALVE SIZE 

2 2 INCH 3 3 INCH 4 4 INCH 6 6 INCH 

8 8 INCH 10 10 INCH 12 12 INCH 

BALL MATERIAL 

- CG8M / CRPL (STANDARD) S CG8M / CoCr-A LEADING EDGE / CRPL 

N CG8M / CoCr-A LEADING EDGE B CG8M 

ASME RATING (SEE PAGE 2) 

A 150 B 300 / 600 C 150 / 300 / 600 E 300 

BODY MATERIAL 

L LCC W WCC C CG8M 

BALL SEAL MATERIAL 

C PTFE COMPOSITION H S21800 A ALLOY 6 

PAINT 

- DFPS-01 (STANDARD) 2 DFPS-02 (SEVERE SERVICE) 

3 DFPS-03 (HIGH TEMPERATURE) 

PACKING STYLE 

P SINGLE PTFE V-RING L LIVE LOADED PTFE 

V SINGLE PTFE V-RING (VACUUM) T LIVE LOADED GRAPHITE 

G SINGLE GRAPHITE 

SHAFT MATERIAL / STYLE 

N S20910 / SPLINED K S20910 / KEYED (VALVE SIZES 8” - 12” ONLY) 

P S20910 / SQUARE END (VALVE SIZES 2” - 6” ONLY) 

BEARINGS 

T S17400 / CPTFE A ALLOY 6 

F S44004 

570 

2 

- 

C 

L 

C 

- 

P 

N 

T 



P-570M0115A 

32

view instruction manual - dyna-flo control valves

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