Page 1
Application
The AV-400 valve linkage kit is used to field assemble
MK-2690 pneumatic actuators to a variety of 1/2"
through 2" valve bodies.
Features
• Springs are provided for all control signal
ap
plications, including 3 to 7, 5 to 10, an
8 to 13 psig.
d
AV - 4 0 0
Pneumatic Actuator Valve Linkage Kit
General Instructions
• Kit fits both current and obsolete TAC
Ba
rber-Colman valve bodies.
Applicable Literature
• Environmental Controls Cross-Reference Guide,
F-23638
• Environmental Controls Reference Manual, F-21683
• Environmental Controls Application Manual,
F-21335
• Pneumatic Products Catalog F-27383
• MK-2690, Pneumatic Valve Actuator General
Instructions, F-13893
• Valve Selection Guide, F-26094
• EN-205 Water System Guidelines, F-26080
Printed in U.S.A. 6-10 Copyright 2010 Schneider Electric All Rights Reserved. F-25585-5
Page 2
INSTALLATION
C A U T I O N
Inspection
Requirements
Inspect the package for damage. If damaged, notify the appropriate carrier immediately. If
undamaged, open the package and inspect the device for obvious damage. Return any
damaged products.
• Tools (not provided):
Screwdriver appropriate for slotted spring compression screw
Two 3/8" wrenches
TOOL-20-1, Packing and linkage wrench
TOOL-19, Spring compression tool
• Linkage wrench (provided)
• Training:
Installer must be a qualified, experienced technician
• Avoid locations where excessive moisture, corrosive fumes, or vibration are present. Do not
insulate piping above the actuator mounting nut preventing proper drainage.
• Install all two-way valves so that they close against the flow. An arrow on the valve body or
a tag indicates the proper flow direction.
• Always install three-way mixing valves with two inlets and one outlet.
• Always install three-way diverting valves with one inlet and two outlets.
• Do not install the actuator below the center line of the valve. For steam applications mount
the actuators above the valve body at 45° from vertical.
Mounting
1. Actuators can be mounted in any upright position above the centerline of a valve body.
2. When selecting a location, allow sufficient room for accessories and for service of the product.
3. Maintain proper flow direction when installing all globe and radiator-type valves. Flow direction is indicated by an arrow on the valve body or by information on the attached tag.
2 Copyright 2010 Schneider Electric All Rights Reserved. F-25585-5
Page 3
ASSEMBLY PROCEDURE
C A U T I O N
C A U T I O N
Figure-1 Installation of Hexagon Coupler and Spring Compression Screw onto
Valve Stem.
Spring
Compresion
Screw
Hexagon Coupler
Valve Stem
1/16" Max.
(1.6 mm)
The AV-400 linkage kit contains parts for installation on both current 1/2" to 1-1/4" VB-7xxx
series valve bodies and on obsolete 1/2" to 1-1/4" VB-9xxx and older valve bodies.
AV-400 Valve Linkage Kit Used
with VB-7xxx Series Valves
The AV-400 linkage kit used with the MK-2690 actuator on VB-7xxx series valve bodies
require no stem height setting. Follow the assembly procedure for VB-7xxx series valves on
pages 6 through 8 for the selected valve body. Refer to Environmental Controls Valve
Selection Guide, F-26094, or Environmental Controls Catalog, F-25683, for valves
accommodating the MK-2690 actuator and AV-400 linkage kit.
• It is essential that the proper parts be used for the valve body on which the linkage is being
installed to ensure proper actuator operation and close off.
• Do not attempt to use the square stem extension with VB-7xxx valves. Parts or valves
may be damaged internally.
Linkage Kit Installation
The linkage is assembled onto the VB-7xxx valve body with stem in the up position.
1. Thread the hexagon coupler onto the valve stem all the way to the bottom of the stem thread, finger tight (Figure-1).
The hexagon coupler must reach to within 1/16" (1.6 mm) of the smooth section of the
stem to assure proper seating.
F-25585-5 Copyright 2010 Schneider Electric All Rights Reserved. 3
Page 4
2. Start the spring compression screw one turn or more into the hexagon coupler. Pull the
Figure-2 Assembly of AV-400 Linkage Kit onto VB-7xxx Series Valve.
Spring retainer
Spring
Hexagon coupler
Mounting nut
Packing nut
Spring
compression
screw
valve stem completely up (Figure-2).
3. Choose the correct spring for the desired actuator operating pressure range:
3 to 7 psig (21 to 48 kPa) Yellow Spring
5 to 10 psig (34 to 68 kPa) Black Spring
8 to 13 psig (55 to 89 kPa) Blue Spring
4. Slip the spring over the coupler and screw.
5. Place the retainer over the screw. Twist the retainer 45° to lock it in place on the spring compression screw.
6. Insert the linkage wrench (supplied with kit, also included on TOOL-20-1) through the spring coils to hold hexagon coupler.
7. Tighten the spring compression screw. To establish proper linkage height, run the
spring compression screw down until the screw end bottoms firmly on the stem top (Figure-3).
• On stem up closed valves (VB-722x) or three-way valves (VB-73xx), you will feel the
screw bottom.
4 Copyright 2010 Schneider Electric All Rights Reserved. F-25585-5
Page 5
• On stem up open valves (VB-721x), the stem and hexagon coupler will begin to turn.
Figure-3 Installation of Linkage Spring.
Spring Retainer
(Turn 45 degrees to
lock in place.)
Wrench
(Hold to prevent turning.)
Spring
Screwdriver
2-1/8" (54 mm)—VB-721X
2-1/16" (52.4 mm)—VB-722X & VB-73XX
Turn until Spring Compression
Screw bottoms firmly on
valve stem.
Figure-4 MK-2690 Actuator Mounted on VB-7xxx Valve.
8. Confirm stem height setting (Figure-3):
2-1/8" (54 mm) maximum after installation on up open valves (VB-721x)
2-1/16" (52 mm) maximum on stem up closed (VB-722x or three-way)
9. Center the spring on top and bottom to assure smooth actuator operation.
10. Install the actuator onto the valve by screwing the actuator base onto the mounting nut
Figure-5). The actuator may be rotated as desired to facilitate making the pneumatic
(
connection.
F-25585-5 Copyright 2010 Schneider Electric All Rights Reserved. 5
Page 6
AV-400 Linkage Kit Used with Current VB-121,
VB-324, and Obsolete VB-9xxx Series Valves
Refer to the following tables to select compatible valves for the MK-2690 actuator using the
AV-400 linkage kit that require stem height settings. Refer to
Ta bl e -2 and Ta bl e- 3 list the obsolete valve bodies used by the MK-2690 actuator and requiring the AV-400 linkage kit. Follow the assembly procedures on pages 8 and 9.
Table-1 Current Valve Selections for the MK-2690 Actuator Using the AV-400
Linkage.
Ta bl e -2 for current valves.
Valve
Assembly
Number
VK-1219-201
VK-1219-202
VK-1219-203
VK-3249-201
VK-3249-202
VK-3249-203
* Yellow Spring ** Black Spring *** Blue Spring
Normal
Position
Open
Stem Up
Spring
Range
Angle Straightway 3-Way 3-Way
3-7 *
5-10 **
8-13 ***
3-7 *
5-10 **
8-13 ***
Table-2 Obsolete VB-9xxx Valves, No Longer Available for the MK-2690 Actuator
Using the AV-400 Linkage.
Val ve
Assembly
Number
VK-1114-201
VK-1114-221
VK-9211-201
VK-9211-202
VK-9211-203
VK-9212-201
VK-9212-202
VK-9212-203
VK-9213-201
VK-9213-202
VK-9213-203
VK-9214-201
VK-9214-202
VK-9214-203
VK-9221-201
VK-9221-202
VK-9221-203
VK-9222-201
VK-9222-202
VK-9222-203
VK-9223-201
VK-9223-202
VK-9223-203
VK-9224-201
VK-9224-202
VK-9224-203
VK-9312-201
VK-9312-202
VK-9312-203
VK-9313-201
VK-9313-202
VK-9313-203
VK-9314-201
VK-9314-202
VK-9314-203
VK-9323-201
VK-9323-202
VK-9332-203
* Yellow Spring ** Black Spring *** Blue Spring
Normal
Posi tion
Open
Closed
Mixing Stem
Up Closes
A Port
Stem Up
Diverting
Stem Up
Sequencing
Spring
Range
3-7 *
8-13 ***
3-7 *
5-10 **
8-13 ***
3-7 *
5-10 **
8-13 ***
3-7 *
5-10 **
8-13 ***
3-7 *
5-10 **
8-13 ***
3-7 *
5-10 **
8-13 ***
3-7 *
5-10 **
8-13 ***
3-7 *
5-10 **
8-13 ***
3-7 *
5-10 **
8-13 ***
3-7 *
5-10 **
8-13 ***
3-7 *
5-10 **
8-13 ***
3-7 *
5-10 **
8-13 ***
5-10 **
8-13 ***
8-13 *** VB-9332-0-4-xx VB-9332-203-4-xx
Angle Straightway 3-Way 3-Way
VB-111-0-3-xx —
Valve Body Number
Standard, No Linkage
Valve Body Number
Assembly with
Linkage
— VB-121-0-4-xx — —
— — VB-324-0-5-04 —
Valve Body Number
Standard, No Linkage
VB-9211-0-4-xx
VB-9212-0-4-xx
VB-9213-0-4-xx
VB-9214-0-4-xx
VB-9221-0-4-Size
VB-9222-0-4-xx
—
VB-9223-0-4-Size
VB-9224-0-4-Size
—
— —
VB-9312-0-4-xx
VB-9313-0-4-xx
VB-9314-0-4-xx —
VB-9323-0-4-xx
Valve Body Number
Assembly with Linkage
VB-9312-201-4-xx
VB-9312-202-4-xx
VB-9312-203-4-xx
VB-9313-201-4-xx
VB-9313-202-4-xx
VB-9313-203-4-xx
VB-9323-202-4-xx
VB-9323-203-4-xx
Set Stem
Height
(Dim. “X”)
in. (mm)
1-11/16 (43)
Stem Down
2 (51)
Stem Up
Set Stem
Height
(Dim. “X”)
in. (mm)
1-21/32 (42)
Stem Down
2 (51)
Stem Up
1-3/4 (44)
Stem Down
6 Copyright 2010 Schneider Electric All Rights Reserved. F-25585-5
Page 7
C A U T I O N
Table-3 Valve Bodies Using AV-400 Linkage Kit Obsoleted before 1996.
Valve
Typ e
Radiator
Flared
2-Way
Inverted
Flared
2-Way
Globe
Screwed
N.C.
Globe
Screwed
3-Way
Flared
3-Way
Inverted
Flared
3-Way
Valve
Assembly
Number †
VK-1114-201-4
VK-1114-221-4 8-13 *** VB-111-221-3-x VB-111-221-4-x
VK-1214-201 3-7 *
VK-1214-221 8-13 *** VB-121-221-3-x VB-121-221-4-x
VK-1314-201
(N.O.)
VK-1314-202
(N.C.) VB-131-002-3-x VB-131-002-4-x VB-131-202-3-x VB-131-202-4-x
VK-1314-221
(N.O.)
VK-1314-222
(N.C.)
VK-1514-201
VK-1514-221 8-13 *** VB-151-221-1-x
VK-2454
Obsolete
VK-3144-201
VK-3144-211 5-10 ** VB-314-211-1-x
VK-3144-221 8-13 *** VB-314-221-1-x
VK-3244-201 3-7 *
VK-3244-211 5-10 ** VB-324-211-5-4
VK-3244-221 8-13 *** VB-324-221-5-4
VK-3544-201 3-7 *
VK-3544-211 5-10 ** VB-354-211-5-x
VK-3544-221 8-13 *** VB-354-221-5-x
Normal
Positio n
Open
Closed
Stem
Up
Spring
Range
3-7 *
3-7 *
8-13 ***
3-7 *
Replace with VK- 9223 Series —
3-7 *
Valve Body Number
Standard, No Linkage †
Angle Straightway Angle Straightway
— VB-111-0-4-x
VB-121-0-3-x VB-121-0-4-x
VB-131-001-3-x VB-131-001-4-x VB-131-201-3-x VB-131-201-4-x
VB-131-001-3-x VB-131-001-4-x VB-131-221-3-x VB-131-221-4-x
VB-131-002-3-x VB-131-002-4-x VB-131-222-3-x VB-131-222-4-x
— VB-151-0-1-x
VB-314-0-1-x
VB-324-0-5-4
VB-354-0-5-x
Valve Body Number
Assembly with Linkage †
VB-111-201-3-x VB-111-201-4-x
VB-121-201-3-x VB-121-201-4-x
VB-151-201-1-x
—
VB-314-201-1-x
VB-324-201-5-4
VB-354-201-5-x
Set Stem
Height
(Dim. “X”)
in. (mm)
1-11/16 (43)
Stem Down
2 (51)
Stem Up
1-11/16 (43)
Stem Down
2 (51)
Stem Up
1-31/32 (50)
Stem Up
2 (51)
Stem Up
* Yellow Spring ** Black Spring *** Blue Spring
†
No longer available. See the Maintenance Parts Catalog, F-26033 for available maintenance and repair parts.
• It is essential that the proper parts be used for the valve body on which the linkage is being
installed to ensure proper actuator operation and close off.
• Do not attempt to use the hexagon coupler with VB-121, VB-324, or VB-9xxx valves.
Stroke or close off may be affected.
F-25585-5 Copyright 2010 Schneider Electric All Rights Reserved. 7
Page 8
Linkage Kit Installation
N O T E
A
A
B
Combination Square
Stem Extension
and Locknut
Mounting
Nut
Spring
Packing
Nut
Spring
Retainer
Boss on Stem
Extension
Figure-5 Assembly of AV-400 Linkage Kit onto VB-9xxx Series Valve.
Top Surface of
Packing Nut
Top Surface of
Stem Extension
Square Stem
Extension
Locknut
Boss on stem extension
Packing Nut
X
Valve
Figure-6 Stem Extension Height Adjustment.
Refer to Table-2 for current VB-121 and VB-324 valves to maintain the proper stem height
during assembly. Refer to Ta b l e- 2 for obsolete VB-9xxx valves to maintain the proper
stem height during assembly.
1. Thread the square stem extension several turns onto the valve stem (Figure-5).
2. Position the valve stem, stem up or stem down, as noted in Tab le - 2 .
3. Adjust the height of the stem extension to the “X” dimension shown in Ta bl e -2 , Ta bl e - 2 , or Ta bl e - 3 for the appropriate valve body. The “X” dimension is from the top of the stem extension to the top of the valve packing nut (Figure-6).
8 Copyright 2010 Schneider Electric All Rights Reserved. F-25585-5
Page 9
4. Using one 3/8" wrench on the square stem extension and one on the locknut, hold the
Tool-19 or 1/8" (3 mm) Dia. Rod
CW
Move Spring Up
to Lock Retainer
in Place
CCW
Move Spring Down
to Install or Remove
Retainer
Figure-7 Installation of Linkage Spring.
Figure-8 MK-2690 Actuator Mounted on Valve.
wrench stationary at the stem extension while turning the wrench at the locknut clockwise. The locknut should separate from the stem extension. Next, while still holding the
wrench stationary at the stem extension, turn the wrench at the locknut counterclock
-
wise to jam the locknut against the stem extension, securing it in position.
5. Select the correct spring from the linkage kit (Ta b le - 2 ).
6. Position the spring over the stem extension.
7. Insert Tool-19 or a 1/8" (3 mm) diameter rod through the spring coil and the hole in the stem extension (Figure-7).
8. Hold the spring to prevent it from turning. “Walk” the tool up the spring coil by turning it
9. Install the spring retainer (Figure-5) onto the stem extension and turn the retainer 45°
10. Turn the tool clockwise, down the spring coil, to release the spring tension. Remove the
11. Install the actuator onto the valve by screwing the actuator base onto the mounting nut
counterclockwise until the boss on the stem extension (Figure-5) projects above the top
coil of the spring. Pushing down on the tool reduces torque required to turn the stem
and plug into the seat.
to lock it in place.
tool from the assembly.
(Figure-8). The actuator may be rotated as desired to facilitate making the pneumatic
connection.
F-25585-5 Copyright 2010 Schneider Electric All Rights Reserved. 9
Page 10
MAINTENANCE
1
2
3
Figure-9 AV-400 Pneumatic Actuator Valve Linkage Kit.
4
5
FIELD REPAIR
The actuator linkage requires no maintenance.
Regular maintenance of the total system is recommended to assure sustained, optimum
performance. Hard water leaves abrasive deposits and reduces component life. To maximize
valve life consult EN-205, Water System Guidelines, F-26080.
Individual parts of the actuator linkage are not repairable. Replace an inoperative actuator
linkage with a functional unit, or replace individual parts as necessary (Table-4 and
Figure-9).
Table-4 AV-400 Replacement Parts.
Item
(See Figure-5)
1 YBA-648 Stem Extension (square)
2
3 YBA-559 Spring Retainer
4
5 NYBA-82 Linkage Wrench
Part No. Description
PNV-144-043 3-7 psi Spring (Yellow)
PNV-145-045 5-10 psi Spring (Black)
PNV-145-048 8-13 psi Spring (Blue)
NYBA-80 Stem Coupler (hexagon)
NYBA-78 Spring Compression Screw
10 Copyright 2010 Schneider Electric All Rights Reserved. F-25585-5
Page 11
F-25585-5 Copyright 2010 Schneider Electric All Rights Reserved. 11
Page 12
On October 1st, 2009, TAC became the Buildings business of its parent company Schneider Electric. This document reflects the visual identity of Schneider Electric,
however there remains references to TAC as a corporate brand in the body copy. As each document is updated, the body copy will be changed to reflect appropriate
corporate brand changes.
Copyright 2010, Schneider Electric
All brand names, trademarks and registered
trademarks are the property of their respective
owners. Information contained within this
document is subject to change without notice.
F-25585-5
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