Selection Guide
Table Of Contents
- 1. Determine the manufacturer, part number, size, and stroke of the competitive valve body.
- 2. Determine the type of actuator required (e.g. pneumatic, electric two-position, electric floating, electric proportional), th...
- 3. Consult the appropriate section of this selection guide to determine the required AV-8xx kit number, compatible TAC actuator part number, and TAC actuator linkage (if needed).
- Competitive Globe Valve Adapters
- AV-800 Series Application Overview
- 1. TAC actuator and adapter dimensions may need to be checked to assure proper clearances are maintained.
- 2. The replacement actuator and adapter listed represent what TAC believes are an equivalent. Actuators do not necessarily have ...
- 3. TAC assumes no responsibility for guaranteeing the acceptability of any suggested replacements. The suggestions contained herein should only be used as a guide.
- 4. Consult the valve manufacturer if the system pressures or temperatures are being changed to assure proper performance.
- 5. Pneumatic actuator close-offs are based on 20 psig to the actuator diaphragm
- 6. All specified close-offs are nominal, and can vary based on the age of the valve, tightness of the stem packing, and variations in stem drag
14 © Copyright 2009 TAC. All rights reserved. F-27470-3
AV-816 — Actuator, Linkage and Close-Off Information for 1
1
/
4
” through 2” Three-Way
Siemens Valves (TAC Pneumatic and DuraDrive Spring Return Actuators)
Note: Do not use TAC Forta actuators with Siemens 591-66x three-way valve bodies (insufficient valve stroke).
Robertshaw Adapter Application Reference
Compatible Robertshaw Bronze Globe Valves
Recommended TAC Actuators
Refer to table on following page for complete actuator information. Only use the TAC actuators shown in this
selection guide for the specific valve, linkage, and actuator combination.
Siemens
Valve
Models
Actuator MK-2690 MK-4601 MK-4611 MK-4621 MK-6601 MK-6611 MK-6621 Mx51-710x
Additional
Linkage
AV-7400 AV-401 AV-430 Included
a
a
Linkage included in actuator.
Valve
Stroke
5/16”
b
b
Pneumatically-actuated valves with less than 1/2” stroke may require you to adjust the throttling range of the controller to obtain good proportional control.
5/16”
b
5/16”
b
5/16”
b
5/16”
b
5/16”
b
5/16”
b
5/16”
b
5/16”
b
5/16”
Spring
Range
3-7
psig
5-10
psig
8-13
psig
3-6
psig
5-10
psig
10-13
psig
3-8
psig
5-10
psig
8-13
psig
—
591-66xx
Three-Way
1-1/4”
Not
Recom-
mended
Not
Recom-
mended
15
c
c
20 psig supply air pressure.
90
c
60
c
40
c
60
c
120
c
200
c
60
1-1/2”
Not Recommended
40
c
80
c
180
c
35
2” 20
c
50
c
90
c
20
Compatible Robertshaw Two- and Three-Way Globe Valves AV-817
V61xx, V62xx, V64xx, V65xx, V67xx
1
/
2
” to 2” Two-Way
V63xx, V66xx
1
/
2
” to 2” Three-Way
V68xx
1
/
2
” to 2” Two-Way
V2566
1
/
2
” to 2” (Uni-Line™) Three-Way
a
V2567
1
/
2
” to 2” (Uni-Line) Two-Way
a
V2568
1
/
2
” to 2” (Uni-Line) Two-Way
a
a
Check valve stroke to determine which table below to consult for actuator, linkage, and close-off information
X