Code No. LIT-1924180
Issued January 2, 2014
VA-720x Series Electric Valve Actuator
Description
The VA-720x Series Electric Actuator provides incremental or proportional control of valves with up to a 3/4 in. (19.05 mm) stroke in HVAC applications.
The VA-720x is a non-spring-return, synchronous, motor-driven electric actuator featuring a 180 lb (800 N) minimum seating force in a compact, easy-to-install package. It accepts incremental control from a three-wire 24 VAC control signal or a proportional DC control signal (up to 10 V maximum). The VA-7203 also contains a 2,000 ohm position feedback potentiometer.
The VA-720x Series can be easily field mounted to VBC Series Bronze Cage Trim Valves and factory or field mounted to VG7000 Series Bronze Control Valves.
Selection Chart
Code Description Number
VA-7200-1001 Three-Wire Incremental
VA-7203-1001 Three-Wire Incremental with Position Feedback
VA-7202-1001 Proportional: 0 to 10 VDC; 0 to 20 mA
Accessories
Code |
Description |
Number |
|
V-9999-HW1 |
Mounting Kit to Mount VA-715x or |
|
VA-720x Series Electric Actuators |
|
to Honeywell® V75011A, F, G, |
|
1/2 through 3 in. Single-Seated |
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and V5013F Three-Way Valves |
|
|
V-9999-BC1 |
Mounting Kit to Mount VA-715x or |
|
VA-720x Series Electric Actuators |
|
to Barber-Colman® 1/2 through |
|
1-1/4 in. VB-9xxx Valve Bodies |
|
|
VG7000-1016 |
Bonnet Adaptor for VA7200 Series |
|
Electric Actuator on 1 to 2 in. |
|
VG7000 Series Valves |
Cover Removal
4.5 in.
(114 mm)
Legs
7.76 in.
(197 mm)
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0.875 inch dia. (22 mm) Holes for 0.5 inch Conduit
4.18 in.
(106 mm)
Dimensions, in. (mm)
Refer to the VG7000 Series Bronze Control Valves Product Bulletin (LIT-977140) for important product application information.
Features
•compact unit provides 180 lb force (800 N) output covering a wide range of applications with just one actuator
•magnetic clutch provides constant output force for positive closeoff of valves and protects motor in stall conditions
•durable construction provides longer cycle life
•unique yoke design enables easy field mounting to valves, reducing installation and stroke adjustment time
•selectable direct and reverse action simplifies setup and installation
•built-in resistor for current control provides greater application flexibility
Applications
The VA-720x Series Actuator is used in conjunction with VG7000, VT, Flare, and Bronze Cage Trim Valves for hot-water and chilled-water systems. For VG7000 Series Valve factory mounted options, refer to the
VG7000 Series Brass Trim Globe Valves with VA720x Series Electric Actuators Catalog Page (LIT-1900085) and the VG7000 Series Stainless Steel Trim Globe Valves with VA-720x Series Electric Actuators Catalog Page (LIT-1900091).
VA-720x Electric Valve Actuator
For field mounting options, refer to the
VG7000 Series Bronze Globe Valves for Assembly in the Field Catalog Page (LIT-1924005).
Repair Information
If the VA-720x Series Electric Actuator fails to operate within its specifications, replace the unit. For a replacement actuator, contact the nearest Johnson Controls® representative.
Technical Specifications
|
VA-720x Series Electric Valve Actuator |
|
Power Requirements |
24 VAC (20 to 30 VAC), 50/60 Hz |
|
Input Signal |
Incremental: 24 VAC, 50/60 Hz |
|
|
Proportional: 0 to 10 VDC or 0 to 20 mA (Jumper Selectable) |
|
|
|
|
Input Signal |
Offset: Adjustable 0 to 8 VDC / 0 to 16 mA |
|
Adjustments |
Span: 2 to 10 VDC or 4 to 20 mA |
|
(Proportional) |
Action: Drive Up (DA) or Drive Down (DA) on Signal Increase |
|
|
Factory Setting: 0 to 10 VDC, Drive Up (DA), 3/4 in. (19 mm) Stroke |
|
Input Impedance |
Voltage: 100,000 Ohms |
|
(Proportional) |
Current: 500 Ohms |
|
Feedback Signal |
Proportional: 0 to 2,000 Ohms ± 25%, 1/4 W, Over 25/32 in. (20 mm) Stroke |
|
Mechanical Output |
180 lb Force (800 N) Minimum |
|
Stroke Range |
25/32 in. (20 mm) Maximum |
|
Nominal Stroke |
50 Hz: |
50 Seconds 1/2 in. (13 mm) Stroke |
Timing |
|
74 Seconds 3/4 in. (19 mm) Stroke |
|
60 Hz: |
42 Seconds 1/2 in. (13 mm) Stroke |
|
|
62 Seconds 3/4 in. (19 mm) Stroke |
Media Temperature |
280°F (138°C) Maximum |
|
Electrical Connection |
Screw Terminals: VA-7200: 24 to 14 AWG |
|
|
|
VA-7203: 24 to 16 AWG |
|
|
VA-7202: 24 to 16 AWG |
|
|
|
Mechanical |
For 1/4 - 28 UNF-2B Thread for Valve Stem Connection |
|
Connection |
|
|
Enclosure |
NEMA 2, IP42 |
|
Ambient Conditions |
Operating: 23 to 131°F (-5 to 55°C), 5 to 90% RH Noncondensing |
|
|
|
86°F (30°C) Maximum Dew Point |
|
Storage: -4 to 150°F (-20 to 65°C); 5 to 95% RH, 86°F (30°C) Maximum Dew Point |
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|
|
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Agency Listings |
UL 873 Listed, File E27734 CSA C22.2 No. 139 Certified, File LR850853 |
|
The performance specifications are nominal and conform to acceptable industry standards. For applications at conditions beyond these specifications, consult the local Johnson Controls office. Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2014 Johnson Controls, Inc. www.johnsoncontrols.com
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