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SKB/SKC Valve Actuator
24 Vac, Floating Control
Spring Return or Non-Spring Return
Flowrite Globe
Flowrite SKB/SKC Valve Actuator.
Description
Designed for use with Flowrite and other standard valves
with 3/4-inch and 1-1/2-inch (20 mm and 40 mm) strokes,
the Flowrite SKB/C Electronic Valve Actuator requires a
24 Vac supply to provide oating control of a valve.
Features
• Direct-coupled installation requires no special tools
or adjustments
• Visual and electronic stroke indication
• Die-cast aluminum housing
• Manual override
• Spring return or non-spring return
• Maintenance-free
• 1000 lb. (4400 N) nominal force
Applications
The Flowrite SKB/SKC Electronic Valve Actuator with
oating control is to be used with Flowrite and other
standard valves with a 3/4-inch and 1-1/2-inch (20 mm and
40 mm) strokes in liquid and steam service applications.
A-193
Valves
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SKB/SKC Specifications
A-194
Operating Voltage ................................................................ 24 Vac ±20%
Frequency ................................................................................... 50/60 Hz
Power Consumption
SKB82.50U............................................................................ 13 VA (8W)
SKB82.51U...........................................................................18 VA (11W)
SKC82.60U ......................................................................... 19 VA (16W)
SKC82.61U ......................................................................... 24 VA (18W)
Control Signal ...............................................................................Floating
Nominal Stroke
SKB .....................................................................................3/4" (20 mm)
SKC ..................................................................................1-1/2" (40 mm)
SKB/SKC Product Ordering
Actuator
Stroke Part No.
Spring Return
3/4" (20 mm) SKB82.51U 289
1-1/2" (40 mm) SKC82.61U 292
Non-Spring Return
3/4" (20 mm) SKB82.50U 290
1-1/2" (40 mm) SKC82.60U 293
Prex Code
Run Time with Control
Operation (full stroke) ................................ 120 sec. Pushing and Pulling
Spring Return Time (on power failure)
SKB82.51U...................................................................................10 sec.
SKC82.61U ..................................................................................18 sec.
Nominal Force
NC and 3-way Upper
Stroke ........................................................................................... 0%
Force ...................................................................... 610 lbs. (2684 N)
NO and 3-way By Pass
Stroke ....................................................................................... 100%
Force .................................................................... 1000 lbs. (4400 N)
Agency Approvals .................................... UL873, CSA C22.2 No. 24-93
Enclosure ............................................................. NEMA 1 (Interior Only)
Operating
Ambient Temperature ...................................... 5 to 130°F (-15 to 55°C)
Media Temperature ..................................... 14 to 300°F (-10 to 150°C)
Mounting Location ............................................... NEMA 1 (Interior Only)
Dimensions
Valves
Dimensions shown in inches (mm).
Height of Actuator H
14-3/4" (375 mm) 22-3/4" (578 mm) 7" (178 mm) Width x 8-15/16" (226 mm) Depth 25" (635 mm)
Table Note:
Service height and width are the recommended dimensions to allow access to the product.
1
Service Height H Width/Diameter of Actuator W
1
Service Width W
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A-257
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