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Actuator Features Fail Safe
Valve Only
End-of-line Service
2-Position Modulating
Actuator O.S. Number
MS8120A1007 MS4120A1001 MS7520A2007
NEMA 2 NEMA 2 NEMA 2
Power Supply Voltage 24 Vac 100-250 Vac 24 Vac
Frequency 60 Hz 60 Hz 50 / 60 Hz
Power (* tandem mount) 40 / 80* VA 60 / 120* VA 16 / 32* VA
Actuator Torque lb.-in. 175 / 350* 175 / 350* 175 / 350*
Control (0)2-10 Vdc •
4-20 mA (external 500 ohm resistor) •
Floating 24 Vac
2-Position • • •
Fail Safe Action
Configurable
Open / Closed
Configurable
Open / Closed
Configurable
Open / Closed
Normal Position
Configurable
Open / Closed
Configurable
Open / Closed
Configurable
Open / Closed
Aux Switch Built in
Add-On SW2-US SW2-US SW2-US
Feedback Built in 2-10 Vdc
Manual Override
Conduit Connection
• • •
Waterproof
Corrosion-resistant
Anti-condensate heater
Valve Size
(inches)
Cv @ 60° Cv @ 90°
Close-off
(psid)
Valve O.S. Number
3-Way Mixing / Diverting Globe Valve Porting
2" 61 144 175
VFF3FW1Y2C VFF3FW1Y2E VFF3FW1Y2D
Use a pair of
2-way valves
with standard
flanged Tee
2 1/2" 107 282 175
VFF3GW1Y2C VFF3GW1Y2E VFF3GW1Y2D
3" 154 461 175
VFF3HW1Y2C VFF3HW1Y2E VFF3HW1Y2D
4" 274 841
50
VFF3JV1Y2C VFF3JV1Y2E VFF3JV1Y2D
175
5" 428 1376
50
VFF3KV1Y2C* VFF3KV1Y2E* VFF3KV1Y2D*
175
6" 567 1850
50
175
8" 1081 3316
50
175
10" 1710 5430
50
175
12" 2563 8077
50
175
14" 3384 10538
50
150
16" 4483 13966
50
150
18" 5736 17214
50
150
20" 7144 22339
50
150
Valve Size
(inches)
Cv @ 60° Cv @ 90°
Close-off
(psid)
Valve O.S. Number
3-Way Mixing / Diverting Center Common Port
2" 61 144 175
VFF6FW1Y2C VFF6FW1Y2E VFF6FW1Y2D
Use a pair of
2-way valves
with standard
flanged Tee
2 1/2" 107 282 175
VFF6GW1Y2C VFF6GW1Y2E VFF6GW1Y2D
3" 154 461 175
VFF6HW1Y2C VFF6HW1Y2E VFF6HW1Y2D
4" 274 841
50
VFF6JV1Y2C VFF6JV1Y2E VFF6JV1Y2D
175
5" 428 1376
50
VFF6KV1Y2C* VFF6KV1Y2E* VFF6KV1Y2D*
175
6" 567 1850
50
175
8" 1081 3316
50
175
10" 1710 5430
50
175
12" 2563 8077
50
175
14" 3384 10538
50
150
16" 4483 13966
50
150
18" 5736 17214
50
150
20" 7144 22339
50
150
*Chilled water service only.
VALVE SELECTION
Resilient Seat Butterfly Valves
3-Way Electrically-Actuated Control