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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 4X NEMA 6
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
Lever Lever
Conduit Connection
• • •
Waterproof
Corrosion-resistant
Anti-condensate heater
Valve Size
(inches)
Cv @ 60° Cv @ 90°
Close-off
(psid)
Valve O.S. Number
2-Way Normally Closed (Field-Configurable Normally Open)
2" 61 144
175
VFF2FW1Y2C VFF2FW1Y2E VFF2FW1Y2D
250
VFF2FW2YLX VFF2FW2YGX
2 1/2" 107 282
175
VFF2GW1Y2C VFF2GW1Y2E VFF2GW1Y2D
250
VFF2GW2YLX VFF2GW2YGX
3" 154 461
175
VFF2HW1Y2C VFF2HW1Y2E VFF2HW1Y2D
250
VFF2HW2YLX VFF2HW2YGX
4" 274 841
50
VFF2JV1Y2C VFF2JV1Y2E VFF2JV1Y2D
175
250
VFF2JW2YLX VFF2JW2YGX
5" 428 1376
50
VFF2KV1Y2C* VFF2KV1Y2E* VFF2KV1Y2D*
175
250
VFF2KW2YLX VFF2KW2YGX
6" 567 1850
50
175
250
VFF2LW2YLX VFF2LW2YGX
8" 1081 3316
50
175
250
VFF2MW2YLX VFF2MW2YGX
10" 1710 5430
50
175
250
VFF2NW2YLX VFF2NW2YGX
12" 2563 8077
50
175
250
VFF2PW2YLX VFF2PW2YGX
14" 3384 10538
50
150
250
VFF2RW2YGX
16" 4483 13966
50
150
250
VFF2SW2YGX
18" 5736 17214
50
150
250
VFF2TW2YGX
20" 7144 22339
50
150
250
VFF2UW2YGX
*Chilled water service only.
VALVE SELECTION
Resilient Seat Butterfly Valves
2-Way Electrically-Actuated Control