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Actuator O.S. Number
VU444A1098 VU444A1106 VU444A1155 VU843A1004 VU843A1087 VU844A1003 VU844A1060
Power Supply Voltage 227 Vac 230 Vac 120 Vac 24 Vac 24 Vac 24 Vac 24 Vac
Frequency 60 Hz 50 / 60 Hz 60 Hz 50 / 60 Hz 50 / 60 Hz 50 / 60 Hz 50 / 60 Hz
Power (60 Hz) 5 VA 5 VA 5 VA 0.32 A 0.32 A 0.32 A 0.32 A
Control 2-Position SPST • • • • • • •
Aux Switch SPST
Maximum Timing Seconds @ 60 Hz, Driving 15 15 15 15 15 15 15
Fail Safe 6 6 6 6 6 6 6
Fail Safe Action
2-way N.O.
3-way N.O./N.C.
2-way N.O.
3-way N.O./N.C.
2-way N.O.
3-way N.O./N.C.
N.C. N.C.
2-way N.O.
3-way N.O./N.C.
2-way N.O.
3-way N.O./N.C.
Electrical Connections Leadwire Length, in. 18 6 6 6 6 6 6
1/2 in. flexible conduit hole • • • • • • •
Manual Override (on power failure, auto reset) • • • • • • •
Nickel plated motors Condensing Atmosphere • • •
Valve Size
(inches)
Connection
Type
Flow Capacity
(Cv)
Valve
Action
Valve O.S.
Number
2-way Valves Close-off
2-Way
1/2"
f NPT 1.0 Cv
Normally Open
VU52N1027
50 50 50 50 50
Sweat 1.0 Cv
VU52S2002
50 50 50 50 50
f NPT 2.5 Cv
VU52N1035
30 30 30 30 30
Sweat 2.5 Cv
VU52S2010
30 30 30 30 30
f NPT 3.5 Cv
VU52N1019
20 20 20 20 20
Sweat 3.5 Cv
VU52S2028
20 20 20 20 20
3/4"
f NPT 3.5 Cv
VU52SN1076
20 20 20 20 20
Sweat 3.5 Cv
VU52S2036
20 20 20 20 20
Sweat 5.0 Cv
VU52S2044
15 15 15 15 15
f NPT 8.0 Cv
VU52N1001
10 10 10 10 10
Sweat 8.0 Cv
VU52S2051
10 10 10 10 10
1" f NPT 8.0 Cv
VU52N1068
10 10 10 10 10
1/2"
f NPT 1.0 Cv
Normally Closed
VU53N1041
50 50
Sweat 1.0 Cv
VU53S2018
50 50
f NPT 2.5 Cv
VU53N1058
30 30
Sweat 2.5 Cv
VU53S2026
30 30
Inverted Flare 3.5 Cv
VU53F1024
20 20
f NPT 3.5 Cv
VU53N1009
20 20
Sweat 3.5 Cv
VU53S2034
20 20
3/4"
f NPT 3.5 Cv
VU53N1033
20 20
Sweat 3.5 Cv
VU53S2042
20 20
f NPT 5.0 Cv
VU53N1066
15 15
Sweat 5.0 Cv
VU53S2075
15 15
f NPT 8.0 Cv
VU53N1017
10 10
Sweat 8.0 Cv
VU53S2059
10 10
1"
f NPT 8.0 Cv
VU53N1026
10 10
Sweat 8.0 Cv
VU53S2000
10 10
Valve Size
(inches)
Flow Capacity
(Cv)
Valve
Action
Connection
Type
Valve O.S.
Number
3-way Valves Close-off
3-Way
1/2"
Inverted Flare 4.0 Cv
Mixing
VU54F1022
20 20 20 20 20
f NPT 4.0 Cv
VU54N1007
20 20 20 20 20
Sweat 4.0 Cv
VU54S2008
10 10 10 10 10
3/4"
f NPT 4.0 Cv
VU54N1031
20 20 20 20 20
f NPT 5.0 Cv
VU54N1049
15 15 15 15 15
Sweat 5.0 Cv
VU54S2057
15 15 15 15 15
f NPT 7.0 Cv
VU54N1015
10 10 10 10 10
Sweat 7.0 Cv
VU54S2016
10 10 10 10 10
1"
f NPT 7.0 Cv
VU54N1023
10 10 10 10 10
Sweat 7.0 Cv
VU54S2024
10 10 10 10 10
ValVe Selection
Fan Coil and Zone Valves