Brochure

Operating principle
The Z-one actuator has a synchronous motor that winds the return
spring and moves the valve paddle to the desired position. When
power is removed the actuator spring returns the valve paddle. The
Zone actuator is equipped with or without auxiliary switch.
Operation of normally closed valve
2-way 3-way
N
.C. without power Port “A” closed Port “A” closed
P
ort “B” open
P
ort “AB” open
N
.C. opened with power Port “A” opened Port “A” opened
P
ort “B” closed
Port “AB” open
N
.C. manually opened Port “A” open Port “A” opened
P
ort “B” opened
P
ort “AB” opened
2-way
(with the power off,
passage A is closed)
2
-way installed on the flow side
3-way
(with the power off,
passage A is closed)
AB
AB
AB
AB
LOAD
2-way installed on the return side
AB
LOAD
3-way installed on the flow side as a
diverting valve configuration
BA
LOAD
AB
3-way installed on the return side as a
mixing valve configeration
BA
LOAD
AB
BA
(
N
C
)
AB
AB
(
NC
)(
NO
)
Dimensions
Connections
2- way 1/2” SAE Flare
3- way 1/2” SAE Flare
A
2
11/32”
2
11/32”
B
4
11/16”
4
11/16”
C
15/16”
2
1/8”
D
3
1/2”
3
1/2”
Connections
1
/2” sweat
3/4” sweat
1
” sweat
1
1/4”
sweat
A
1
5
/16
”
1
3/8”
1
11/16”
1
13/16”
B
2
5
/8
”
2
3/4”
3
3/8”
3
5/8”
C
1
5/16
”
15/16”
15/16”
15/16”
D
1
5
/16
”
1
1/2”
1
9/16”
1
11/16”
E
3
1
/2
”
3
1/2”
3
11/16”
3
11/16”
B
A
* Terminal block only
Connections
1/2” NPT
3/4” NPT
1” NPT
Inverted flare
with adaptor (NA61241K)
A
1
7/16”
1
9/16”
1
13/16”
1
3/8”
1
3/8”
B
2
7/8”
3
1/16”
3
5/8”
2
3/4”
3
1/2”
C
15/16”
15/16”
15/16”
15/16”
15/16”
D
1
1/4”
1
1/4”
1
11/16”
1
1/4”
1
1/4”
E
3
1/2”
3
11/16”
3
11/16”
3
1/2”
3
1/2”
B
C
2-way
D
3-way
A
E
1 3/16”
2 3/8”
3 7/16”
4”
(4 17/32”)* * Terminal block only
C
2-way
D
3-way
E
3 7/16”
4”
(4 17/32”)*
1 3/16”
2 3/8”
B
A
C
D
3 7/16”
4”
1 3/16”
2 3/8”
C
3-way version