Z-one valves are used to automatically shut-off the flow or redirect hot and chilled water in hydronic
heating and air conditioning systems, and is UL listed for plenum installations.
The motorized two position, on/off, spring return Z1 series actuator has an end mounted push button
for quick installation to valve body. The actuator is equipped with or without auxiliary switch and
configured Normally Closed or Normally Opened with wire or terminal connections.
The zero leakage high temperature zone valve body Z2 series is 2-way straight through and the valve
body Z3 series is 3-way diverting. The Z1 series actuator is easily attached by a push button lock and
without tools.
The high temperature and high close-off performance characteristics of these zone valves, combined
with the compact size, makes them suitable to fit inside baseboard or directly in fan coils units.
• US Patent 7,048,251; others pending
Quick Order Code Numbers: 24VAC Normally Closed Actuator and 2-way Valve Body Combinations
CodeDescriptionConnection
Z32Z121000 without auxiliary switch, 18 inch wire connection + Z200053 flare body1/2” SAE
Z32FZ121000 without auxiliary switch, 18 inch wire connection + Z200053 flare body + NA10124sweat 3/4"
Z40Z111000 with auxiliary switch, 18 inch wire connection + Z200043 flare body + NA61241Inverted
Z40FZ111000 with auxiliary switch, 18 inch wire connection + Z200043 flare body + two NA10006sweat 3/4”
Z42Z111000 with auxiliary switch, 18 inch wire connection + Z200053 flare body1/2” SAE
Z42FZ111000 with auxiliary switch, 18 inch wire connections + Z200053 flare body + NA10124sweat 3/4"
Z44Z111000 with auxiliary switch, 18 inch wire connection + Z200432 sweat body1/2”
Z45Z111000 with auxiliary switch, 18 inch wire connection + Z200537 sweat body3/4”
Z46Z111000 with auxiliary switch, 18 inch wire connection + Z200637 sweat body1”
Z47Z111000 with auxiliary switch, 18 inch wire connection + Z200737 sweat body1 1/4”
Z50Z151000 with auxiliary switch, screw terminal connection + Z200043 flare body + NA61241KInverted
Z50FZ151000 with auxiliary switch, screw terminal connection + Z200043 flare body + two NA10006 sweat3/4”
Z54Z151000 with auxiliary switch, screw terminal connection + Z200432 sweat body1/2”
Z55Z151000 with auxiliary switch, screw terminal connection + Z200537 sweat body3/4”
Z56Z151000 with auxiliary switch, screw terminal connection + Z200637 sweat body1”
Z57Z151000 with auxiliary switch, screw terminal connection + Z200737 sweat body1 1/4”
NA10005Inverted flare nut with attached copper sweat tail piece1/2”
NA10006Inverted flare nut with attached copper sweat tail piece3/4”
NA10007Inverted flare nut with attached copper sweat tail piece1”
NA61241Inverted flare extension adaptor to retrofit body into an old style asymmetrical zone valve openingInverted
NA10124SAE flare nut with attached copper sweat tail piece3/4”
Flow:1 to 7.5 Cv (0.9 to 115°C)
Medium:water and glycol, low pressure steam
Maximum percent of glycol:50%
Temperature range:32 to 240°F (0 to 115°C)
Max. static pressure:15 psi (1 bar) steam
300 psi (20 bar)
Max. closeoff ∆ pressure:20 to 75 psi (138 to 517 kPa)
Connection: - sweat:1/2”, 3/4” 1” & 1 1/4”
- NPT female:1/2”, 3/4” & 1”
- SAE flare:1/2"
- inverted flare:1/2", 3/4" & 1" sweat
fittings separate
Approvals:for lead-free brass Lead plumbing law compliance
(0.25% Max. weighted average lead content),
Lead plumbing law certified by IAPMO R&T
Actuator
Material: - base and cover:polycarbonate
- base plate:aluminum
Motor:- AC voltage:
24 V - 120 V - 208 V - 230 V - 277 V; 50/60 Hz
Power requirements:5.0 W, 7 VA
Power connections: - Terminal screws with auxiliary switch: 24 V only
- Wire lead length:18” (45 cm), 24 V only
6” (15 cm), 120, 208, 230, 277 V
Auxiliary switch:0.0 A min, 0.4 A max, 24 V (24V only)
0.25 A min, 5 A max, 250 V (Z111000 HCS)
0.25 A min, 5.0 A max, 250 V (120, 208, 230, 277 V actuators)
Ambient temperature range:32 to 104°F (0 to 40°C) 24, 120 V
32 to 170°F (0 to 77°C) 208, 230, 277 V
Humidity:95% non-condensing
Full Stroke Time: - On:<60 seconds
- Off:6 seconds
Approvals:UL873, cUL Listed & CE
UL 1995 sec. 18 approved for air plenums and ducts,
Normally Open Actuators must be powered down during off-season
AB
AB
AB
AB
LOAD
AB
LOAD
BA
LOAD
AB
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
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
.C. without powerPort “A” closedPort “A” closed
N
.C. opened with powerPort “A” openedPort “A” opened
N
.C. manually openedPort “A” openPort “A” opened
N
2-way
(with the power off,
passage A is closed)
2-way3-way
ort “B” open
P
ort “AB” open
P
ort “B” closed
P
Port “AB” open
ort “B” opened
P
ort “AB” opened
P
-way installed on the flow side
2
2-way installed on the return side
3-way
(with the power off,
3-way installed on the flow side as a
diverting valve configuration
passage A is closed)
3-way installed on the return side as a
mixing valve configeration
(psi) (kPa)
5.0 Cv
4.3 Kv
3/4”
1”
2.5 Cv
2.2 Kv
1/2”
3/4”
1.0 Cv
0.9 Kv
1/2”
500
200
1000
∆p (psi)
G (l/h) (
gpm
)
0.1
1
0
.
2
0
.
3
0
.5
2
3
5
1
0.5
10
2
5
2
0
1
1
0
2
3
5
2
0
3
0
0.4
4
0.1
1
0
.
2
0
.
3
0
.5
2
3
5
0.4
4
4000
2000
3.5 Cv
3.0 Kv
1/2”
3/4”
7.5 Cv
6.5 Kv
3/4”- 1”
-1 1/4”
360∞
BA
AB
(
NA
)(
NC
)
Construction details
To relay, boiler contacts
(TT) or DDC system
Thermostat
Motor
L1 (HOT)
L2
Black
Black
RedRed
Auxiliary Switch
To relay, boiler
contacts (TT)
or DDC system.
Thermostat
L1 (HOT)
L2
24 V
only
• Auxiliary switch
The actuator contains an auxiliary
microswitch to operate other devices. The
24 V actuators use a sealed reed switch,
patent pending, which has been produced
specifically for use with relays, boiler
contacts (TT) and DDC systems. It requires
no minimum current load. The 120 V - 277
V
actuators, and actuator model number
Z111000 HCS for applications requiring
greater than 400 mA, use a conventional
microswitch with silver contacts. The
auxiliary switch is activated when the valve
is 60% open or when the actuator is
manually opened.
• Manual opening (Normally closed
actuator only)
The valve can be opened manually by moving
the lever for opening it. When the power is
restored the manual control is automatically
overridden. The auxiliary switch in 24 V
actuators is tripped when the unit is put into
manual open position. This helps during start up to check if the wiring is
correct without firing the valve electrically with the thermostat.
• Easy push button
A simple push of the button makes it easy to remove it from the
body of the valve for maintenance or replacement operations.
Warning: the actuator can only be used with valve bodies Z2-Z3 series.
• Operation
The actuator is fitted with a special mechanism for gradual movement
of the valve paddle which provides smooth and quiet constant
operation. Power-on full stroke run time is 60 seconds with 6 second
power-off return time eliminating the effects of water hammer.
Installation
- The valve can be fitted either vertically or horizontally, with the
actuator in any position, except upside down.
-
If it is installed inside a encloser it is important to ensure that there
is adequate ventilation inside the encloser itself.
-
The three-way valve cannot be transformed into a two-way valve
and vice versa.
- When zone valves are installed, the direction of flow must be
observed as shown in the diagrams below.
- Two-way zone valves can be installed on both the flow and return
sides; the direction of flow indicated by the arrow on the body of
the valve must be observed.
- Three way zone valve can be fitted with NC actuator only (rotate
180° the valve body for NO application).
To use the above tables follow this example: Select actuator Z131000 from the top row combined with body Z200041 from left column to
create the combination Z431041.
SPECIFICATION SUMMARIES
The Z-one series two-position spring return with removable actuator zone valve. Z1 series actuator is NC or NO 24 V to
277 V 50/60 Hz 6.5 W 7 VA, with or without auxiliary switch {(24 V: 0.4A max, 24 V) (120-277 V: 5.0A, 250 V)}, Auxiliary
switch for 24 V actuator is a sealed reed switch requiring no minumum current load, includes leads or terminal block (24
V only); operating temperature from 32 ~ 104°F for 24 V and 120 V actuators; 32 ~ 170 deg F for 208 V, 230 V, 277 V
actuators. Z2 (2-way) series and Z3 (3-way) series are forged brass (2-way and 3-way 1/2" and 3/4" sweat valve bodies
pn Zn07433 and Zn07537 are lead-free certified by IAPMO R&T) valve body rated at 300 psi, temperature rated 32 ~
240°F. Valve stem stainless steel, seals EPDM, flows from 1.0 ~ 7.5 Cv connections size from 1/2” to 1 1/4”, sweat, NPT
female threads, SAE flare and inverted flare. Actuator approved for UL873, including air plenums and ducts rating per UL
1995 section 18.
We reserve the right to change our products and their relevant technical data, contained in this publication, at any time and without prior notice.