Dwyer Instruments SERIES 3ZV2 Catalog Page
Series
A
B
C
TURN KEY
TURN KEY
3ZV2
Three-Way Detachable Zone Valves
Floating or Modulating
A [in (mm)]
Size
4.53 (115)
1/2˝
4.53 (115)
3/4˝
4.61 (117)
1˝
5.16 (131)
1-1/4˝
3ZV2 Series Zone Valves are ideal for flow control in hot and cold water HVAC
systems. Zone valves are typically used in conjunction with a thermostat to control
room temperature. The 3ZV2 is electrically driven to open and or close via a
bidirectional motor. Units are available in 1/2˝, 3/4˝, 1˝, and 1-1/4˝ sizes with 24 or
120 VAC power supply. Easy to install, these units are direct replacements for
competitor units. Manual override lever is easily accessible externally. Consult
factory for 220 VAC power supply, optional auxiliary switches, and BSP or sweat
connections.
3ZV2 models come in floating or modulating input types. Floating units are controlled
directly from the thermostat and modulation units accept either a 4 to 20 mA or 0 to
10 VDC input. Modulating models include a motor time out feature that automatically
turns off the motor after the full stroke of the valve to increase motor life. Featured
in the 3ZV2 is a detachable actuator that is easily removable by a turn key allowing
the valve body to be installed without the actuator. Actuator housing is constructed
of fire resistant plastic.
Model
3ZV20212
3ZV20214
3ZV20224
3ZV20312
3ZV20314
3ZV20324
Cv
Size
3.8
3.8
3.8
5.4
5.4
5.4
Supply Voltage
1/2˝
120 VAC
1/2˝
24 VAC
1/2˝
24 VAC
3/4˝
120 VAC
3/4˝
24 VAC
3/4˝
24 VAC
Input
Floating
Floating
Modulating
Floating
Floating
Modulating
Model
3ZV20412
3ZV20414
3ZV20424
3ZV20512
3ZV20514
3ZV20524
Cv
6.7
6.7
6.7
9.8
9.8
9.8
Size
1˝
1˝
1˝
1-1/4˝
1-1/4˝
1-1/4˝
SPECIFICATIONS
Service: Compatible fluids.
Body: 3-way.
Line Size: 1/2˝ to 1-1/4˝.
End Connections: Female NPT
(optional BSP, sweat connections).
Pressure Limits: Max: 300 psi (20.7
bar); Close-off: 43 psi (2.96 bar).
Temperature Limits: Ambient: 32 to
104°F (0 to 40°C); Process: 37 to 201°F
(3 to 94°C).
Wetted Materials: Brass, SS, NBR.
Flow Characteristic: Quick opening.
Supply Voltage
120 VAC
24 VAC
24 VAC
120 VAC
24 VAC
24 VAC
USA: California Proposition 65
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Input
Floating
Floating
Modulating
Floating
Floating
Modulating
Input: Floating: 3-wire; Modulating: 0 to
10 VDC or 4 to 20 mA (24 VAC power
only).
Power Requirements: 120 VAC or 24
VAC, ±10%, 50/60 Hz (optional 220
VAC).
Power Consumption: Floating: 2.5 VA;
Modulating: 3.5 VA.
Electrical Connection: 18 AWG
jacketed, 9˝ (228 mm) long.
Cycle Time: Opening time: 50 to 65 s.
Enclosure Rating: General purpose.
Housing Material: PVC and
polycarbonate.
C [in (mm)]
2.64 (67)
2.64 (67)
2.64 (67)
2.64 (67)
B [in (mm)]
3.15 (80)
3.50 (89)
3.66 (93)
4.13 (105)
VALVES
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