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Hydronics
Hydronic Controls & Sensors
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Caleffi (3)
Robertshaw® (3)
Tekmar® (4)
Uponor (3)
Number of Zones
2 (3)
3 (3)
4 (3)
5 (1)
6 (2)
Voltage Rating
115 VAC (3)
120 VAC (3)
2.2 to 3.6 VDC (1)
24 VAC (2)
Connection Type
Flare (1)
Threaded (2)
Suitable For Use With
2, 3 and 4-Wire Unlimited Zone Expansion Valves (2)
Pump and Boiler (3)
Radiant Heating System (2)
Height
2-3/4 in (2)
8-3/16 in (3)
9-1/4 in (3)
Width
10-11/16 in (3)
11 in (3)
7-3/4 in (2)
Depth
1 in (2)
2-3/8 in (3)
3 in (3)
Domestic/Import
Domestic (2)
Import (3)
Hydronic Zone Valve Controllers
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Caleffi Z-one ZSR106 Multi-Zone Pump Switching Relay, 6 Zones, 120 VAC
MFG #
ZSR106
Part #
135123
Brand
Caleffi
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Caleffi Z-one ZVR103 Multi-Zone Valve Switching Relay, 3 Zones, 120 VAC
MFG #
ZVR103
Part #
135124
Brand
Caleffi
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Caleffi Z-one ZVR104 Multi-Zone Valve Switching Relay, 4 Zones, 120 VAC
MFG #
ZVR104
Part #
135125
Brand
Caleffi
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Robertshaw VT2323 VT2 Two-Position Zone Valves, 2 Zones, Threaded Connection
MFG #
VT2323
Part #
5234
Brand
Robertshaw®
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Robertshaw VT2343 VT2 Two-Position Zone Valves, 2 Zones, Flare Connection
MFG #
VT2343
Part #
5233
Brand
Robertshaw®
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Robertshaw VT2427 VT2 Two-Position Zone Valves, 2 Zones, Threaded Connection
MFG #
VT2427
Part #
5236
Brand
Robertshaw®
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Tekmar 303V Zone Valve Control With Priority, 3 Zones, Import
MFG #
303V
Part #
22482
Brand
Tekmar®
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Tekmar 304V Zone Valve Control With Priority, 4 Zones, 115 VAC, Import
MFG #
304V
Part #
17837
Brand
Tekmar®
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Tekmar 305V Zone Valve Control With Priority, 5 Zones, 115 VAC, 7 VA Power Rating
MFG #
305V
Part #
154494
Brand
Tekmar®
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Caleffi Z-one ZSR106 Multi-Zone Pump Switching Relay, 6 Zones, 120 VAC
MFG #
ZSR106
Part #
135123
Brand
Caleffi
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Caleffi Z-one ZVR103 Multi-Zone Valve Switching Relay, 3 Zones, 120 VAC
MFG #
ZVR103
Part #
135124
Brand
Caleffi
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Caleffi Z-one ZVR104 Multi-Zone Valve Switching Relay, 4 Zones, 120 VAC
MFG #
ZVR104
Part #
135125
Brand
Caleffi
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Robertshaw VT2323 VT2 Two-Position Zone Valves, 2 Zones, Threaded Connection
MFG #
VT2323
Part #
5234
Brand
Robertshaw®
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Robertshaw VT2343 VT2 Two-Position Zone Valves, 2 Zones, Flare Connection
MFG #
VT2343
Part #
5233
Brand
Robertshaw®
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Robertshaw VT2427 VT2 Two-Position Zone Valves, 2 Zones, Threaded Connection
MFG #
VT2427
Part #
5236
Brand
Robertshaw®
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Tekmar 303V Zone Valve Control With Priority, 3 Zones, Import
MFG #
303V
Part #
22482
Brand
Tekmar®
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Tekmar 304V Zone Valve Control With Priority, 4 Zones, 115 VAC, Import
MFG #
304V
Part #
17837
Brand
Tekmar®
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Tekmar 305V Zone Valve Control With Priority, 5 Zones, 115 VAC, 7 VA Power Rating
MFG #
305V
Part #
154494
Brand
Tekmar®
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