Caleffi Z-one Single zone switching relay operated by low voltage
thermostats.

SIEMENS ½", 2-WAY, BALL VALVE, 24 VAC, FLOATING CONTROL, 05", 2W 0.4 CV, BALL VLV+GDE131.1P

Siemens 1/2" FIP, 2 or 3 Way Mixing,

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Caleffi Z-one 3-zone pump and boiler operating control for multiple zone hydronic heating systems.

• Heat-Timer SPC
• Single Point - Single Output
• 110 Volt Input
• Sensors Sold Separately
• SPC Brochure

• TSC - TWO - STAGE ON/OFF (Optional Lead Lag & Lead Stage rotation)
• Also can be field configured for Change Over Operation.
• Sensors Sold Separately
• TSC Brochure

• MCA-Elite: Modulates 4-20mA, 0-5V, 0-10V, 1-5V and 2-10V Actuators
• Sensors Sold Separately
• MC Series Brochure

• MCP-Elite: Modulates 0-135 Ohm Actuators
• Sensors Sold Separately
• MC Series Brochure

SIEMENS 1/2",  2-WAY, BALL VALVE, CHROME BRASS TRIM, 24 VAC, FLOATING CONTROL, 0.5" 2W 0.4CV BALL VLV+GDE131.1Q+ADPTR

Siemens 1/2" Red Brass FIP, 2 or 3 Way Mixing,

CLICK HERE FOR INFO ON B SERIES VALVE

Caleffi Z-one 4-zone pump and boiler operating control for multiple zone hydronic heating systems.

• MCF-Elite: Modulates Floating Actuators
• Sensors Sold Separately
• MC Series Brochure

SIEMENS 1/2",  2-WAY, BALL VALVE, CHROME BRASS TRIM, 24 VAC, 0-10 VDC MODULATING, 05" 2W 0.4 CV BALL VLV+GDE161.1P

Siemens 1/2", CV, 0.7, 2-way N/C, Steam
CLICK HERE FOR INFO ON H SERIES VALVE

Caleffi Z-one 6-zone pump and boiler operating control for multiple zone hydronic heating systems.

SIEMENS 1/2", 2-WAY, BALL VALVE, CHROME BRASS TRIM, 24 VAC, 0-10 VDC MODULATING, 0.5" 2W 0.4CV BALL VLV+GDE161.1Q+ADPTR

Siemens 1/2", CV, 0.7, 2-way N/C, Steam with Weld Flanges

CLICK HERE FOR INFO ON H SERIES VALVE

Caleffi Z-one 3-zone valve relay and boiler operating control for multiple zone hydronic heating systems.

SIEMENS 1/2",  2-WAY, BALL VALVE, CHROME BRASS TRIM, 24 VAC,ON/OFF, N/O, 0.5" 2W 0.4CV BALL     VLV+GQD121.1P-NO

Siemens 1/2", CV, 0.7, 2-way N/C, Steam with NPT Flanges

CLICK HERE FOR INFO ON H SERIES VALVE

Siemens 1/2", CV, 1.8, 2-3 Way MIXING 0-10 VDC
CLICK HERE FOR INFO ON U SERIES VALVE

Caleffi Z-one 4-zone valve relay and boiler operating control for multiple zone hydronic heating systems.

SIEMENS 1/2",  2-WAY, BALL VALVE, CHROME BRASS TRIM, 24 VAC,ON/OFF CONTROL, N/C, 0.5" 2W 0.4CV BALL VLV+GQD121.1P NC 24 VAC, 20LB-IN

Siemens 1/2", CV, 1.8, 2-3 Way MIXING, RED BRASS
CLICK HERE FOR INFO ON B SERIES VALVE

Caleffi Z-one 6-zone valve relay and boiler operating control for multiple zone hydronic heating systems.

SIEMENS 1/2",  2-WAY, BALL VALVE, CHROME BRASS TRIM, 24 VAC, FLOATING CONTROL, 0.5" 2W 0.4CV BALL VLV+GQD131.1P-NO, 24 VAC, 20LB-IN

SIEMENS 1/2",  2-WAY, BALL VALVE, CHROME BRASS TRIM, 24 VAC, FLOATING CONTROL, 0.5" 2W 0.4CV BALL VLV+GQD121.1P-NC 20 LB-IN

Siemens 1/2", CV, 1.8, 2-way N/C, Steam

CLICK HERE FOR INFO ON H SERIES VALVE

Caleffi expansion transformer for the ZVR Series multi-zone valve relay and boiler operating controls.

SIEMENS 1/2",  2-WAY, BALL VALVE, CHROME BRASS TRIM, 24 VAC,2-10-VDC MODULATING, 0.5" 2W 0.4CV BALL VLV+GQD151.1P NC, 20 LB-IN