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

• MCA-Elite: Modulates 4-20mA*, 0-5V, 0-10V, 1-5V and 2-10V Actuators
• Sensors Sold Separately
• Download Cutsheet
  * Need a power supply for 4-20 MA

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

SIEMENS 173A-10300 CONTROL 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 173A-10301 CONTROL VALVE

SIEMENS 173A-10302 CONTROL VALVE

SIEMENS 173A-10303 CONTROL VALVE

SIEMENS 173A-10304 CONTROL VALVE

SIEMENS 173A-10305 CONTROL VALVE

SIEMENS 173A-10306 CONTROL VALVE

SIEMENS 173A-10307 CONTROL VALVE

SIEMENS 173A-10311 CONTROL VALVE

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

SIEMENS MOTORIZED CONTROL VALVE

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

SIEMENS MOTORIZED CONTROL VALVE

SIEMENS MOTORIZED CONTROL VALVE

SIEMENS MOTORIZED CONTROL VALVE

SIEMENS MOTORIZED CONTROL VALVE

SIEMENS MOTORIZED CONTROL VALVE

SIEMENS MOTORIZED CONTROL VALVE

SIEMENS MOTORIZED CONTROL 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, 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

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