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
• 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 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

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

Siemens 171H-10300, 2-Way Control Valve

Siemens 172H-10300, 2-Way 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

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-NO, 20 LB-IN

SIEMENS 173A-10308 ¾", 2-WAY BALL VALVE, 24 VAC, FLOATING CONTROL, 0.75" 2W 6.3CV BALL VLV+GDE131.1Q+ADPTR

SIEMENS 173A-10309 ¾", 2-WAY BALL VALVE, 24 VAC, FLOATING CONTROL, 0.75" 2W 10 CV, BALL VLV+GDE131.1Q+ADPTR

SIEMENS 173A-10310 ¾", 2-WAY BALL VALVE, 24 VAC, FLOATING CONTROL, 0.75" 2W 16 CV, BALL VLV+GDE131.1Q+ADPTR