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

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

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

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 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

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

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

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

SIEMENS ¾", 2-WAY BALL VALVE, CHROME BRASS TRIM, 24 VAC, 0-10 VDC MODULATING CONTROL, 0.75" 2W 6.3CV BALL VLV+GDE161.1Q+ADPTR

SIEMENS ¾", 2-WAY BALL VALVE, 24 VAC, ON/OFF, N/C, 0.75" 2W 6.3CV BALL VLV+GQD121.1P NC

SIEMENS ¾", 2-WAY, BALL VALVE, CHROME BRASS TRIM, 24 VAC, ON/OFF CONTROL, N/O, 0.75" 2W 6.3CV BALL VLV+GQD121.1P

SIEMENS ¾", 2-WAY BALL VALVE, CHROME BRASS TRIM, 24 VAC, FLOATING CONTROL, 0.75" 2W, 6.3CV, BALL VLV+GQD131.1P  N/C, 20 LB/IN

SIEMENS ¾", 2-WAY BALL VALVE, CHROME BRASS TRIM, 24 VAC, FLOATING CONTROL, 0.75" 2W 6.3CV BALL VLV+GQD131.1P-NO, 24 VAC, 20 LB/IN

SIEMENS ¾", 2-WAY BALL VALVE, CHROME BRASS TRIM, 24 VAC, 2-10 VAC MODULATING CONTROL, 0.75" 2W 6.3CV BALL VLV+GQD151.1P-NC, 20 LB/IN

SIEMENS ¾", 2-WAY BALL VALVE, CHROME BRASS TRIM, 24 VAC, 2-10 VAC MODULATING CONTROL, 0.75" 2W 6.3CV BALL VLV+GQD151.1P-NO, 20 LB/IN

SIEMENS .1", 2-WAY, 10-CV, MOTORIZED BALL VALVE, WITH GDE131.1Q,  ACTUATOR & CONDUIT ADAPTER & 6' WIRES, NON SPRING RETURN, WATER GLYCOL, CLOSE OFF PSI 200, 600 WOG, 24 VAC, CONTROL INPUT, FLOATING.