Caleffi Z54 Z-One 2-Way Zone Valve, Normally Closed, Terminal Block with End Switch, 1/2" Sweat, 2.5 Cv, 24V

The Caleffi Z54 is a Z-One 2-way motorized zone valve with a normally closed 24V actuator with screw terminal block and auxiliary end switch, assembled on a 1/2" sweat valve body.

Z-One zone valves open and close individual zones in hydronic heating systems on a call from a 24V thermostat or zone control. The end switch closes when the valve opens, so it can be used to enable the boiler or zone circulator. Field wiring lands on a screw terminal block on the actuator. This model is rated for a 2.5 Cv flow capacity, a 50 psi maximum close-off pressure and a maximum fluid temperature of 240°F.

Before ordering: confirm that the 1/2" sweat connection matches your piping, that the control circuit is 24V, and that the zone valve is meant to stay closed without power (normally closed). The pump differential across the closed valve should not exceed 50 psi.

Specifications

• Brand: Caleffi
• Manufacturer Part #: Z54
• Series: Z-One
• Type: 2-Way Zone Valve, Normally Closed
• Size: 1/2"
• Connection: Sweat
• Flow Capacity (Cv): 2.5
• Max Close-Off Pressure: 50 psi
• Max Temperature: 240°F
• Voltage: 24V
• End Switch: Yes
• Wiring: Screw terminal block
• UPC: 8016615964905
• Category: 2-Way Zone Valve

Documents

• Technical Data Sheet (PDF)
• Installation & Operation Manual (PDF)
• Submittal Sheet (PDF)
• Product Brochure (PDF)

See also: 2-way zone valve, all Caleffi products.