The Caleffi Z111900 is a 24V normally closed actuator for Z-One zone valves, supplied with 18" wire leads.
It mounts on a Z-One valve body to open and close the zone on a thermostat call, and can be used to replace a failed actuator without draining the system. Normally closed means the valve stays closed until power is applied. The high-current auxiliary micro switch closes when the valve opens and can be used to start a circulator or boiler directly.
Before ordering, confirm your control voltage is 24V, that you need a normally closed actuator, and that the valve body is a Caleffi Z-One. The valve body is not included.
Specifications
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Brand: Caleffi
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Manufacturer Part #: Z111900
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Series: Z-One
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Type: Zone Valve Actuator (Replacement Head)
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Voltage: 24V
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Position: Normally Closed
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Auxiliary Switch: Yes, high-current micro switch
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Wiring: 18" wire leads
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UPC: 8016615575996
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Category: Zone Valve Replacement Heads
Documents
See also: zone valve replacement heads, all Caleffi products.