Caleffi Z-one Normally Closed Actuator for Motorized Zone Valves

24VAC, PN- Z111000

Made In Italy

The Z-one actuator has a synchronous motor that winds the return spring and moves the valve paddle to the desired position. When power is removed the actuator spring returns the valve paddle. 24V actuators use a sealed reed switch for end switch, requiring no minimum current load.

Fits on Z2 and Z3 Series valve bodies with the push of a button.

A gear ratio of 21:1 in the actuator increases torque for high close-off pressure and increases closing time to reduce water hammer.

The actuator uses a special mechanism for gradual movement of the valve paddle which provides smooth and quiet constant operation. Power-on full stroke run time is 60 seconds with 6 second power-off return time eliminating the effects of water hammer.

When power is delivered to the actuator, the motor drives a series of gears against a pre-wound torsion spring until it reaches its fully stroked position. When power is dropped to the actuator, the torsion spring back drives the motor and gear train until the unit returns to its normal position. A lost motion mechanism disengages the motor from the gear train at the end of stroke to prevent the impact that would occur in directly coupled gears. This allows the Z-one actuator to have high spring force resulting in higher close-off pressures without compromising motor and gear longevity.

The valve can be installed either vertically or horizontally, with the actuator in any position, except upside down.

Valve not included

Specifications:

• Material: base and cover: polycarbonate
  • base plate: aluminum
• Motor: AC voltage: 24 V 50/60 Hz
• Power requirements: 5.0 W, 7 VA
• Power connections: Terminal screws with auxiliary switch
  • Wire lead length: 18” (45 cm)
• Auxiliary microswitch: 0.0 A min, 0.4 A max
• Ambient temperature range: 32 to 104°F (0 to 40°C)  
• Humidity: 95% non-condensing
• Full Stroke Time: On: <60 seconds
  • Off: 6 seconds
• Approvals: UL873, cUL Listed & CE, UL 1995 sec. 18 approved for air plenum and ducts.
• Environmental: Indoor only

Return Policy

We want you to be 100% satisfied with your purchase, if you are not, ship it back to us in the original packaging condition and we will refund your purhase less a 10% restocking fee, provided the equipment is received in good condition. Refund offer valid for 30 days from receipt of product.

Warranty - 5 Years (when installed with Z-one valve)

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For complete solar kits please allow 2-3 weeks delivery. These kits are shipped via our preferred freight forwarder company and where possible we will schedule residential tailgate delivery (curbside). Heaters and accessories are usually in stock unless indicated otherwise. We do have expedited shipping services available for an additional fee. Please call us if you need a rush order. Once your order has been shipped you will be contacted via email and a tracking number will be provided.