Caleffi Z44 : 2-Way Valve, 1/2" Sweat, 2.5 Cv, 50 psi ΔP, Normally Closed Spring Return Valve Actuator, 24V AC, On/Off Control Signal, (1) SPST 0.4A Auxiliary Switch, 18" Wires
The Caleffi Z44 is a 2-way motorized zone valve featuring a 1/2" sweat connection and a normally closed spring-return actuator. Designed for precision control in hydronic systems, it provides dependable on/off operation with 24V AC power. The integrated SPST auxiliary microswitch allows for control feedback or interlock, enhancing system flexibility and performance.
Built with a brass valve body, stainless steel stem, and EPDM rubber seals, the Z44 ensures long service life and reliable operation. It is UL873, cULus Listed, and CE certified, meeting UL 1995 section 18 requirements for air plenums and ducts.
Key Features
- 2-way on/off control valve with 1/2" sweat connections
- Normally Closed spring-return actuator (Z111000)
- 24V AC operation with On/Off control signal
- Integrated SPST auxiliary microswitch (0.4A @ 24V AC)
- Stainless steel stem and EPDM seals for durability
- Compliant with UL, CE, and cULus standards
Technical Specifications
- Valve Type: 2-Way Straight
- Connection Type: 1/2" Sweat
- Flow Coefficient (Cv): 2.5 gpm
- Maximum ΔP: 50 psi
- Maximum Operating Pressure: 300 psi
- Medium Temperature Range: 32–240 °F
- Voltage: 24V AC
- Power Consumption: 7 VA (at full capacity)
- Auxiliary Switch Rating: 24V AC: 0.0–0.4A
- Body Material: Brass
- Seals: EPDM Rubber
Datasheets
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Caleffi Z-One Motorized Zone Valve Installation and Commissioning Manual |
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Datasheets
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Caleffi Z-One Motorized Zone Valve Installation and Commissioning Manual |
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- Valve Pattern:
- 2-Way
- Valve Size:
- 1/2 Inch
- Connection Type:
- Sweat
- CV Rating:
- 2.5
- GPM:
- 5.0 @ 4 psi
- Actuator Type:
- Non Fail-Safe
- Voltage:
- 24VAC
- Control Signal:
- On/Off
- Auxillary Switch:
- Yes
- NEMA 4X Enclosure:
- No
