Caleffi Z55PL : 2-Way Valve, 1" G Thread Male Union, 7.5 Cv, 20 psi ΔP, (1) NA16265L + (1) NA16265 Press Fitting, Normally Closed Spring Return Valve Actuator, 24V AC, On/Off Control Signal, (1) SPST 0.4A Auxiliary Switch, Terminal Block
The Caleffi Z55PL is a 2-way motorized zone valve assembly featuring a 1" G thread male union valve body with (1) NA16265L and (1) NA16265 press fitting. It is paired with a Z151000 normally closed spring-return actuator equipped with screw terminal connections. Designed for precise on/off flow control, the actuator closes automatically when power is removed to ensure system safety and reliability.
UL873, cULus Listed, and CE certified, this model complies with UL 1995 section 18 standards for air plenums and ducts. The integrated SPST auxiliary microswitch allows circuit status feedback or interlock control. Its brass valve body, stainless steel stem, and EPDM seals make it ideal for durable operation in hydronic heating and cooling applications.
Key Features
- 2-way motorized zone valve assembly with normally closed actuator
- 1" G thread male union with (1) NA16265L + (1) NA16265 press fitting
- Spring-return actuator automatically closes on power loss
- Screw terminal block for reliable and easy wiring
- Integrated SPST auxiliary microswitch (0.4A @ 24V AC)
- UL, cULus, and CE certified for air plenum and duct use
Technical Specifications
- Valve Type: 2-Way Straight
- Connection Type: 1" G Thread Male Union with (1) NA16265L + (1) NA16265 Press Fitting
- Maximum Operating Pressure: 300 psi
- Maximum ΔP: 20 psi
- Cv Rating: 7.5 gpm
- Medium Temperature Range: 32–240 °F
- Electric Supply: 24V AC
- Power Consumption: 7 VA (at full capacity)
- Auxiliary Switch Rating: 0.4A @ 24V AC
- Maximum Glycol Concentration: 50%
- Medium: Water, glycol solutions, vapor (max 15 psi)
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 Inch
- Connection Type:
- G Thread Male Union
- CV Rating:
- 7.5
- GPM:
- 15 @ 4 psi
- Actuator Type:
- Non Fail-Safe
- Voltage:
- 24VAC
- Control Signal:
- On/Off
- Auxillary Switch:
- Yes
- NEMA 4X Enclosure:
- No
