Caleffi Z55P : 2-Way Valve, 1" G Thread Male Union, 7.5 Cv, 20 psi ΔP, (2) NA16265 Press Fittings, Normally Closed Spring Return Valve Actuator, 24V AC, On/Off Control Signal, (1) SPST 0.4A Auxiliary Switch, Terminal Block
The Caleffi Z55P is a 2-way motorized zone valve assembly featuring a 1" G thread male union valve body with (2) NA16265 press fittings and a Z151000 normally closed spring-return actuator with screw terminal connections. It provides precise on/off flow control in hydronic heating and cooling applications, automatically closing when power is removed for fail-safe performance.
UL873, cULus Listed, and CE certified, the Z55P meets UL 1995 section 18 requirements for air plenums and ducts. The actuator includes an integrated SPST auxiliary microswitch for feedback or interlock control. Constructed of brass with a stainless steel stem and EPDM seals, the Z55P ensures durability and reliability in demanding hydronic environments.
Key Features
- 2-way motorized zone valve assembly with normally closed actuator
- 1" G thread male union connection with (2) NA16265 press fittings
- Spring-return actuator automatically closes upon power loss
- Screw terminal block for simple and secure wiring
- Integrated SPST auxiliary microswitch (0.4A @ 24V AC)
- UL, cULus, and CE certified for air plenum and duct applications
Technical Specifications
- Valve Type: 2-Way Straight
- Connection Type: 1" G Thread Male Union with (2) NA16265 Press Fittings
- 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
