CALZ45 MFG #: Z45
  • Brand: Caleffi
  • Amperage Rating: 0.4
  • Applicable Standard: CUL, IAPMO, UL (Canada and US)
  • Application: For Heating and Air-Conditioning Systems
  • Differential: 30
  • Electrical Connection: 18 in Wire Lead
  • Series: Z4
Z-one™ valves are used to automatically shut-off the flow or redirect hot and chilled water in hydronic systems, open systems, closed systems, low-pressure steam; and are UL listed for plenum installations. The motorized two-position, on/off, spring return Z1 series actuator has an end mounted push button for quick installation to the valve body. The actuator is equipped with or without an auxiliary micro-switch and models are either normally closed or normally open and with wire or terminal connections. The high temperature zone valve body Z2 series is 2-way straight through and the valve body Z3 series is 3-way diverting or mixing. The Z1 series actuator is easily attached by a push button lock and requires no tools. The Z-one valve provides 100% bubble-tight seat close-off leakage. The high temperature and high close-off performance characteristics of these zone valves, combined with the compact size, makes them suitable to fit inside baseboards or directly in fan coil units. Z-one valves are available with 1/2 to 1 inch press fittings, the Presscon™ copper tail-piece with union nut, making installation and maintenance fast, easy and efficient. Special slots in the EPDM O-ring allows fluid to leak during system testing if unpressed and provide a perfect leak proof seal when completely pressed. Some models are low-lead brass, for domestic hot water applications.
  • Features and More


  • Valve is a Truly Universal Zone Valve that can be Used in a Wide Range of Commercial and Residential Application
  • Can be Used in both Chilled or Hot Water and Low Pressure Steam Application


    Auxiliary Micro-Switch, Machined Brass Seat, Stainless Steel Stem, EPDM O-Ring, Actuator