Caleffi Z-one™ Z46 2-Way Motorized Zone Valve With End Switch, 1 in, C, 300 psi, 7.5 Cv, 24 VAC

CALZ46 MFG #: Z46
  • Coefficient of Volume: 7.5 Cv
  • Differential: 20 psi
  • Electrical Connections: 18 in Wire
  • End Style: C
  • Manufacturer Name: Caleffi
  • Material: Forged Brass
  • Nominal Size: 1 in
  • Pressure Rating: 300 psi
  • Series: Z Series
  • Voltage Rating: 24 VAC
  • Water Temperature: 32 to 240 deg F
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 in 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


  • Extremely reliable design - Clutch-protected drive train, durable synchronous motor
  • Easy to install and service - Compact design with snap-on actuator with a convenient in-line push button, removable bottom cap allows for easy in-pipe service


  • Hot Water
  • Chilled Water and Low Pressure Steam


  • cUL Listed
  • CE Certified
  • UL 873
  • UL 1995 sec 18 Approved for Air Plenum and Ducts