Replacement Power Head for Taco Zone Sentry Zone Valves, Normally Open


Brand: Taco

Mfr Part#: ZB024Q4A1

UPC#: 687752882407

Availability: In Stock
Usually ships: within 1 business day
Qty Price
$72.95 / each
x4 $279.80 / box & Free Shipping
(4 x $69.95 / each)
  • Description
  • Reviews
  • FAQs

Taco ZA024Q4A1 is a Replacement Actuator Head for Zone Sentry Zone Valve, provides on-off control in both open and closed hot or chilled water hydronic systems.


The state of-the-art features of Actuator Head make the control truly universal and will prove to be both reliable and efficient. It is loaded with innovative technology and boasts a new Prostar Capacitor and a reliable high-torque, high-efficiency miniature motor. The quick Snap-in connects on the back of the valve ensuring a simple, secure and fast wiring hook-up. A green LED light shows full functionality of the valve.


  • Taco ZB024Q4A1 Zone Sentry;
  • Replacement Actuator Head;
  • Normally Open Position;
  • Uses up to 93% less energy than other commonly installed zone valves;
  • Multi function LED assists with troubleshooting;
  • The actuator mounts on the valve in either direction;
  • Replaces Taco EN024Q4A2 and AN024Q4A2 Actuator Heads.

Technical Specifications:

  • Maximum Operating Pressure: 300 psi;
  • Maximum Shutoff Pressure: 125 psi;
  • Fluid Temperature Range: 20 to 240°F (-7° to 115°C) @ 135°F (57°C) ambient;
  • Service: Closed systems, Optional open system configuration, Up to 50% Glycol;
  • Ball Rotation Speed: Full Open to Full Close / Full Close to Full Open (90° turn), 5 seconds (after charge time);
  • Seat Leakage: Drop-Tight Close-Off;
  • Electrical Rating: 24 VAC, 60 HZ, 0.48 Amps;
  • Do not exceed number of valves per transformer rating;
  • Example: Do not use more than 12 zone valves per 40VA transformer;
  • Power Consumption, Charging: 11.4 Watts, 0.48 Amps;
  • Power Consumption, Power On: 1.44 Watts, 0.06 Amps;
  • Heat Anticipator Setting: 0.5 Amps;
  • End Switch Rating: 1 Amp at 24 VAC.
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