Replacement Power Head for Taco Zone Sentry Valve, Normally Closed

Replacement Power Head for Taco Zone Sentry Valve, Normally Closed
Replacement Power Head for Taco Zone Sentry Valve, Normally Closed QR Code
Views: 7888 Model: ZA024Q4A1

MPN: ZA024Q4A1


Weight:0.50 lb

Dimensions (L x W x H ): 6.00 x 2.50 x 2.50

Usually ships: 1 business day(s)
Qty: Add to Cart


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The ZA024Q4A1 from Taco is a Replacement Power Head for Taco Zone Sentry Zone Valves, Normally Closed. It 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 ZA024Q4A1 Zone Sentry;
  • Replacement Actuator Head;
  • Normally Closed 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 240F, at 135F ambient;
  • Service: Closed systems;
  • Optional open system configuration;
  • Up to 50% Glycol;
  • Ball Rotation Speed: Full Open to Full Close (90 turn), 5 seconds (after charge time);
  • 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;


  • 1 year manufacturer's warranty from the date of purchase 


Product Specs
Electrical Rating:24 VAC, 60 HZ, 0.48 Amps;
End Switch Rating:1 Amp at 24 VAC
Fluid Temperature Range:20 to 240F, at 135F ambient
Full Close to Full Open (90 turn), 5 seconds (after charge time)Drop-Tight Close-Off
Heat Anticipator Setting:0.5 Amps
Maximum Operating Pressure:300 psi
Maximum Shutoff Pressure:125 psi
Power Consumption, Charging:11.4 Watts, 0.48 Amps
Power Consumption, Power On:1.44 Watts, 0.06 Amps;
Service:Closed systems
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