Verified specifications
| Type | Zone valve power head (actuator) |
|---|---|
| Voltage | 24 VAC, 60 Hz |
| Fits | Zone Sentry zone valves |
| Product line | Zone Sentry |
Zone valves: 24V valves that open and close hydronic heating zones. Match the pipe size, 2-way vs 3-way configuration, and wiring (2-wire, 3-wire, or 4-wire) to the existing valve — and confirm the control panel (ZVC series) can drive the replacement.
Not the 555-050RP: the 555-050RP was the power head for the older 570 Gold series — the ZA024Q4A2 is the Zone Sentry head. Confirm your valve series before quoting.
Confirming the right zone valve
Before we quote, compare these fields on your failed valve. If any of them differ, send us a photo and we'll match it exactly rather than guessing:
- Full model number — including the generation suffix (e.g. 570-2 vs. older 570)
- Pipe size and configuration — 2-way vs. 3-way, sweat vs. threaded
- Wiring — 2-wire, 3-wire, or 4-wire; 24V
- Zone valve control the valve is wired to (e.g. Taco ZVC series)
Other Taco models
- More Taco modelsBrowse every Taco model page we quote
- Zone Sentry familyThe full Zone Sentry valve line
Need a Taco ZA024Q4A2?
Send the model off your failed valve. We'll confirm the wiring and configuration match, and quote the ZA024Q4A2 with availability and lead time.
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