Models in this family
| Model / P/N | Rating |
|---|---|
| 570-2 | 1/2", 1–4.5 GPM, Cv 4.2 |
| 571-2 | 3/4", 4.5–6 GPM, Cv 6.1 |
| 572-2 | 1", 6–10 GPM, Cv 7.0 |
| 573-2 | 1-1/4", 10–16 GPM, Cv 7.2 |
Family specifications
| Voltage | 24 VAC, 60 Hz |
|---|---|
| Amps | 0.9A |
| Wiring | 3-wire with isolated end switch |
| Configuration | 2-way, sweat, normally closed |
| Body | Bronze |
| Max working pressure | 125 psi |
| Liquid temperature | 40–240°F |
| Features | Manual open lever |
The -2 suffix is the current 3-wire generation with an isolated end switch — the standard replacement for older 570-series valves.
Older line: the 555, 556, and 557 were the older 570-series valves (150 ft max differential). Currency is uncertain — send the number off your valve and we will match it.
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)
Which 570 Gold Series do you have?
Send the exact model or part number off your nameplate. We'll confirm the match and quote it with availability and lead time.
Quote this zone valve