3/4″ 2-Way Hydronic Zone Valve, 6.1 Cv, 24 VAC
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Taco 571-4 3/4″ Sweat 2-Way Zone Valve – 24V Heat Motor Actuated
The Taco 571-4 is a 3/4″ 2-way hydronic zone valve from the 570 Gold Series, designed for use in closed-loop heating systems. It is powered by a 24V heat motor actuator and provides reliable on/off control of water flow through individual zones in residential and light commercial hydronic applications.
This valve features a compact, serviceable design with a twist-off actuator head, allowing quick maintenance without disturbing piping. The normally closed valve opens automatically upon power application and closes when power is removed. It incorporates a replaceable power head and positive shut-off using a proven diaphragm-type seat construction.
Key Features
- Valve Size: 3/4″ sweat connections
- Control Voltage: 24 VAC, 60 Hz
- Flow Design: 2-way, straight-through
- Flow Coefficient (Cv): 6.1
- Normally Closed: Opens when energized
- Twist-Off Power Head: Allows for easy actuator replacement without draining the system
Technical Specifications
- Model: 571-4
- Max Operating Pressure: 300 PSI
- Max Water Temperature: 240°F
- Power Consumption: Approximately 7.7W
- Actuator Type: Heat motor with mechanical return
- Body Material: Bronze
Installation Requirements
Installation should be performed by qualified personnel. Ensure alignment with flow direction, and use proper soldering techniques when connecting sweat ends. Allow for access to the actuator in case of future service. Electrical connections must follow applicable low-voltage wiring codes and be completed with power off.
Contractor Notes
The Taco 571-4 is commonly used with multi-zone hydronic systems where isolated control of individual loops is required. Compatible with standard 24V thermostats and zone control relays. Actuator heads can be replaced independently of the valve body to minimize service time.
Fast, Reliable Delivery for Every Order
At Primes Distribution, we understand that timely delivery is just as important as product quality. That’s why we partner with trusted carriers to make sure your plumbing, HVAC, and heating supplies arrive safely and on time.
Shipping Methods
We offer multiple shipping options to fit your needs:
Standard Shipping: 3–7 business days across the continental U.S.
Expedited Shipping: 1–3 business days for urgent orders.
Local Pickup: Available at our warehouse by appointment.
Order Processing
All in-stock orders are processed within 1–2 business days. You’ll receive a confirmation email once your order is placed and a tracking number as soon as it ships.
Orders placed after 3 PM or on weekends will be processed the next business day.
Shipping Costs
Shipping costs are calculated at checkout based on weight, dimensions, and delivery location. Large or heavy items (like water heaters or HVAC units) may require special freight handling.
Delivery Areas
We currently deliver throughout the United States. For bulk or international shipments, please contact our support team for a custom quote.
Damaged or Missing Items
If your shipment arrives damaged or incomplete, report it within 48 hours of delivery. Our support team will quickly arrange a replacement or refund.
Need Help?
If you have questions about your order or need help tracking a shipment, reach out to our customer support team at:
📧 sales@primesdistribution.com
📞 786-937-7081
