Taco Geothermal Zone Valve 24V 3/4 Inch Sweat 2-Way - 556-G3

Taco Geothermal Zone Valve 24V 3/4 Inch Sweat 2-Way - 556-G3

The Taco 556-G3 Geothermal Zone Valve is engineered for high efficiency and reliability, facilitating precise flow control in HVAC systems. Ideal for geothermal applications, this 3/4 inch sweat valve operates on a 24V system and offers two-way directional control.

Features

This valve is perfect for professionals seeking robust and precise control in their HVAC installations.

• Efficient operation with 6.1Cv flow coefficient
• Designed for hassle-free installation in geothermal heating and cooling systems
• Durable construction ensures long-term performance

Specifications

What Our Experts Think

• Optimized for High-Head Systems: Designed specifically for open-loop geothermal applications, the 556-G3 effectively manages high-pressure conditions, ensuring reliable performance in demanding environments.

• Enhanced Heat Pump Control: Features a unique end switch that allows the valve to control the heat pump, enabling the introduction of cold water into the coil before the heat pump activates, thereby improving system efficiency. 

• Durable Construction: Built with a bronze body and a removable power head, this valve offers longevity and ease of maintenance, making it a dependable choice for geothermal systems. 

• User-Friendly Design: Equipped with a manual bypass lever and a twist-off head, the 556-G3 ensures straightforward installation and servicing, minimizing downtime during maintenance.

Q&A

Q: What is the Taco 556-G3 Geothermal Zone Valve?
A: The Taco 556-G3 is a 24V, 2-way geothermal zone valve designed for high-head, open-system zone control in hydronic heating systems. It features a 3/4" sweat connection and is equipped with a unique end switch that allows the valve to control the heat pump, enabling cold water to enter the coil before the heat pump starts. 

Q: What applications is the 556-G3 valve suitable for?
A: Ideal for geothermal hydronic heating systems, the 556-G3 valve is designed to provide efficient zoning and equipment isolation, allowing for individual room or area comfort control and energy savings.

Q: How does the end switch benefit the system?
A: The end switch enables the valve to control the heat pump, allowing cold water to enter the coil before the heat pump starts, ensuring optimal system performance and preventing potential damage to the heat pump. 

Q: Where can I purchase the 556-G3 valve?
A: The Taco 556-G3 valve is available through authorized HVAC distributors and online retailers.

Maintenance Tips

• Regular Cleaning: Periodically clean the valve body and actuator to remove dust and debris, ensuring smooth operation.

• Inspect for Leaks: Check all connections for signs of leaks. Tighten or replace seals as necessary to maintain system integrity.

• Test the End Switch: Verify that the end switch activates correctly to control the heat pump. This ensures proper sequencing of the heating system.

• Manual Override Function: Test the manual override lever to ensure it operates smoothly, allowing for manual control if needed.

• Check for Proper Operation: Listen for unusual noises during operation, which may indicate wear or malfunction.

• Lubrication: Apply lubricant to moving parts as recommended by the manufacturer to prevent wear and ensure smooth operation.

• Annual Inspection: Schedule a professional inspection annually to ensure all components are functioning correctly and to address any potential issues.