Siemens Building Technology SFA71U/25G Actuator
The Siemens SFA71U/25G Actuator is a professional-grade 2-position zone valve actuator designed for reliable control in hydronic systems. Engineered for seamless integration with the Siemens 599 Series zone valves, this 24V normally closed actuator provides a robust 105 N force to ensure tight shut-off in high-demand HVAC applications. This spring return valve actuator facilitates a mechanical fail-safe in the event of power loss, making it a critical component for radiant floor heating, fan coil units, and VAV terminal reheat. With a 2.5 mm stroke and a rapid 10-second positioning time, it offers precise response for temperature regulation. The direct-coupled universal bonnet allows for tool-free installation, significantly reducing field labor time for contractors. The unit also includes a manual override feature and a visual position indicator to simplify commissioning and diagnostics.
Key Benefits- Simplified Installation: Features a direct-coupled design that snaps onto the valve bonnet without requiring specialized tools.
- Mechanical Fail-Safe: Built-in spring return mechanism automatically returns the valve to its normally closed position during power failures.
- High Compatibility: Specifically optimized for use with Siemens 599 Series 2-way and 3-way zone valves.
- Operational Efficiency: Low 9.8 VA power consumption allows for more actuators to be powered by a single Class 2 transformer.
- Maintenance Ready: Includes a manual override and clear visual indication for rapid system troubleshooting.
What is the primary application for the SFA71U/25G?
This actuator is typically used in commercial and residential hydronic systems to control hot or chilled water flow in fan coils, baseboards, and radiant manifolds.
Does this unit require a specific mounting orientation?
While it can be mounted in various positions, the vertical orientation is recommended to prevent moisture from entering the housing. It is NEMA 1 rated for indoor use.
Can I use this actuator with valves from other manufacturers?
The SFA series is engineered for the Siemens 599 Series universal bonnet. Using it with non-Siemens valves is not recommended as the 2.5 mm stroke and coupling may not align, potentially damaging the gears.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Siemens Building Technology SFA71U/25G Actuator
The Siemens SFA71U/25G Actuator is a professional-grade 2-position zone valve actuator designed for reliable control in hydronic systems. Engineered for seamless integration with the Siemens 599 Series zone valves, this 24V normally closed actuator provides a robust 105 N force to ensure tight shut-off in high-demand HVAC applications. This spring return valve actuator facilitates a mechanical fail-safe in the event of power loss, making it a critical component for radiant floor heating, fan coil units, and VAV terminal reheat. With a 2.5 mm stroke and a rapid 10-second positioning time, it offers precise response for temperature regulation. The direct-coupled universal bonnet allows for tool-free installation, significantly reducing field labor time for contractors. The unit also includes a manual override feature and a visual position indicator to simplify commissioning and diagnostics.
Key Benefits- Simplified Installation: Features a direct-coupled design that snaps onto the valve bonnet without requiring specialized tools.
- Mechanical Fail-Safe: Built-in spring return mechanism automatically returns the valve to its normally closed position during power failures.
- High Compatibility: Specifically optimized for use with Siemens 599 Series 2-way and 3-way zone valves.
- Operational Efficiency: Low 9.8 VA power consumption allows for more actuators to be powered by a single Class 2 transformer.
- Maintenance Ready: Includes a manual override and clear visual indication for rapid system troubleshooting.
What is the primary application for the SFA71U/25G?
This actuator is typically used in commercial and residential hydronic systems to control hot or chilled water flow in fan coils, baseboards, and radiant manifolds.
Does this unit require a specific mounting orientation?
While it can be mounted in various positions, the vertical orientation is recommended to prevent moisture from entering the housing. It is NEMA 1 rated for indoor use.
Can I use this actuator with valves from other manufacturers?
The SFA series is engineered for the Siemens 599 Series universal bonnet. Using it with non-Siemens valves is not recommended as the 2.5 mm stroke and coupling may not align, potentially damaging the gears.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
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Shipping & Returns
Description
The Siemens SFA71U/25G Actuator is a professional-grade 2-position zone valve actuator designed for reliable control in hydronic systems. Engineered for seamless integration with the Siemens 599 Series zone valves, this 24V normally closed actuator provides a robust 105 N force to ensure tight shut-off in high-demand HVAC applications. This spring return valve actuator facilitates a mechanical fail-safe in the event of power loss, making it a critical component for radiant floor heating, fan coil units, and VAV terminal reheat. With a 2.5 mm stroke and a rapid 10-second positioning time, it offers precise response for temperature regulation. The direct-coupled universal bonnet allows for tool-free installation, significantly reducing field labor time for contractors. The unit also includes a manual override feature and a visual position indicator to simplify commissioning and diagnostics.
Key Benefits- Simplified Installation: Features a direct-coupled design that snaps onto the valve bonnet without requiring specialized tools.
- Mechanical Fail-Safe: Built-in spring return mechanism automatically returns the valve to its normally closed position during power failures.
- High Compatibility: Specifically optimized for use with Siemens 599 Series 2-way and 3-way zone valves.
- Operational Efficiency: Low 9.8 VA power consumption allows for more actuators to be powered by a single Class 2 transformer.
- Maintenance Ready: Includes a manual override and clear visual indication for rapid system troubleshooting.
What is the primary application for the SFA71U/25G?
This actuator is typically used in commercial and residential hydronic systems to control hot or chilled water flow in fan coils, baseboards, and radiant manifolds.
Does this unit require a specific mounting orientation?
While it can be mounted in various positions, the vertical orientation is recommended to prevent moisture from entering the housing. It is NEMA 1 rated for indoor use.
Can I use this actuator with valves from other manufacturers?
The SFA series is engineered for the Siemens 599 Series universal bonnet. Using it with non-Siemens valves is not recommended as the 2.5 mm stroke and coupling may not align, potentially damaging the gears.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
