SA905-T

UFH Auto Balancing Actuator ΔT Stepper Motor Control

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Eliminates UFH Hot and Cold Spots for Uniform Comfort

Dynamic Hydronic Balancing with ΔT Algorithm

Precise Flow Rate Adjusting via Stepper Motor Drive

Bluetooth App Diagnostics for Easy Maintenance

Ultra-Low Power Consumption (≤2W) and Efficiency

High Control Accuracy (±1.5℃) and Fast Response

Close-up of SA905-T actuator showing valve adjustment and flow mechanism

Saswell SA905-T Underfloor Heating Auto Balancing Actuator Front View

Saswell SA905-T Underfloor Heating Auto Balancing Actuator in Black, Front View

Home Product Residential Valves and Actuator Underfloor heating (UFH) actuator

Product Description

The Saswell SA905-T is a smart, stepper-motor-driven electric actuator designed specifically for underfloor heating systems. It integrates advanced ΔT automatic balancing control technology to precisely measure the supply and return water temperature difference and adjust the valve opening. This effectively eliminates hydronic imbalance issues, ensuring accurate flow in every circuit. Supporting mobile App remote diagnostics and parameter settings via Bluetooth, it is a core component for achieving efficient and comfortable underfloor heating operation.

Key Functions

Constant ΔT

Real-time monitoring of supply/return temperature difference (ΔT) to actively modulate valve position.
Precise Drive

Stepper motor achieves millisecond-level accurate valve positioning and rapid response.
App Access

Connects via Bluetooth to the "E-Control" App to view operational data and history.

Uniform Heat

Ensures constant water ΔT, eliminating floor hot/cold spots for superior comfort.
IP54 Rated

Features IP54 rating for protection against dust and water splash in humid environments.
Wide Versatility

Compatible with various non-UFH terminals, such as fan coil units and radiators.

Product Selector

Model No.	Nominal Force	Voltage	Stroke	Control Signa	Manual
SA905-T(220V)	80-130N	220VAC	4.5mm	Automatic hydronic balancing valve actuator	download
SA905-T(24V)	80-130N	24VAC	4.5mm	Automatic hydronic balancing valve actuator	download
SAS905-V(220V)	160N	220VAC	6mm	Modulating 0-10V	download
SAS905-V(24V)	160	24VAC	6mm	Modulating 0-10V	download
SAS905-S	80-130N	220VAC	4.5mm	ON/OFF	download

Product Parameters

Power supply: SA905-T(220V):100-240VAC; SA905-T(24V):24VAC

Power consumption: ≤2W

Stroke: 4.5mm

Force: 80N~130N

Ambient temperature: 0 ~ +50°C

Ambient humidity: 10%~90%,non-condensing

Protective housing: IP 54

Valve interface: M30x1.5mm

Temperature sensor: NTC 100K, clip for pipe outer diameter from 12~20mm

Fluid temperature:10~60°C(Flow temperature limitation is active when lever is closed )

Real-time Supply/Return Temperature Sensor: Feeds data to the ΔT algorithm for instant flow correction.

Dynamic ΔT Auto Balancing: Eliminate UFH Cold Spots

Unlike traditional static control, our system uses an integrated temperature sensor for real-time monitoring. The dynamic ΔT algorithm instantly adjusts flow to guarantee perfect hydraulic balance and control of each circuit, providing superior comfort and energy savings with ±1.5 ℃ control accuracy.

Achieve Superior Comfort & Energy Efficiency with ΔT Control

The SA905-T is engineered for applications demanding precision and efficiency. It serves as the ideal UFH retrofit energy-saving actuator for upgrading existing systems, ensuring precision manifold control in Villas/Large Apartments, and is essential for achieving uniform temperature control in Smart Home Temperature Control Systems.

Perfect for High-End Residential Projects and Villas. The actuator guarantees uniform floor temperature and low noise operation, creating a peaceful and energy-efficient living environment.

The LED indicator serves as the engineer’s first diagnostic tool. It provides immediate visual feedback on operation and errors, minimizing setup confusion and reducing troubleshooting time before connecting the App.

Instant On-Site Diagnostics: Multi-Status LED Indicator

Keep on（Green）: Normal working standby state

Flashing（Green）: In operation

Keep on（Red）: Sensor high temperature alarm

Flashing（Red）: Sensor malfunction

Keep on（Blue）: Bluetooth connection successful

High-performance Stepper Motor Drive: Ensures rapid response and precise flow rate adjustment.

Rapid Stepper Motor Response for Flow Rate Precision

Stepper motor replaces the slow wax core to enable highly precise flow rate adjusting capabilities. This rapid action minimizes temperature fluctuations and is critical for high-efficiency systems like heat pumps. Actuation time: 150 seconds to open, 30 seconds to close.

Smart App Control: Remote Diagnostics & Universal Compatibility

The "E-Control" app allows technicians to monitor real-time data, including ΔT (Cooling/Heating), and valve position. Access 24-hour temperature history for quick troubleshooting. Bluetooth-enabled parameter adjustment ensures universal compatibility with radiators, fan coil units, and other non-floor heating terminals. No Gateway or Network required.

Bluetooth App for UFH Actuator: 24-hour diagnostic history and non-floor heating terminal compatibility.

Partnership Support

As a professional manufacturer, we offer customized support for global UFH distributors, installers, and control system manufacturers. Our goal is to ensure smooth installation and operation, minimizing your after-sales service burden.

Technical Consulting

Expert teams provide detailed guidance on actuator installation, wiring, and Bluetooth App setup, including 24-hour support for hydronic balancing and commissioning troubleshooting.
Deep Customization

We support full actuator body branding (LOGO, color adjustment), as well as customized packaging and labeling services.
Global QA & Warranty

Rigorous Quality Control ensures product reliability and longevity. We establish a localized quick-response mechanism for global after-sales service to reduce operational costs.

FAQ

ΔT Stepper uses precise motor control and an algorithm (not wax) for dynamic balancing and rapid response (e.g., 150s), significantly eliminating temperature overshoot.

By continuously monitoring the supply/return temperature difference (ΔT) in real-time, it precisely regulates the flow to ensure uniform heat distribution and comfort across all UFH circuits.

The accuracy is high (±1.5 ℃); the power consumption is ultra-low (≤2W), which is crucial for overall system efficiency and reducing energy consumption.

Stepper motors offer a significantly longer lifespan and higher reliability than wax-based actuators, translating directly to lower long-term maintenance and replacement costs.

It substantially reduces commissioning time. The Auto Balancing and Bluetooth App Diagnostics minimize the need for manual, time-consuming trial-and-error flow balancing on site.

Yes, it features the industry-standard M30x1.5mm interface and is designed to be compatible with most major manifold brands for both new installations and UFH retrofit projects.

The App provides real-time supply/return temperatures, current ΔT, valve position, and historical operational data for quick fault isolation and precise system optimization.

Yes, its high precision and rapid response are ideally suited for optimizing the efficiency of heat pump systems and solving imbalance issues in retrofit projects.

It holds essential certifications (e.g., CE, RoHS), ensuring compliance for global distribution and installation projects in various markets.

Auto Balancing Actuator

UFH Actuator

Hydronic Balancing

Stepper Motor

ΔT Contro

Get In Touch

Contact our friendly Customer Service team for any Question,Concern, or Suggestion. We'd love to hear from you!

MENA Technical Support: +97155 6743682

8675561218391/2/3/4/5

info@saswell.com

UFH Auto Balancing Actuator ΔT Stepper Motor Control

Product Description

Product Selector

Product Parameters

FAQ

What is the core difference between the ΔT Stepper Actuator and traditional thermal actuators?

How does the SA905-T eliminate UFH hot and cold spots?

What are the control accuracy and power consumption metrics?

What is the expected lifespan and reliability of the stepper motor drive?

How much time does the SA905-T save on site commissioning?

Is the SA905-T compatible with my existing manifold?

What data can I view using the Bluetooth App?

Can this actuator be used with heat pump or retrofit UFH systems?

Which international certifications does the SA905-T possess?

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