Thermal Actuator 920062PL
The 920062PL Thermal Actuator is a Normally Closed electrothermal valve actuator engineered for underfloor heating manifolds and hydronic zone control, and it is available in both a standard and a fast-acting version. Manufactured by Legom with a durable glass-fiber reinforced PA66+30%GF housing, it converts a low-voltage control signal from a room thermostat into smooth, silent valve actuation, delivering an operating force of 100±10N and a stroke of ≥4mm while drawing only 2W of power.
Offered across a wide range of voltage versions and built to the EN 60730 standard for automatic electrical controls, the 920062PL fits standard manifold valves through an M30x1.5mm adapter and carries an IP54 protection rating for dust and splash resistance. The standard version operates in 3 to 5 minutes, while the fast-acting version reduces opening and closing time to just 60 to 90 seconds for systems that require a quicker response, all with the wear-free reliability that thermal actuators are valued for.
Key Benefits
- Normally Closed fail-safe action – The valve closes automatically when power is lost, stopping flow to the circuit, which is the preferred safe default for underfloor heating and zone control
- Standard and fast-acting versions – Choose 3 to 5 minute standard actuation, or the fast version at 60 to 90 seconds for systems that need a quicker valve response
- Wide voltage range – Available in 230V, 220V, 210V, 24V, and 12V to match mains-powered and low-voltage control systems from a single product family
- Low 2W power consumption – Minimal holding load keeps energy use down across multi-zone manifolds running many actuators in parallel
- Silent, wear-free actuation – The thermal operating principle uses no motor or solenoid, giving quiet operation and long service life with no mechanical switching wear
- IP54 protection grade – Dust and splash protection makes the unit suitable for the typical manifold cabinet and utility-room environment
- EN 60730 compliant – Meets the international standard for automatic electrical controls for household and similar use
- Standard M30x1.5mm adapter – Fits the majority of underfloor heating manifold valves and common zone valve bodies without custom hardware
- PA66+30%GF housing – Glass-fiber reinforced nylon resists heat and mechanical stress for reliable performance in warm manifold environments
- OEM and ODM customization available – Voltage, actuation speed, adapter thread, cable length, and housing can be adapted to specific product and market requirements
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 920062PL |
| Voltage | 230V / 220V / 210V / 24V / 12V (version dependent) |
| Control Direction | Normally Closed (NC) |
| Power Consumption | 2W |
| Working Temperature | -5°C to 60°C |
| Force | 100±10N |
| Stroke | ≥4mm |
| Protection Grade | IP54 |
| Standard | EN 60730 |
| Adapter | M30x1.5mm |
| Closing and Opening Time | 3 to 5 minutes (standard) / 60 to 90 seconds (fast version) |
| Housing Material | PA66+30%GF |
Specifications are typical values for the standard configuration. Voltage and actuation speed depend on the ordered version. Refer to the user manual for complete wiring details and dimensional drawings.
Application & Use Cases
- Underfloor heating manifolds – The primary application, where one actuator per loop opens and closes the manifold valve in response to each zone thermostat, enabling room-by-room temperature control
- Zone valve control – Drives manifold-mounted and two-port zone valves in multi-zone hydronic systems, switching flow to individual circuits on demand
- Fast-response zones – The 60 to 90 second fast version suits circuits where quicker valve reaction improves control, such as smaller loops or systems with tighter regulation requirements
- Radiator and HVAC valves – Actuates control valves in heating and cooling distribution assemblies that use an M30x1.5 valve interface
- Fan coil units – Controls water flow to fan coils in commercial HVAC installations for on/off zone regulation
- Thermostat-driven systems – Wired to room thermostats or heating controllers, translating the call-for-heat signal into valve movement with no external motor or linkage
Installation Notes
- Mount the actuator on a compatible valve using the M30x1.5mm adapter. Confirm the valve thread before installation
- Match the voltage version to the control system supply. Applying the wrong voltage can damage the actuator
- Because the actuator is Normally Closed, the valve remains shut until the actuator is energized. Verify this matches the intended control logic for the zone
- Confirm whether the standard or fast version was supplied, since the standard operates in 3 to 5 minutes and the fast version in 60 to 90 seconds. Match the actuation speed to the control strategy of the system
- Observe the IP54 rating. The actuator is protected against dust and splashing water but must not be submerged or installed in fully exposed outdoor locations
- Wire the unit in accordance with EN 60730 and local electrical regulations, and keep it within the -5°C to 60°C ambient working range
- Install the actuator in the recommended upright orientation on the valve to ensure reliable operation and correct ingress protection
- For OEM integration, confirm three key parameters in writing before finalizing the order: voltage, actuation speed, and adapter thread
Frequently Asked Questions
What does Normally Closed mean, and why is it used for underfloor heating?
A Normally Closed (NC) actuator keeps the valve closed when it is not powered and opens only when energized. If power is lost, flow to the circuit stops automatically. This fail-safe behavior is the preferred default for underfloor heating, since it prevents unwanted heating when the control system is off or has failed.
What is the difference between the standard and fast-acting versions?
The standard version opens and closes in 3 to 5 minutes, which is typical for thermal actuators and well suited to underfloor heating. The fast-acting version completes the same movement in 60 to 90 seconds, giving a quicker valve response for systems that benefit from faster switching. Both versions share the same force, stroke, and control logic, so choose based on the response speed your control strategy requires.
Why do thermal actuators generally operate slowly?
Thermal actuators operate by heating an internal expansion element rather than using a motor or solenoid, so movement is gradual by design. This gives silent, wear-free actuation. Where a faster reaction is needed, the 920062PL fast-acting version shortens the cycle to 60 to 90 seconds while keeping the same wear-free principle.
Which valves is the 920062PL compatible with?
The actuator connects through an M30x1.5mm adapter, which fits the majority of underfloor heating manifold valves and common zone valve bodies. Confirm that your valve uses the M30x1.5 thread before ordering.
Which voltage version should I order?
The 920062PL is available in 230V, 220V, 210V, 24V, and 12V. Select the version that matches the output of your thermostat, wiring center, or heating controller. If you are integrating the actuator into a larger system, our team can advise on the correct voltage for your setup.
Can the 920062PL be customized for OEM projects?
Yes. Legom offers full OEM and ODM services. Voltage, actuation speed, adapter thread, cable length, and housing details can be adapted to your product requirements. Written confirmation of three key parameters is required before a customization project begins: voltage, actuation speed, and adapter thread. Contact us via WhatsApp or email to start the process.
OEM & ODM Customization
Legom supports full OEM and ODM services for the 920062PL Thermal Actuator. Our engineering team can customize the voltage version, actuation speed, adapter thread, cable length, and housing to match your product requirements. Before any commitment, written confirmation of three key parameters is required: voltage, actuation speed, and adapter thread. All customization projects are handled with strict confidentiality. Contact us via WhatsApp or info@legomsmart.com.
User Manual
Product information last reviewed by the Legom Technical Team. For the most current specifications, refer to the official user manual or contact our sales team.
Custom OEM & ODM Solutions
Legom is a direct manufacturer offering end-to-end OEM and ODM services. With our in-house engineering and production capabilities, we work closely with distributors and system integrators to deliver fully customized solutions under strict NDA.
