Thermal Actuator 920083PL
The 920083PL Thermal Actuator is a compact electrothermal valve actuator for hydronic underfloor heating and zone control, supplied in both Normally Closed and Normally Open versions to suit different control strategies. Housed in heat-resistant glass-fiber reinforced PA66+30%GF, it responds to a thermostat signal by moving the valve smoothly and silently, producing a force of 100±10N and a stroke of ≥4mm from a modest 2W draw.
The actuator is offered in 230V, 24V, and 12V versions and connects to manifold valves via M30x1.5mm or M28x1.5mm threads, giving it broad compatibility with common valve bodies. Rated IP54 for dust and splash resistance and built to the EN 60730 control standard, it opens and closes over 3 to 5 minutes, providing the gentle, motor-free actuation that keeps hydronic systems quiet and low-maintenance.
Key Benefits
- Choice of NC or NO control – Available as Normally Closed for fail-safe-closed zones or Normally Open where the valve should stay open when de-energized
- Fits M30 and M28 valves – Supplied with M30x1.5mm or M28x1.5mm threads to cover a wide range of manifold and zone valve interfaces
- Three voltage versions – 230V, 24V, and 12V options let a single actuator family serve mains and low-voltage control systems
- Only 2W consumed – A low holding load keeps energy use down even when many actuators run together on a large manifold
- Quiet, motor-free operation – Thermal actuation avoids the noise and wear of motorized or solenoid valves, extending service life
- IP54 rated – Protected against dust and splashing water for reliable use inside manifold cabinets and utility spaces
- EN 60730 compliant – Conforms to the international standard for automatic electrical controls in household and similar installations
- Rugged PA66+30%GF body – Glass-fiber reinforced nylon withstands the heat and mechanical stress found around manifolds
- OEM and ODM ready – Voltage, control direction, adapter thread, and cable can be tailored to specific product requirements
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 920083PL |
| Voltage | 230V / 24V / 12V (version dependent) |
| Control Direction | Normally Closed / Normally Open |
| Power Consumption | 2W |
| Working Temperature | -5°C to 60°C |
| Force | 100±10N |
| Stroke | ≥4mm |
| Protection Grade | IP54 |
| Standard | EN 60730 |
| Adapter | M30x1.5mm / M28x1.5mm |
| Closing and Opening Time | 3 to 5 minutes |
| Housing Material | PA66+30%GF |
Values are typical for the standard configuration. Voltage and control direction depend on the ordered version. See the product datasheet for full wiring and dimensional information.
Application & Use Cases
- Underfloor heating manifolds – Opens and closes each manifold loop in response to its zone thermostat, enabling independent temperature control room by room
- Multi-zone hydronic systems – Directs flow to individual circuits on demand, working alongside other actuators across the manifold
- Radiator and HVAC valves – Drives control valves in heating and cooling assemblies that present an M30x1.5 or M28x1.5 interface
- Fan coil units – Regulates water flow to fan coils in commercial HVAC for straightforward on/off zone control
- Thermostat-controlled circuits – Translates a room thermostat or controller signal into valve movement with no separate motor or linkage
Installation Notes
- Fit the actuator to a compatible valve using the appropriate M30x1.5mm or M28x1.5mm thread, checking the valve size beforehand
- Supply the correct voltage version (230V, 24V, or 12V). The wrong supply voltage can damage the unit
- Confirm the control direction (Normally Closed or Normally Open) suits the fail-safe behavior intended for the zone
- Expect a 3 to 5 minute travel time. Like all thermal actuators, movement is deliberate rather than instant
- Keep to the IP54 limits. The unit tolerates dust and splashing water but is not designed for immersion or open outdoor exposure
- Wire to EN 60730 and local regulations, and operate within the -5°C to 60°C range
- Mount the actuator upright on the valve as recommended to maintain reliable operation and ingress protection
- For OEM orders, confirm three parameters in writing first: voltage, control direction, and adapter thread
Frequently Asked Questions
Should I choose the Normally Closed or Normally Open version?
Choose Normally Closed (NC) if the valve should stay shut when there is no power, which is the usual safe choice for underfloor heating because flow stops during a power failure. Choose Normally Open (NO) if the valve should remain open when de-energized. The 920083PL is offered in both, so the decision comes down to the fail-safe behavior your control logic requires.
Is the 3 to 5 minute travel time normal?
Yes. A thermal actuator warms an internal element to move the valve, so it acts gradually rather than instantly. This slow, silent movement is well matched to underfloor heating, where fast switching offers no benefit and gentle flow changes improve comfort and valve longevity.
Will it fit my manifold valves?
The 920083PL comes with M30x1.5mm or M28x1.5mm threads, which match most underfloor heating manifold valves and common zone valve bodies. Check which thread your valve uses and order the matching version.
Which voltage do I need?
Pick the version, 230V, 24V, or 12V, that matches your thermostat, wiring center, or controller output. If you are unsure, our team can help you match the actuator to your system.
Where should the actuator be installed?
Its IP54 rating suits dry indoor locations such as manifold cabinets and utility rooms, protected from dust and splashing. Avoid submersion, high-pressure jets, and unsheltered outdoor positions.
Is OEM or ODM customization possible?
Yes. Legom provides full OEM and ODM services and can adapt voltage, control direction, adapter thread, and cable to your product. We ask for written confirmation of three parameters before starting: voltage, control direction, and adapter thread. Reach us via WhatsApp or email to begin.
OEM & ODM Customization
Legom provides full OEM and ODM services for the 920083PL Thermal Actuator. Voltage, control direction, adapter thread, cable length, and housing can all be adapted to your product requirements. Before a project begins, we require written confirmation of three key parameters: voltage, control direction, and adapter thread. Every customization project is treated with strict confidentiality. Contact us via WhatsApp or info@legomsmart.com.
Product information last reviewed by the Legom Technical Team. For the most current specifications, refer to the official datasheet 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.
