Wax Thermostatic Element LG013X

The LG013X Wax Thermostatic Element is a high-force thermostatic actuator engineered for applications requiring strong mechanical response in the 45°C to 60°C primary activation range. Built with Legom’s proprietary patented wax formula, the LG013X delivers consistent, repeatable stroke actuation across a rated lifespan of 100,000 cycles. It has passed European product certification by accredited institutions including ACS and WRAS.

With the highest maximum load rating in the Legom wax element range at 180N, the LG013X is designed for integration into valve assemblies requiring greater actuation force, such as larger thermostatic mixing valves, industrial flow control devices, and heavy-duty HVAC components. Constructed from copper with a spring rate of 5N/mm and a total stroke range of less than 6mm across 15°C to 90°C, it delivers precise and proportional actuation suited to demanding thermal management applications.


Key Benefits
  • Highest load capacity in the Legom range – Maximum load of 180N enables integration into heavier valve assemblies and applications where standard 140N elements are insufficient
  • Precise mid-high temperature activation – Primary stroke of 2.15 ± 0.25mm between 45°C and 60°C provides accurate actuation at hot water control temperatures used in thermostatic mixing and anti-scald applications
  • Wide total stroke range – Full stroke of less than 6mm across the 15°C to 90°C span enables proportional control across a broad operating temperature range
  • Patented wax formula – Proprietary Legom formulation delivers superior sensitivity and temperature-response accuracy versus standard wax elements
  • ACS and WRAS certified – Passed European experimental institution product certification, confirming suitability for potable water and HVAC applications in international markets
  • Rated for 100,000 cycles – Exceptional service life verified through rigorous lifecycle testing, ensuring reliable long-term performance in high-use installations
  • Copper construction – Corrosion-resistant material ensures long-term durability in wet and thermally cycled environments
  • OEM and ODM customization available – Temperature range, working stroke, and maximum load can be customized to suit specific product requirements

Technical Specifications
Parameter Specification
Model LG013X
Material Copper
Maximum Load 180N
Minimum Load 60N
Testing Load 75N
Spring Rate 5N/mm
Maximum Temperature 90°C
Stroke L = 19.7 ± 0.25mm at 45°C, 75N
Lifespan 100,000 cycles
Certification ACS, WRAS

Temperature vs. Stroke

Temperature (°C) Stroke (mm)
45°C ~ 60°C 2.15 ± 0.25
15°C ~ 90°C < 6

Stroke values measured during heating-up cycle. Cooling-down cycle may exhibit slight hysteresis typical of wax thermostatic elements.


Application & Use Cases
  • Thermostatic mixing valves (TMV) – Installed as the thermostatic actuator in larger hot water mixing valves where higher spring-back force requires an element rated beyond 140N
  • Anti-scald and hot water safety devices – Applied in commercial and institutional plumbing fixtures requiring precise temperature control at the 45°C to 60°C threshold to prevent scalding
  • Industrial HVAC flow control – Used in heavy-duty valve assemblies within industrial heating and cooling circuits where standard-load elements are insufficient for the application
  • Automotive engine cooling systems – Applied in engine thermostats and cooling circuit controls requiring precise actuation at mid-to-high temperature operating points
  • Sanitary and medical equipment – Integrated into thermostatic control assemblies for hospital fixtures, laboratory equipment, and hygiene-sensitive installations with defined hot water delivery limits
  • Shipping, military, and other industries – Suitable for demanding environments where high-force, self-acting temperature-responsive actuation is required without electrical dependency

Installation Notes
  • The LG013X must be installed in direct contact with the fluid whose temperature it is intended to sense, ensuring accurate and consistent thermostatic response at the 45°C to 60°C activation range
  • Ensure the element is fully immersed in the flow path within the host valve or assembly to prevent slow or inaccurate actuation caused by partial exposure to the medium
  • Do not expose the element to temperatures exceeding 90°C, as sustained exposure above the maximum rated temperature may permanently degrade the wax charge and reduce stroke accuracy
  • The LG013X has a maximum load of 180N. Verify that the host valve mechanism does not impose forces beyond this limit during full stroke operation
  • The host valve or actuator assembly must provide adequate spring-back force to reset the piston on cooling, as the wax element generates push force only during heating
  • Keep the element away from external heat sources not part of the intended sensing medium to avoid premature or incorrect actuation
  • For OEM integration, confirm three key parameters in writing before finalizing the order: temperature range, working stroke, and maximum load

Frequently Asked Questions
What makes the LG013X different from other wax thermostatic elements in the Legom range?

The LG013X has the highest maximum load rating in the Legom wax element range at 180N, compared to 140N on most other models. This makes it the appropriate choice when the valve assembly requires greater actuation force to overcome a stiffer return spring. Its activation range of 45°C to 60°C also positions it for hot water control and anti-scald applications at similar temperatures to the LG018X, but with a significantly higher force output for heavier valve mechanisms.

What certifications does the LG013X hold?

The LG013X has passed European experimental institution product certification under ACS and WRAS standards, confirming its suitability for use in drinking water systems and broader HVAC and plumbing applications in certified markets.

What is the expected service life of the LG013X?

The LG013X is rated for 100,000 actuation cycles, supporting long-term deployment in high-use commercial and industrial installations.

How does the two-row stroke table work?

The table shows two overlapping temperature ranges. The 45°C to 60°C row specifies the primary actuation stroke of 2.15 ± 0.25mm, which is the controlled working range the element is calibrated for. The 15°C to 90°C row shows the total stroke of less than 6mm across the full operating temperature span, reflecting the element’s proportional movement from cold to maximum temperature. Refer to the Temperature VS. Stroke curve in the Datasheet for the full graphical representation.

Can the LG013X be customized for different load or temperature requirements?

Yes. Legom offers full OEM and ODM customization. If your application requires a different activation temperature, working stroke, or load specification, the engineering team can develop a customized solution. Written confirmation of three key parameters is required before any customization project begins: temperature range, working stroke, and maximum load.

How do I select the right wax thermostatic element for my product?

The key selection criteria are the required activation temperature range, the working stroke needed to actuate your valve mechanism, and the maximum load the element must deliver. If you are unsure about any of these parameters, the Legom team can assist with selection or develop a custom element. Contact us via WhatsApp or email to begin the process.


OEM & ODM Customization

Legom supports full OEM and ODM services for the LG013X Wax Thermostatic Element. Our engineering team can customize the activation temperature range, working stroke, and maximum load to match your product requirements. Before any commitment, written confirmation of three key performance parameters is required: temperature range, working stroke, and maximum load. All customization projects are handled with strict confidentiality. Contact us via WhatsApp or info@legomsmart.com.


Datasheet

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.

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