Wax Thermostatic Element LG005X

• Widest temperature range in the Legom wax element lineup – Operates from 22°C to 100°C maximum, covering both domestic hot water and high-temperature industrial applications in a single element
• Three-stage stroke profile – Separate stroke specifications for 22°C~28°C, 22°C~37°C, and 22°C~100°C provide precise proportional actuation data at key points across the full operating range
• Higher spring rate of 6N/mm – Stiffer than the 5N/mm spring rate used in other Legom models, providing firmer piston return and more decisive valve closing action on cooling
• 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

Temperature vs. Stroke

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

• Thermostatic mixing valves (TMV) – Installed as the thermostatic actuator in hot water mixing valves where the element must remain responsive from ambient temperature through to high hot water delivery temperatures
• Solar thermal systems – Applied in thermostatic control assemblies for solar collector circuits where fluid temperatures can reach near-boiling levels, requiring an element rated to 100°C maximum
• Domestic hot water systems – Used in anti-scald valves and temperature-limiting devices in residential and commercial buildings where water temperature must be controlled across a wide range
• HVAC and air conditioning systems – Provides wide-range temperature-responsive mechanical actuation in water circuit control assemblies across both heating and cooling operating modes
• Automotive engine cooling systems – Applied in engine thermostats and cooling circuit controls requiring reliable actuation from cold-start ambient temperatures through full operating temperature
• Shipping, military, and other industries – Suitable for demanding environments where self-acting temperature-responsive actuation is required across a broad temperature span without electrical dependency

• The LG005X must be installed in direct contact with the fluid whose temperature it is intended to sense, ensuring accurate thermostatic response across the full 22°C to 100°C operating 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 100°C, as this is the maximum rated temperature for this model. Sustained exposure above this limit may permanently degrade the wax charge
• Avoid applying forces exceeding the maximum load of 140N to the piston during assembly or operation
• The LG005X has a spring rate of 6N/mm, stiffer than most other Legom models. Ensure the host valve assembly is designed to accommodate this higher return spring requirement
• 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

Legom supports full OEM and ODM services for the LG005X 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.